mirror of https://github.com/minio/minio.git
2830 lines
74 KiB
Go
2830 lines
74 KiB
Go
// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package cmd
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import (
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"bytes"
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"context"
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"crypto/rand"
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"errors"
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"fmt"
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"io"
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"net/url"
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"os"
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pathutil "path"
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"path/filepath"
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"runtime"
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"strings"
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"sync"
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"sync/atomic"
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"syscall"
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"time"
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"github.com/dustin/go-humanize"
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"github.com/google/uuid"
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jsoniter "github.com/json-iterator/go"
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"github.com/klauspost/filepathx"
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"github.com/minio/madmin-go/v2"
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"github.com/minio/minio/internal/bucket/lifecycle"
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"github.com/minio/minio/internal/disk"
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xioutil "github.com/minio/minio/internal/ioutil"
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"github.com/minio/minio/internal/logger"
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"github.com/zeebo/xxh3"
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)
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const (
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nullVersionID = "null"
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// Largest streams threshold per shard.
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largestFileThreshold = 64 * humanize.MiByte // Optimized for HDDs
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// Small file threshold below which data accompanies metadata from storage layer.
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smallFileThreshold = 128 * humanize.KiByte // Optimized for NVMe/SSDs
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// For hardrives it is possible to set this to a lower value to avoid any
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// spike in latency. But currently we are simply keeping it optimal for SSDs.
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// bigFileThreshold is the point where we add readahead to put operations.
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bigFileThreshold = 128 * humanize.MiByte
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// XL metadata file carries per object metadata.
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xlStorageFormatFile = "xl.meta"
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)
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var alignedBuf []byte
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func init() {
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alignedBuf = disk.AlignedBlock(xioutil.DirectioAlignSize)
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_, _ = rand.Read(alignedBuf)
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}
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// isValidVolname verifies a volname name in accordance with object
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// layer requirements.
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func isValidVolname(volname string) bool {
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if len(volname) < 3 {
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return false
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}
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if runtime.GOOS == "windows" {
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// Volname shouldn't have reserved characters in Windows.
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return !strings.ContainsAny(volname, `\:*?\"<>|`)
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}
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return true
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}
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// xlStorage - implements StorageAPI interface.
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type xlStorage struct {
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diskPath string
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endpoint Endpoint
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globalSync bool
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oDirect bool // indicates if this disk supports ODirect
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rootDisk bool
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diskID string
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// Indexes, will be -1 until assigned a set.
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poolIndex, setIndex, diskIndex int
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// Indicate of NSScanner is in progress in this disk
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scanning int32
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formatFileInfo os.FileInfo
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formatLegacy bool
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formatLastCheck time.Time
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diskInfoCache timedValue
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sync.RWMutex
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formatData []byte
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// mutex to prevent concurrent read operations overloading walks.
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walkMu sync.Mutex
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walkReadMu sync.Mutex
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}
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// checkPathLength - returns error if given path name length more than 255
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func checkPathLength(pathName string) error {
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// Apple OS X path length is limited to 1016
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if runtime.GOOS == "darwin" && len(pathName) > 1016 {
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return errFileNameTooLong
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}
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// Disallow more than 1024 characters on windows, there
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// are no known name_max limits on Windows.
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if runtime.GOOS == "windows" && len(pathName) > 1024 {
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return errFileNameTooLong
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}
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// On Unix we reject paths if they are just '.', '..' or '/'
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if pathName == "." || pathName == ".." || pathName == slashSeparator {
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return errFileAccessDenied
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}
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// Check each path segment length is > 255 on all Unix
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// platforms, look for this value as NAME_MAX in
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// /usr/include/linux/limits.h
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var count int64
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for _, p := range pathName {
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switch p {
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case '/':
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count = 0 // Reset
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case '\\':
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if runtime.GOOS == globalWindowsOSName {
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count = 0
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}
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default:
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count++
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if count > 255 {
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return errFileNameTooLong
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}
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}
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} // Success.
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return nil
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}
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func getValidPath(path string) (string, error) {
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if path == "" {
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return path, errInvalidArgument
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}
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var err error
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// Disallow relative paths, figure out absolute paths.
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path, err = filepath.Abs(path)
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if err != nil {
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return path, err
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}
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fi, err := Lstat(path)
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if err != nil && !osIsNotExist(err) {
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return path, err
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}
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if osIsNotExist(err) {
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// Disk not found create it.
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if err = mkdirAll(path, 0o777); err != nil {
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return path, err
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}
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}
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if fi != nil && !fi.IsDir() {
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return path, errDiskNotDir
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}
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return path, nil
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}
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// isDirEmpty - returns whether given directory is empty or not.
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func isDirEmpty(dirname string) bool {
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entries, err := readDirN(dirname, 1)
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if err != nil {
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if err != errFileNotFound {
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logger.LogIf(GlobalContext, err)
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}
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return false
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}
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return len(entries) == 0
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}
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// Initialize a new storage disk.
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func newLocalXLStorage(path string) (*xlStorage, error) {
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u := url.URL{Path: path}
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return newXLStorage(Endpoint{
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URL: &u,
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IsLocal: true,
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}, true)
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}
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// Initialize a new storage disk.
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func newXLStorage(ep Endpoint, cleanUp bool) (s *xlStorage, err error) {
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path := ep.Path
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if path, err = getValidPath(path); err != nil {
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return nil, err
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}
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var rootDisk bool
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if !globalIsCICD && !globalIsErasureSD {
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if globalRootDiskThreshold > 0 {
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// Use MINIO_ROOTDISK_THRESHOLD_SIZE to figure out if
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// this disk is a root disk.
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info, err := disk.GetInfo(path)
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if err != nil {
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return nil, err
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}
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// treat those disks with size less than or equal to the
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// threshold as rootDisks.
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rootDisk = info.Total <= globalRootDiskThreshold
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} else {
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rootDisk, err = disk.IsRootDisk(path, SlashSeparator)
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if err != nil {
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return nil, err
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}
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}
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}
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s = &xlStorage{
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diskPath: path,
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endpoint: ep,
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globalSync: globalFSOSync,
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rootDisk: rootDisk,
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poolIndex: -1,
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setIndex: -1,
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diskIndex: -1,
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}
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if cleanUp {
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bgFormatErasureCleanupTmp(s.diskPath) // cleanup any old data.
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}
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formatData, formatFi, err := formatErasureMigrate(s.diskPath)
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if err != nil && !errors.Is(err, os.ErrNotExist) {
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if os.IsPermission(err) {
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return nil, errDiskAccessDenied
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} else if isSysErrIO(err) {
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return nil, errFaultyDisk
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}
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return nil, err
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}
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s.formatData = formatData
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s.formatFileInfo = formatFi
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// Return an error if ODirect is not supported
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// unless it is a single erasure disk mode
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if err := s.checkODirectDiskSupport(); err == nil {
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s.oDirect = true
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} else {
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if globalIsErasureSD && errors.Is(err, errUnsupportedDisk) {
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s.oDirect = false
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} else {
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return s, err
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}
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}
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if len(s.formatData) == 0 {
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// Create all necessary bucket folders if possible.
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if err = makeFormatErasureMetaVolumes(s); err != nil {
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return nil, err
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}
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} else {
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format := &formatErasureV3{}
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json := jsoniter.ConfigCompatibleWithStandardLibrary
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if err = json.Unmarshal(s.formatData, &format); err != nil {
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return s, errCorruptedFormat
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}
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s.diskID = format.Erasure.This
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s.formatLastCheck = time.Now()
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s.formatLegacy = format.Erasure.DistributionAlgo == formatErasureVersionV2DistributionAlgoV1
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}
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// Success.
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return s, nil
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}
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// getDiskInfo returns given disk information.
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func getDiskInfo(diskPath string) (di disk.Info, err error) {
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if err = checkPathLength(diskPath); err == nil {
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di, err = disk.GetInfo(diskPath)
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}
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switch {
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case osIsNotExist(err):
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err = errDiskNotFound
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case isSysErrTooLong(err):
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err = errFileNameTooLong
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case isSysErrIO(err):
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err = errFaultyDisk
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}
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return di, err
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}
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// Implements stringer compatible interface.
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func (s *xlStorage) String() string {
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return s.diskPath
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}
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func (s *xlStorage) Hostname() string {
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return s.endpoint.Host
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}
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func (s *xlStorage) Endpoint() Endpoint {
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return s.endpoint
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}
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func (*xlStorage) Close() error {
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return nil
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}
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func (s *xlStorage) IsOnline() bool {
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return true
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}
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func (s *xlStorage) LastConn() time.Time {
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return time.Time{}
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}
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func (s *xlStorage) IsLocal() bool {
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return true
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}
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// Retrieve location indexes.
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func (s *xlStorage) GetDiskLoc() (poolIdx, setIdx, diskIdx int) {
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s.RLock()
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defer s.RUnlock()
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// If unset, see if we can locate it.
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if s.poolIndex < 0 || s.setIndex < 0 || s.diskIndex < 0 {
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return getXLDiskLoc(s.diskID)
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}
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return s.poolIndex, s.setIndex, s.diskIndex
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}
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// Set location indexes.
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func (s *xlStorage) SetDiskLoc(poolIdx, setIdx, diskIdx int) {
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s.poolIndex = poolIdx
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s.setIndex = setIdx
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s.diskIndex = diskIdx
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}
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func (s *xlStorage) Healing() *healingTracker {
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healingFile := pathJoin(s.diskPath, minioMetaBucket,
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bucketMetaPrefix, healingTrackerFilename)
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b, err := os.ReadFile(healingFile)
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if err != nil {
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return nil
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}
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var h healingTracker
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_, err = h.UnmarshalMsg(b)
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logger.LogIf(GlobalContext, err)
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return &h
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}
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// checkODirectDiskSupport asks the disk to write some data
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// with O_DIRECT support, return an error if any and return
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// errUnsupportedDisk if there is no O_DIRECT support
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func (s *xlStorage) checkODirectDiskSupport() error {
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// Check if backend is writable and supports O_DIRECT
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uuid := mustGetUUID()
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filePath := pathJoin(s.diskPath, ".writable-check-"+uuid+".tmp")
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defer renameAll(filePath, pathJoin(s.diskPath, minioMetaTmpDeletedBucket, uuid))
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w, err := s.openFileDirect(filePath, os.O_CREATE|os.O_WRONLY|os.O_EXCL)
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if err != nil {
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return err
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}
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_, err = w.Write(alignedBuf)
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w.Close()
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if err != nil {
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if isSysErrInvalidArg(err) {
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err = errUnsupportedDisk
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}
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}
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return err
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}
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// readsMetadata and returns disk mTime information for xl.meta
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func (s *xlStorage) readMetadataWithDMTime(ctx context.Context, itemPath string) ([]byte, time.Time, error) {
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if contextCanceled(ctx) {
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return nil, time.Time{}, ctx.Err()
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}
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if err := checkPathLength(itemPath); err != nil {
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return nil, time.Time{}, err
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}
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f, err := OpenFile(itemPath, readMode, 0o666)
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if err != nil {
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return nil, time.Time{}, err
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}
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defer f.Close()
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stat, err := f.Stat()
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if err != nil {
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return nil, time.Time{}, err
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}
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if stat.IsDir() {
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return nil, time.Time{}, &os.PathError{
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Op: "open",
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Path: itemPath,
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Err: syscall.EISDIR,
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}
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}
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buf, err := readXLMetaNoData(f, stat.Size())
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if err != nil {
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return nil, stat.ModTime().UTC(), fmt.Errorf("%w -> %s", err, itemPath)
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}
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return buf, stat.ModTime().UTC(), err
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}
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func (s *xlStorage) readMetadata(ctx context.Context, itemPath string) ([]byte, error) {
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buf, _, err := s.readMetadataWithDMTime(ctx, itemPath)
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return buf, err
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}
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func (s *xlStorage) NSScanner(ctx context.Context, cache dataUsageCache, updates chan<- dataUsageEntry, scanMode madmin.HealScanMode) (dataUsageCache, error) {
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atomic.AddInt32(&s.scanning, 1)
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defer atomic.AddInt32(&s.scanning, -1)
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// Updates must be closed before we return.
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defer close(updates)
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var lc *lifecycle.Lifecycle
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var err error
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// Check if the current bucket has a configured lifecycle policy
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if globalLifecycleSys != nil {
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lc, err = globalLifecycleSys.Get(cache.Info.Name)
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if err == nil && lc.HasActiveRules("") {
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cache.Info.lifeCycle = lc
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}
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}
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// Check if the current bucket has replication configuration
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if rcfg, _, err := globalBucketMetadataSys.GetReplicationConfig(ctx, cache.Info.Name); err == nil {
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if rcfg.HasActiveRules("", true) {
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tgts, err := globalBucketTargetSys.ListBucketTargets(ctx, cache.Info.Name)
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if err == nil {
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cache.Info.replication = replicationConfig{
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Config: rcfg,
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remotes: tgts,
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}
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}
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}
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}
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vcfg, _ := globalBucketVersioningSys.Get(cache.Info.Name)
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// return initialized object layer
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objAPI := newObjectLayerFn()
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// object layer not initialized, return.
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if objAPI == nil {
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return cache, errServerNotInitialized
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}
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cache.Info.updates = updates
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poolIdx, setIdx, _ := s.GetDiskLoc()
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dataUsageInfo, err := scanDataFolder(ctx, poolIdx, setIdx, s.diskPath, cache, func(item scannerItem) (sizeSummary, error) {
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// Look for `xl.meta/xl.json' at the leaf.
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if !strings.HasSuffix(item.Path, SlashSeparator+xlStorageFormatFile) &&
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!strings.HasSuffix(item.Path, SlashSeparator+xlStorageFormatFileV1) {
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// if no xl.meta/xl.json found, skip the file.
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return sizeSummary{}, errSkipFile
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}
|
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stopFn := globalScannerMetrics.log(scannerMetricScanObject, s.diskPath, pathJoin(item.bucket, item.objectPath()))
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res := make(map[string]string, 8)
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defer func() {
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stopFn(res)
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}()
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doneSz := globalScannerMetrics.timeSize(scannerMetricReadMetadata)
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buf, err := s.readMetadata(ctx, item.Path)
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doneSz(len(buf))
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res["metasize"] = fmt.Sprint(len(buf))
|
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if err != nil {
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res["err"] = err.Error()
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return sizeSummary{}, errSkipFile
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}
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defer metaDataPoolPut(buf)
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|
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// Remove filename which is the meta file.
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item.transformMetaDir()
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fivs, err := getFileInfoVersions(buf, item.bucket, item.objectPath())
|
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if err != nil {
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res["err"] = err.Error()
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return sizeSummary{}, errSkipFile
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}
|
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|
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sizeS := sizeSummary{}
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var noTiers bool
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if noTiers = globalTierConfigMgr.Empty(); !noTiers {
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sizeS.tiers = make(map[string]tierStats)
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}
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|
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done := globalScannerMetrics.time(scannerMetricApplyAll)
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fivs.Versions, err = item.applyVersionActions(ctx, objAPI, fivs.Versions)
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done()
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if err != nil {
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res["err"] = err.Error()
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return sizeSummary{}, errSkipFile
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}
|
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versioned := vcfg != nil && vcfg.Versioned(item.objectPath())
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|
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for _, version := range fivs.Versions {
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oi := version.ToObjectInfo(item.bucket, item.objectPath(), versioned)
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done = globalScannerMetrics.time(scannerMetricApplyVersion)
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sz := item.applyActions(ctx, objAPI, oi, &sizeS)
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done()
|
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if oi.VersionID != "" && sz == oi.Size {
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sizeS.versions++
|
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}
|
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sizeS.totalSize += sz
|
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|
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// Skip tier accounting if,
|
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// 1. no tiers configured
|
|
// 2. object version is a delete-marker or a free-version
|
|
// tracking deleted transitioned objects
|
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switch {
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case noTiers, oi.DeleteMarker, oi.TransitionedObject.FreeVersion:
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continue
|
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}
|
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tier := minioHotTier
|
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if oi.TransitionedObject.Status == lifecycle.TransitionComplete {
|
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tier = oi.TransitionedObject.Tier
|
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}
|
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sizeS.tiers[tier] = sizeS.tiers[tier].add(oi.tierStats())
|
|
}
|
|
|
|
// apply tier sweep action on free versions
|
|
if len(fivs.FreeVersions) > 0 {
|
|
res["free-versions"] = fmt.Sprint(len(fivs.FreeVersions))
|
|
}
|
|
for _, freeVersion := range fivs.FreeVersions {
|
|
oi := freeVersion.ToObjectInfo(item.bucket, item.objectPath(), versioned)
|
|
done = globalScannerMetrics.time(scannerMetricTierObjSweep)
|
|
item.applyTierObjSweep(ctx, objAPI, oi)
|
|
done()
|
|
}
|
|
|
|
// These are rather expensive. Skip if nobody listens.
|
|
if globalTrace.NumSubscribers(madmin.TraceScanner) > 0 {
|
|
if sizeS.versions > 0 {
|
|
res["versions"] = fmt.Sprint()
|
|
}
|
|
res["size"] = fmt.Sprint(sizeS.totalSize)
|
|
if len(sizeS.tiers) > 0 {
|
|
for name, tier := range sizeS.tiers {
|
|
res["size-"+name] = fmt.Sprint(tier.TotalSize)
|
|
res["versions-"+name] = fmt.Sprint(tier.NumVersions)
|
|
}
|
|
}
|
|
if sizeS.failedCount > 0 {
|
|
res["repl-failed"] = fmt.Sprintf("%d versions, %d bytes", sizeS.failedCount, sizeS.failedSize)
|
|
}
|
|
if sizeS.pendingCount > 0 {
|
|
res["repl-pending"] = fmt.Sprintf("%d versions, %d bytes", sizeS.pendingCount, sizeS.pendingSize)
|
|
}
|
|
for tgt, st := range sizeS.replTargetStats {
|
|
res["repl-size-"+tgt] = fmt.Sprint(st.replicatedSize)
|
|
if st.failedCount > 0 {
|
|
res["repl-failed-"+tgt] = fmt.Sprintf("%d versions, %d bytes", st.failedCount, st.failedSize)
|
|
}
|
|
if st.pendingCount > 0 {
|
|
res["repl-pending-"+tgt] = fmt.Sprintf("%d versions, %d bytes", st.pendingCount, st.pendingSize)
|
|
}
|
|
}
|
|
}
|
|
return sizeS, nil
|
|
}, scanMode)
|
|
if err != nil {
|
|
return dataUsageInfo, err
|
|
}
|
|
|
|
dataUsageInfo.Info.LastUpdate = time.Now()
|
|
return dataUsageInfo, nil
|
|
}
|
|
|
|
// DiskInfo provides current information about disk space usage,
|
|
// total free inodes and underlying filesystem.
|
|
func (s *xlStorage) DiskInfo(context.Context) (info DiskInfo, err error) {
|
|
s.diskInfoCache.Once.Do(func() {
|
|
s.diskInfoCache.TTL = time.Second
|
|
s.diskInfoCache.Update = func() (interface{}, error) {
|
|
dcinfo := DiskInfo{
|
|
RootDisk: s.rootDisk,
|
|
MountPath: s.diskPath,
|
|
Endpoint: s.endpoint.String(),
|
|
}
|
|
di, err := getDiskInfo(s.diskPath)
|
|
if err != nil {
|
|
return dcinfo, err
|
|
}
|
|
dcinfo.Major = di.Major
|
|
dcinfo.Minor = di.Minor
|
|
dcinfo.Total = di.Total
|
|
dcinfo.Free = di.Free
|
|
dcinfo.Used = di.Used
|
|
dcinfo.UsedInodes = di.Files - di.Ffree
|
|
dcinfo.FreeInodes = di.Ffree
|
|
dcinfo.FSType = di.FSType
|
|
diskID, err := s.GetDiskID()
|
|
// Healing is 'true' when
|
|
// - if we found an unformatted disk (no 'format.json')
|
|
// - if we found healing tracker 'healing.bin'
|
|
dcinfo.Healing = errors.Is(err, errUnformattedDisk) || (s.Healing() != nil)
|
|
dcinfo.Scanning = atomic.LoadInt32(&s.scanning) == 1
|
|
dcinfo.ID = diskID
|
|
return dcinfo, err
|
|
}
|
|
})
|
|
|
|
v, err := s.diskInfoCache.Get()
|
|
if v != nil {
|
|
info = v.(DiskInfo)
|
|
}
|
|
return info, err
|
|
}
|
|
|
|
// getVolDir - will convert incoming volume names to
|
|
// corresponding valid volume names on the backend in a platform
|
|
// compatible way for all operating systems. If volume is not found
|
|
// an error is generated.
|
|
func (s *xlStorage) getVolDir(volume string) (string, error) {
|
|
if volume == "" || volume == "." || volume == ".." {
|
|
return "", errVolumeNotFound
|
|
}
|
|
volumeDir := pathJoin(s.diskPath, volume)
|
|
return volumeDir, nil
|
|
}
|
|
|
|
func (s *xlStorage) checkFormatJSON() (os.FileInfo, error) {
|
|
formatFile := pathJoin(s.diskPath, minioMetaBucket, formatConfigFile)
|
|
fi, err := Lstat(formatFile)
|
|
if err != nil {
|
|
// If the disk is still not initialized.
|
|
if osIsNotExist(err) {
|
|
if err = Access(s.diskPath); err == nil {
|
|
// Disk is present but missing `format.json`
|
|
return nil, errUnformattedDisk
|
|
}
|
|
if osIsNotExist(err) {
|
|
return nil, errDiskNotFound
|
|
} else if osIsPermission(err) {
|
|
return nil, errDiskAccessDenied
|
|
}
|
|
logger.LogIf(GlobalContext, err) // log unexpected errors
|
|
return nil, errCorruptedFormat
|
|
} else if osIsPermission(err) {
|
|
return nil, errDiskAccessDenied
|
|
}
|
|
logger.LogIf(GlobalContext, err) // log unexpected errors
|
|
return nil, errCorruptedFormat
|
|
}
|
|
return fi, nil
|
|
}
|
|
|
|
// GetDiskID - returns the cached disk uuid
|
|
func (s *xlStorage) GetDiskID() (string, error) {
|
|
s.RLock()
|
|
diskID := s.diskID
|
|
fileInfo := s.formatFileInfo
|
|
lastCheck := s.formatLastCheck
|
|
|
|
// check if we have a valid disk ID that is less than 1 seconds old.
|
|
if fileInfo != nil && diskID != "" && time.Since(lastCheck) <= 1*time.Second {
|
|
s.RUnlock()
|
|
return diskID, nil
|
|
}
|
|
s.RUnlock()
|
|
|
|
fi, err := s.checkFormatJSON()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
if xioutil.SameFile(fi, fileInfo) && diskID != "" {
|
|
s.Lock()
|
|
// If the file has not changed, just return the cached diskID information.
|
|
s.formatLastCheck = time.Now()
|
|
s.Unlock()
|
|
return diskID, nil
|
|
}
|
|
|
|
formatFile := pathJoin(s.diskPath, minioMetaBucket, formatConfigFile)
|
|
b, err := os.ReadFile(formatFile)
|
|
if err != nil {
|
|
// If the disk is still not initialized.
|
|
if osIsNotExist(err) {
|
|
if err = Access(s.diskPath); err == nil {
|
|
// Disk is present but missing `format.json`
|
|
return "", errUnformattedDisk
|
|
}
|
|
if osIsNotExist(err) {
|
|
return "", errDiskNotFound
|
|
} else if osIsPermission(err) {
|
|
return "", errDiskAccessDenied
|
|
}
|
|
logger.LogIf(GlobalContext, err) // log unexpected errors
|
|
return "", errCorruptedFormat
|
|
} else if osIsPermission(err) {
|
|
return "", errDiskAccessDenied
|
|
}
|
|
logger.LogIf(GlobalContext, err) // log unexpected errors
|
|
return "", errCorruptedFormat
|
|
}
|
|
|
|
format := &formatErasureV3{}
|
|
json := jsoniter.ConfigCompatibleWithStandardLibrary
|
|
if err = json.Unmarshal(b, &format); err != nil {
|
|
logger.LogIf(GlobalContext, err) // log unexpected errors
|
|
return "", errCorruptedFormat
|
|
}
|
|
|
|
s.Lock()
|
|
defer s.Unlock()
|
|
s.formatData = b
|
|
s.diskID = format.Erasure.This
|
|
s.formatLegacy = format.Erasure.DistributionAlgo == formatErasureVersionV2DistributionAlgoV1
|
|
s.formatFileInfo = fi
|
|
s.formatLastCheck = time.Now()
|
|
return s.diskID, nil
|
|
}
|
|
|
|
// Make a volume entry.
|
|
func (s *xlStorage) SetDiskID(id string) {
|
|
// NO-OP for xlStorage as it is handled either by xlStorageDiskIDCheck{} for local disks or
|
|
// storage rest server for remote disks.
|
|
}
|
|
|
|
func (s *xlStorage) MakeVolBulk(ctx context.Context, volumes ...string) error {
|
|
for _, volume := range volumes {
|
|
err := s.MakeVol(ctx, volume)
|
|
if err != nil && !errors.Is(err, errVolumeExists) {
|
|
return err
|
|
}
|
|
diskHealthCheckOK(ctx, err)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Make a volume entry.
|
|
func (s *xlStorage) MakeVol(ctx context.Context, volume string) error {
|
|
if !isValidVolname(volume) {
|
|
return errInvalidArgument
|
|
}
|
|
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err = Access(volumeDir); err != nil {
|
|
// Volume does not exist we proceed to create.
|
|
if osIsNotExist(err) {
|
|
// Make a volume entry, with mode 0777 mkdir honors system umask.
|
|
err = mkdirAll(volumeDir, 0o777)
|
|
}
|
|
if osIsPermission(err) {
|
|
return errDiskAccessDenied
|
|
} else if isSysErrIO(err) {
|
|
return errFaultyDisk
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Stat succeeds we return errVolumeExists.
|
|
return errVolumeExists
|
|
}
|
|
|
|
// ListVols - list volumes.
|
|
func (s *xlStorage) ListVols(ctx context.Context) (volsInfo []VolInfo, err error) {
|
|
return listVols(ctx, s.diskPath)
|
|
}
|
|
|
|
// List all the volumes from diskPath.
|
|
func listVols(ctx context.Context, dirPath string) ([]VolInfo, error) {
|
|
if err := checkPathLength(dirPath); err != nil {
|
|
return nil, err
|
|
}
|
|
entries, err := readDir(dirPath)
|
|
if err != nil {
|
|
logger.LogIf(ctx, err)
|
|
if errors.Is(err, errFileAccessDenied) {
|
|
return nil, errDiskAccessDenied
|
|
} else if errors.Is(err, errFileNotFound) {
|
|
return nil, errDiskNotFound
|
|
}
|
|
return nil, err
|
|
}
|
|
volsInfo := make([]VolInfo, 0, len(entries))
|
|
for _, entry := range entries {
|
|
if !HasSuffix(entry, SlashSeparator) || !isValidVolname(pathutil.Clean(entry)) {
|
|
// Skip if entry is neither a directory not a valid volume name.
|
|
continue
|
|
}
|
|
volsInfo = append(volsInfo, VolInfo{
|
|
Name: pathutil.Clean(entry),
|
|
})
|
|
}
|
|
return volsInfo, nil
|
|
}
|
|
|
|
// StatVol - get volume info.
|
|
func (s *xlStorage) StatVol(ctx context.Context, volume string) (vol VolInfo, err error) {
|
|
// Verify if volume is valid and it exists.
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return VolInfo{}, err
|
|
}
|
|
|
|
// Stat a volume entry.
|
|
var st os.FileInfo
|
|
st, err = Lstat(volumeDir)
|
|
if err != nil {
|
|
switch {
|
|
case osIsNotExist(err):
|
|
return VolInfo{}, errVolumeNotFound
|
|
case osIsPermission(err):
|
|
return VolInfo{}, errDiskAccessDenied
|
|
case isSysErrIO(err):
|
|
return VolInfo{}, errFaultyDisk
|
|
default:
|
|
return VolInfo{}, err
|
|
}
|
|
}
|
|
// As os.Lstat() doesn't carry other than ModTime(), use ModTime()
|
|
// as CreatedTime.
|
|
createdTime := st.ModTime()
|
|
return VolInfo{
|
|
Name: volume,
|
|
Created: createdTime,
|
|
}, nil
|
|
}
|
|
|
|
// DeleteVol - delete a volume.
|
|
func (s *xlStorage) DeleteVol(ctx context.Context, volume string, forceDelete bool) (err error) {
|
|
// Verify if volume is valid and it exists.
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if forceDelete {
|
|
err = s.moveToTrash(volumeDir, true, true)
|
|
} else {
|
|
err = Remove(volumeDir)
|
|
}
|
|
|
|
if err != nil {
|
|
switch {
|
|
case errors.Is(err, errFileNotFound):
|
|
return errVolumeNotFound
|
|
case osIsNotExist(err):
|
|
return errVolumeNotFound
|
|
case isSysErrNotEmpty(err):
|
|
return errVolumeNotEmpty
|
|
case osIsPermission(err):
|
|
return errDiskAccessDenied
|
|
case isSysErrIO(err):
|
|
return errFaultyDisk
|
|
default:
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// ListDir - return all the entries at the given directory path.
|
|
// If an entry is a directory it will be returned with a trailing SlashSeparator.
|
|
func (s *xlStorage) ListDir(ctx context.Context, volume, dirPath string, count int) (entries []string, err error) {
|
|
if contextCanceled(ctx) {
|
|
return nil, ctx.Err()
|
|
}
|
|
|
|
// Verify if volume is valid and it exists.
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
dirPathAbs := pathJoin(volumeDir, dirPath)
|
|
if count > 0 {
|
|
entries, err = readDirN(dirPathAbs, count)
|
|
} else {
|
|
entries, err = readDir(dirPathAbs)
|
|
}
|
|
if err != nil {
|
|
if err == errFileNotFound {
|
|
if ierr := Access(volumeDir); ierr != nil {
|
|
if osIsNotExist(ierr) {
|
|
return nil, errVolumeNotFound
|
|
} else if isSysErrIO(ierr) {
|
|
return nil, errFaultyDisk
|
|
}
|
|
}
|
|
}
|
|
return nil, err
|
|
}
|
|
|
|
return entries, nil
|
|
}
|
|
|
|
func (s *xlStorage) deleteVersions(ctx context.Context, volume, path string, fis ...FileInfo) error {
|
|
var legacyJSON bool
|
|
buf, err := s.ReadAll(ctx, volume, pathJoin(path, xlStorageFormatFile))
|
|
if err != nil {
|
|
if err != errFileNotFound {
|
|
return err
|
|
}
|
|
metaDataPoolPut(buf) // Never used, return it
|
|
|
|
buf, err = s.ReadAll(ctx, volume, pathJoin(path, xlStorageFormatFileV1))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
legacyJSON = true
|
|
}
|
|
|
|
if len(buf) == 0 {
|
|
return errFileNotFound
|
|
}
|
|
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if legacyJSON {
|
|
// Delete the meta file, if there are no more versions the
|
|
// top level parent is automatically removed.
|
|
return s.deleteFile(volumeDir, pathJoin(volumeDir, path), true, false)
|
|
}
|
|
|
|
var xlMeta xlMetaV2
|
|
if err = xlMeta.LoadOrConvert(buf); err != nil {
|
|
return err
|
|
}
|
|
|
|
for _, fi := range fis {
|
|
dataDir, err := xlMeta.DeleteVersion(fi)
|
|
if err != nil {
|
|
if !fi.Deleted && (err == errFileNotFound || err == errFileVersionNotFound) {
|
|
// Ignore these since they do not exist
|
|
continue
|
|
}
|
|
return err
|
|
}
|
|
if dataDir != "" {
|
|
versionID := fi.VersionID
|
|
if versionID == "" {
|
|
versionID = nullVersionID
|
|
}
|
|
|
|
// PR #11758 used DataDir, preserve it
|
|
// for users who might have used master
|
|
// branch
|
|
xlMeta.data.remove(versionID, dataDir)
|
|
|
|
// We need to attempt delete "dataDir" on the disk
|
|
// due to a CopyObject() bug where it might have
|
|
// inlined the data incorrectly, to avoid a situation
|
|
// where we potentially leave "DataDir"
|
|
filePath := pathJoin(volumeDir, path, dataDir)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return err
|
|
}
|
|
if err = s.moveToTrash(filePath, true, false); err != nil {
|
|
if err != errFileNotFound {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
lastVersion := len(xlMeta.versions) == 0
|
|
if !lastVersion {
|
|
buf, err = xlMeta.AppendTo(metaDataPoolGet())
|
|
defer metaDataPoolPut(buf)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return s.WriteAll(ctx, volume, pathJoin(path, xlStorageFormatFile), buf)
|
|
}
|
|
|
|
// Move xl.meta to trash
|
|
err = s.moveToTrash(pathJoin(volumeDir, path, xlStorageFormatFile), false, false)
|
|
if err == nil || err == errFileNotFound {
|
|
s.deleteFile(volumeDir, pathJoin(volumeDir, path), false, false)
|
|
}
|
|
return err
|
|
}
|
|
|
|
// DeleteVersions deletes slice of versions, it can be same object
|
|
// or multiple objects.
|
|
func (s *xlStorage) DeleteVersions(ctx context.Context, volume string, versions []FileInfoVersions) []error {
|
|
errs := make([]error, len(versions))
|
|
|
|
for i, fiv := range versions {
|
|
if contextCanceled(ctx) {
|
|
errs[i] = ctx.Err()
|
|
continue
|
|
}
|
|
if err := s.deleteVersions(ctx, volume, fiv.Name, fiv.Versions...); err != nil {
|
|
errs[i] = err
|
|
}
|
|
diskHealthCheckOK(ctx, errs[i])
|
|
}
|
|
|
|
return errs
|
|
}
|
|
|
|
func (s *xlStorage) moveToTrash(filePath string, recursive, force bool) error {
|
|
pathUUID := mustGetUUID()
|
|
targetPath := pathutil.Join(s.diskPath, minioMetaTmpDeletedBucket, pathUUID)
|
|
|
|
var renameFn func(source, target string) error
|
|
if recursive {
|
|
renameFn = renameAll
|
|
} else {
|
|
renameFn = Rename
|
|
}
|
|
|
|
if err := renameFn(filePath, targetPath); err != nil {
|
|
return err
|
|
}
|
|
// immediately purge the target
|
|
if force {
|
|
removeAll(targetPath)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// DeleteVersion - deletes FileInfo metadata for path at `xl.meta`. forceDelMarker
|
|
// will force creating a new `xl.meta` to create a new delete marker
|
|
func (s *xlStorage) DeleteVersion(ctx context.Context, volume, path string, fi FileInfo, forceDelMarker bool) error {
|
|
if HasSuffix(path, SlashSeparator) {
|
|
return s.Delete(ctx, volume, path, DeleteOptions{
|
|
Recursive: false,
|
|
Force: false,
|
|
})
|
|
}
|
|
|
|
var legacyJSON bool
|
|
buf, err := s.ReadAll(ctx, volume, pathJoin(path, xlStorageFormatFile))
|
|
if err != nil {
|
|
if err != errFileNotFound {
|
|
return err
|
|
}
|
|
metaDataPoolPut(buf) // Never used, return it
|
|
if fi.Deleted && forceDelMarker {
|
|
// Create a new xl.meta with a delete marker in it
|
|
return s.WriteMetadata(ctx, volume, path, fi)
|
|
}
|
|
|
|
buf, err = s.ReadAll(ctx, volume, pathJoin(path, xlStorageFormatFileV1))
|
|
if err != nil {
|
|
if err == errFileNotFound && fi.VersionID != "" {
|
|
return errFileVersionNotFound
|
|
}
|
|
return err
|
|
}
|
|
legacyJSON = true
|
|
}
|
|
|
|
if len(buf) == 0 {
|
|
if fi.VersionID != "" {
|
|
return errFileVersionNotFound
|
|
}
|
|
return errFileNotFound
|
|
}
|
|
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if legacyJSON {
|
|
// Delete the meta file, if there are no more versions the
|
|
// top level parent is automatically removed.
|
|
return s.deleteFile(volumeDir, pathJoin(volumeDir, path), true, false)
|
|
}
|
|
|
|
var xlMeta xlMetaV2
|
|
if err = xlMeta.LoadOrConvert(buf); err != nil {
|
|
return err
|
|
}
|
|
|
|
dataDir, err := xlMeta.DeleteVersion(fi)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if dataDir != "" {
|
|
versionID := fi.VersionID
|
|
if versionID == "" {
|
|
versionID = nullVersionID
|
|
}
|
|
// PR #11758 used DataDir, preserve it
|
|
// for users who might have used master
|
|
// branch
|
|
xlMeta.data.remove(versionID, dataDir)
|
|
|
|
// We need to attempt delete "dataDir" on the disk
|
|
// due to a CopyObject() bug where it might have
|
|
// inlined the data incorrectly, to avoid a situation
|
|
// where we potentially leave "DataDir"
|
|
filePath := pathJoin(volumeDir, path, dataDir)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return err
|
|
}
|
|
if err = s.moveToTrash(filePath, true, false); err != nil {
|
|
if err != errFileNotFound {
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
if len(xlMeta.versions) != 0 {
|
|
// xl.meta must still exist for other versions, dataDir is purged.
|
|
buf, err = xlMeta.AppendTo(metaDataPoolGet())
|
|
defer metaDataPoolPut(buf)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
return s.WriteAll(ctx, volume, pathJoin(path, xlStorageFormatFile), buf)
|
|
}
|
|
|
|
// No more versions, this is the last version purge everything.
|
|
filePath := pathJoin(volumeDir, path)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return err
|
|
}
|
|
|
|
return s.deleteFile(volumeDir, filePath, true, false)
|
|
}
|
|
|
|
// Updates only metadata for a given version.
|
|
func (s *xlStorage) UpdateMetadata(ctx context.Context, volume, path string, fi FileInfo) error {
|
|
if len(fi.Metadata) == 0 {
|
|
return errInvalidArgument
|
|
}
|
|
|
|
buf, err := s.ReadAll(ctx, volume, pathJoin(path, xlStorageFormatFile))
|
|
if err != nil {
|
|
if err == errFileNotFound {
|
|
if fi.VersionID != "" {
|
|
return errFileVersionNotFound
|
|
}
|
|
}
|
|
return err
|
|
}
|
|
defer metaDataPoolPut(buf)
|
|
|
|
if !isXL2V1Format(buf) {
|
|
return errFileVersionNotFound
|
|
}
|
|
|
|
var xlMeta xlMetaV2
|
|
if err = xlMeta.Load(buf); err != nil {
|
|
logger.LogIf(ctx, err)
|
|
return err
|
|
}
|
|
|
|
if err = xlMeta.UpdateObjectVersion(fi); err != nil {
|
|
return err
|
|
}
|
|
|
|
wbuf, err := xlMeta.AppendTo(metaDataPoolGet())
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer metaDataPoolPut(wbuf)
|
|
|
|
return s.WriteAll(ctx, volume, pathJoin(path, xlStorageFormatFile), wbuf)
|
|
}
|
|
|
|
// WriteMetadata - writes FileInfo metadata for path at `xl.meta`
|
|
func (s *xlStorage) WriteMetadata(ctx context.Context, volume, path string, fi FileInfo) error {
|
|
if fi.Fresh {
|
|
var xlMeta xlMetaV2
|
|
if err := xlMeta.AddVersion(fi); err != nil {
|
|
logger.LogIf(ctx, err)
|
|
return err
|
|
}
|
|
buf, err := xlMeta.AppendTo(metaDataPoolGet())
|
|
defer metaDataPoolPut(buf)
|
|
if err != nil {
|
|
logger.LogIf(ctx, err)
|
|
return err
|
|
}
|
|
// First writes for special situations do not write to stable storage.
|
|
// this is currently used by
|
|
// - emphemeral objects such as objects created during listObjects() calls
|
|
// - newMultipartUpload() call..
|
|
return s.writeAll(ctx, volume, pathJoin(path, xlStorageFormatFile), buf, false)
|
|
}
|
|
|
|
buf, err := s.ReadAll(ctx, volume, pathJoin(path, xlStorageFormatFile))
|
|
if err != nil && err != errFileNotFound {
|
|
return err
|
|
}
|
|
defer metaDataPoolPut(buf)
|
|
|
|
var xlMeta xlMetaV2
|
|
if !isXL2V1Format(buf) {
|
|
// This is both legacy and without proper version.
|
|
err = xlMeta.AddVersion(fi)
|
|
if err != nil {
|
|
logger.LogIf(ctx, err)
|
|
return err
|
|
}
|
|
|
|
buf, err = xlMeta.AppendTo(metaDataPoolGet())
|
|
defer metaDataPoolPut(buf)
|
|
if err != nil {
|
|
logger.LogIf(ctx, err)
|
|
return err
|
|
}
|
|
} else {
|
|
if err = xlMeta.Load(buf); err != nil {
|
|
logger.LogIf(ctx, err)
|
|
// Corrupted data, reset and write.
|
|
xlMeta = xlMetaV2{}
|
|
}
|
|
|
|
if err = xlMeta.AddVersion(fi); err != nil {
|
|
logger.LogIf(ctx, err)
|
|
return err
|
|
}
|
|
|
|
buf, err = xlMeta.AppendTo(metaDataPoolGet())
|
|
defer metaDataPoolPut(buf)
|
|
if err != nil {
|
|
logger.LogIf(ctx, err)
|
|
return err
|
|
}
|
|
}
|
|
|
|
return s.WriteAll(ctx, volume, pathJoin(path, xlStorageFormatFile), buf)
|
|
}
|
|
|
|
func (s *xlStorage) renameLegacyMetadata(volumeDir, path string) (err error) {
|
|
s.RLock()
|
|
legacy := s.formatLegacy
|
|
s.RUnlock()
|
|
if !legacy {
|
|
// if its not a legacy backend then this function is
|
|
// a no-op always returns errFileNotFound
|
|
return errFileNotFound
|
|
}
|
|
|
|
// Validate file path length, before reading.
|
|
filePath := pathJoin(volumeDir, path)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return err
|
|
}
|
|
|
|
srcFilePath := pathJoin(filePath, xlStorageFormatFileV1)
|
|
dstFilePath := pathJoin(filePath, xlStorageFormatFile)
|
|
|
|
// Renaming xl.json to xl.meta should be fully synced to disk.
|
|
defer func() {
|
|
if err == nil {
|
|
if s.globalSync {
|
|
// Sync to disk only upon success.
|
|
globalSync()
|
|
}
|
|
}
|
|
}()
|
|
|
|
if err = Rename(srcFilePath, dstFilePath); err != nil {
|
|
switch {
|
|
case isSysErrNotDir(err):
|
|
return errFileNotFound
|
|
case isSysErrPathNotFound(err):
|
|
return errFileNotFound
|
|
case isSysErrCrossDevice(err):
|
|
return fmt.Errorf("%w (%s)->(%s)", errCrossDeviceLink, srcFilePath, dstFilePath)
|
|
case osIsNotExist(err):
|
|
return errFileNotFound
|
|
case osIsExist(err):
|
|
// This is returned only when destination is a directory and we
|
|
// are attempting a rename from file to directory.
|
|
return errIsNotRegular
|
|
default:
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *xlStorage) readRaw(ctx context.Context, volumeDir, filePath string, readData bool) (buf []byte, dmTime time.Time, err error) {
|
|
if readData {
|
|
buf, dmTime, err = s.readAllData(ctx, volumeDir, pathJoin(filePath, xlStorageFormatFile))
|
|
} else {
|
|
buf, dmTime, err = s.readMetadataWithDMTime(ctx, pathJoin(filePath, xlStorageFormatFile))
|
|
if err != nil {
|
|
if osIsNotExist(err) {
|
|
if aerr := Access(volumeDir); aerr != nil && osIsNotExist(aerr) {
|
|
return nil, time.Time{}, errVolumeNotFound
|
|
}
|
|
}
|
|
err = osErrToFileErr(err)
|
|
}
|
|
}
|
|
|
|
if err != nil {
|
|
if err == errFileNotFound {
|
|
buf, dmTime, err = s.readAllData(ctx, volumeDir, pathJoin(filePath, xlStorageFormatFileV1))
|
|
if err != nil {
|
|
return nil, time.Time{}, err
|
|
}
|
|
} else {
|
|
return nil, time.Time{}, err
|
|
}
|
|
}
|
|
|
|
if len(buf) == 0 {
|
|
return nil, time.Time{}, errFileNotFound
|
|
}
|
|
|
|
return buf, dmTime, nil
|
|
}
|
|
|
|
// ReadXL reads from path/xl.meta, does not interpret the data it read. This
|
|
// is a raw call equivalent of ReadVersion().
|
|
func (s *xlStorage) ReadXL(ctx context.Context, volume, path string, readData bool) (RawFileInfo, error) {
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return RawFileInfo{}, err
|
|
}
|
|
|
|
// Validate file path length, before reading.
|
|
filePath := pathJoin(volumeDir, path)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return RawFileInfo{}, err
|
|
}
|
|
|
|
buf, dmTime, err := s.readRaw(ctx, volumeDir, filePath, readData)
|
|
return RawFileInfo{
|
|
Buf: buf,
|
|
DiskMTime: dmTime,
|
|
}, err
|
|
}
|
|
|
|
// ReadVersion - reads metadata and returns FileInfo at path `xl.meta`
|
|
// for all objects less than `32KiB` this call returns data as well
|
|
// along with metadata.
|
|
func (s *xlStorage) ReadVersion(ctx context.Context, volume, path, versionID string, readData bool) (fi FileInfo, err error) {
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return fi, err
|
|
}
|
|
// Validate file path length, before reading.
|
|
filePath := pathJoin(volumeDir, path)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return fi, err
|
|
}
|
|
|
|
buf, dmTime, err := s.readRaw(ctx, volumeDir, filePath, readData)
|
|
if err != nil {
|
|
if err == errFileNotFound {
|
|
if versionID != "" {
|
|
return fi, errFileVersionNotFound
|
|
}
|
|
}
|
|
return fi, err
|
|
}
|
|
|
|
fi, err = getFileInfo(buf, volume, path, versionID, readData)
|
|
if err != nil {
|
|
return fi, err
|
|
}
|
|
fi.DiskMTime = dmTime
|
|
|
|
if len(fi.Data) == 0 {
|
|
// We did not read inline data, so we have no references.
|
|
defer metaDataPoolPut(buf)
|
|
}
|
|
|
|
if readData {
|
|
if len(fi.Data) > 0 || fi.Size == 0 {
|
|
if fi.InlineData() {
|
|
// If written with header we are fine.
|
|
return fi, nil
|
|
}
|
|
if fi.Size == 0 || !(fi.VersionID != "" && fi.VersionID != nullVersionID) {
|
|
// If versioned we have no conflicts.
|
|
fi.SetInlineData()
|
|
return fi, nil
|
|
}
|
|
|
|
// For overwritten objects without header we might have a conflict with
|
|
// data written later.
|
|
// Check the data path if there is a part with data.
|
|
partPath := fmt.Sprintf("part.%d", fi.Parts[0].Number)
|
|
dataPath := pathJoin(path, fi.DataDir, partPath)
|
|
_, err = s.StatInfoFile(ctx, volume, dataPath, false)
|
|
if err != nil {
|
|
// Set the inline header, our inlined data is fine.
|
|
fi.SetInlineData()
|
|
return fi, nil
|
|
}
|
|
// Data exists on disk, remove the version from metadata.
|
|
fi.Data = nil
|
|
}
|
|
|
|
// Reading data for small objects when
|
|
// - object has not yet transitioned
|
|
// - object size lesser than 128KiB
|
|
// - object has maximum of 1 parts
|
|
if fi.TransitionStatus == "" &&
|
|
fi.DataDir != "" && fi.Size <= smallFileThreshold &&
|
|
len(fi.Parts) == 1 {
|
|
partPath := fmt.Sprintf("part.%d", fi.Parts[0].Number)
|
|
dataPath := pathJoin(volumeDir, path, fi.DataDir, partPath)
|
|
fi.Data, _, err = s.readAllData(ctx, volumeDir, dataPath)
|
|
if err != nil {
|
|
return FileInfo{}, err
|
|
}
|
|
}
|
|
}
|
|
|
|
return fi, nil
|
|
}
|
|
|
|
func (s *xlStorage) readAllData(ctx context.Context, volumeDir string, filePath string) (buf []byte, dmTime time.Time, err error) {
|
|
if contextCanceled(ctx) {
|
|
return nil, time.Time{}, ctx.Err()
|
|
}
|
|
|
|
odirectEnabled := !globalAPIConfig.isDisableODirect() && s.oDirect
|
|
var f *os.File
|
|
if odirectEnabled {
|
|
f, err = OpenFileDirectIO(filePath, readMode, 0o666)
|
|
} else {
|
|
f, err = OpenFile(filePath, readMode, 0o666)
|
|
}
|
|
if err != nil {
|
|
if osIsNotExist(err) {
|
|
// Check if the object doesn't exist because its bucket
|
|
// is missing in order to return the correct error.
|
|
if err = Access(volumeDir); err != nil && osIsNotExist(err) {
|
|
return nil, dmTime, errVolumeNotFound
|
|
}
|
|
return nil, dmTime, errFileNotFound
|
|
} else if osIsPermission(err) {
|
|
return nil, dmTime, errFileAccessDenied
|
|
} else if isSysErrNotDir(err) || isSysErrIsDir(err) {
|
|
return nil, dmTime, errFileNotFound
|
|
} else if isSysErrHandleInvalid(err) {
|
|
// This case is special and needs to be handled for windows.
|
|
return nil, dmTime, errFileNotFound
|
|
} else if isSysErrIO(err) {
|
|
return nil, dmTime, errFaultyDisk
|
|
} else if isSysErrTooManyFiles(err) {
|
|
return nil, dmTime, errTooManyOpenFiles
|
|
} else if isSysErrInvalidArg(err) {
|
|
st, _ := Lstat(filePath)
|
|
if st != nil && st.IsDir() {
|
|
// Linux returns InvalidArg for directory O_DIRECT
|
|
// we need to keep this fallback code to return correct
|
|
// errors upwards.
|
|
return nil, dmTime, errFileNotFound
|
|
}
|
|
return nil, dmTime, errUnsupportedDisk
|
|
}
|
|
return nil, dmTime, err
|
|
}
|
|
r := &xioutil.ODirectReader{
|
|
File: f,
|
|
SmallFile: true,
|
|
}
|
|
defer r.Close()
|
|
|
|
// Get size for precise allocation.
|
|
stat, err := f.Stat()
|
|
if err != nil {
|
|
buf, err = io.ReadAll(r)
|
|
return buf, dmTime, osErrToFileErr(err)
|
|
}
|
|
if stat.IsDir() {
|
|
return nil, dmTime, errFileNotFound
|
|
}
|
|
|
|
// Read into appropriate buffer.
|
|
sz := stat.Size()
|
|
if sz <= metaDataReadDefault {
|
|
buf = metaDataPoolGet()
|
|
buf = buf[:sz]
|
|
} else {
|
|
buf = make([]byte, sz)
|
|
}
|
|
// Read file...
|
|
_, err = io.ReadFull(diskHealthReader(ctx, r), buf)
|
|
|
|
return buf, stat.ModTime().UTC(), osErrToFileErr(err)
|
|
}
|
|
|
|
// ReadAll is a raw call, reads content at any path and returns the buffer.
|
|
func (s *xlStorage) ReadAll(ctx context.Context, volume string, path string) (buf []byte, err error) {
|
|
// Specific optimization to avoid re-read from the drives for `format.json`
|
|
// in-case the caller is a network operation.
|
|
if volume == minioMetaBucket && path == formatConfigFile {
|
|
s.RLock()
|
|
formatData := make([]byte, len(s.formatData))
|
|
copy(formatData, s.formatData)
|
|
s.RUnlock()
|
|
if len(formatData) > 0 {
|
|
return formatData, nil
|
|
}
|
|
}
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Validate file path length, before reading.
|
|
filePath := pathJoin(volumeDir, path)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
buf, _, err = s.readAllData(ctx, volumeDir, filePath)
|
|
return buf, err
|
|
}
|
|
|
|
// ReadFile reads exactly len(buf) bytes into buf. It returns the
|
|
// number of bytes copied. The error is EOF only if no bytes were
|
|
// read. On return, n == len(buf) if and only if err == nil. n == 0
|
|
// for io.EOF.
|
|
//
|
|
// If an EOF happens after reading some but not all the bytes,
|
|
// ReadFile returns ErrUnexpectedEOF.
|
|
//
|
|
// If the BitrotVerifier is not nil or not verified ReadFile
|
|
// tries to verify whether the disk has bitrot.
|
|
//
|
|
// Additionally ReadFile also starts reading from an offset. ReadFile
|
|
// semantics are same as io.ReadFull.
|
|
func (s *xlStorage) ReadFile(ctx context.Context, volume string, path string, offset int64, buffer []byte, verifier *BitrotVerifier) (int64, error) {
|
|
if offset < 0 {
|
|
return 0, errInvalidArgument
|
|
}
|
|
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
var n int
|
|
|
|
// Stat a volume entry.
|
|
if err = Access(volumeDir); err != nil {
|
|
if osIsNotExist(err) {
|
|
return 0, errVolumeNotFound
|
|
} else if isSysErrIO(err) {
|
|
return 0, errFaultyDisk
|
|
} else if osIsPermission(err) {
|
|
return 0, errFileAccessDenied
|
|
}
|
|
return 0, err
|
|
}
|
|
|
|
// Validate effective path length before reading.
|
|
filePath := pathJoin(volumeDir, path)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
// Open the file for reading.
|
|
file, err := OpenFile(filePath, readMode, 0o666)
|
|
if err != nil {
|
|
switch {
|
|
case osIsNotExist(err):
|
|
return 0, errFileNotFound
|
|
case osIsPermission(err):
|
|
return 0, errFileAccessDenied
|
|
case isSysErrNotDir(err):
|
|
return 0, errFileAccessDenied
|
|
case isSysErrIO(err):
|
|
return 0, errFaultyDisk
|
|
case isSysErrTooManyFiles(err):
|
|
return 0, errTooManyOpenFiles
|
|
default:
|
|
return 0, err
|
|
}
|
|
}
|
|
|
|
// Close the file descriptor.
|
|
defer file.Close()
|
|
|
|
st, err := file.Stat()
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
// Verify it is a regular file, otherwise subsequent Seek is
|
|
// undefined.
|
|
if !st.Mode().IsRegular() {
|
|
return 0, errIsNotRegular
|
|
}
|
|
|
|
if verifier == nil {
|
|
n, err = file.ReadAt(buffer, offset)
|
|
return int64(n), err
|
|
}
|
|
|
|
h := verifier.algorithm.New()
|
|
if _, err = io.Copy(h, io.LimitReader(file, offset)); err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
if n, err = io.ReadFull(file, buffer); err != nil {
|
|
return int64(n), err
|
|
}
|
|
|
|
if _, err = h.Write(buffer); err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
if _, err = io.Copy(h, file); err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
if !bytes.Equal(h.Sum(nil), verifier.sum) {
|
|
return 0, errFileCorrupt
|
|
}
|
|
|
|
return int64(len(buffer)), nil
|
|
}
|
|
|
|
func (s *xlStorage) openFileDirect(path string, mode int) (f *os.File, err error) {
|
|
// Create top level directories if they don't exist.
|
|
// with mode 0o777 mkdir honors system umask.
|
|
mkdirAll(pathutil.Dir(path), 0o777) // don't need to fail here
|
|
|
|
w, err := OpenFileDirectIO(path, mode, 0o666)
|
|
if err != nil {
|
|
switch {
|
|
case isSysErrInvalidArg(err):
|
|
return nil, errUnsupportedDisk
|
|
case osIsPermission(err):
|
|
return nil, errDiskAccessDenied
|
|
case isSysErrIO(err):
|
|
return nil, errFaultyDisk
|
|
case isSysErrNotDir(err):
|
|
return nil, errDiskNotDir
|
|
case os.IsNotExist(err):
|
|
return nil, errDiskNotFound
|
|
}
|
|
}
|
|
|
|
return w, nil
|
|
}
|
|
|
|
func (s *xlStorage) openFileSync(filePath string, mode int) (f *os.File, err error) {
|
|
// Create top level directories if they don't exist.
|
|
// with mode 0777 mkdir honors system umask.
|
|
if err = mkdirAll(pathutil.Dir(filePath), 0o777); err != nil {
|
|
return nil, osErrToFileErr(err)
|
|
}
|
|
|
|
w, err := OpenFile(filePath, mode|writeMode, 0o666)
|
|
if err != nil {
|
|
// File path cannot be verified since one of the parents is a file.
|
|
switch {
|
|
case isSysErrIsDir(err):
|
|
return nil, errIsNotRegular
|
|
case osIsPermission(err):
|
|
return nil, errFileAccessDenied
|
|
case isSysErrNotDir(err):
|
|
return nil, errFileAccessDenied
|
|
case isSysErrIO(err):
|
|
return nil, errFaultyDisk
|
|
case isSysErrTooManyFiles(err):
|
|
return nil, errTooManyOpenFiles
|
|
default:
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return w, nil
|
|
}
|
|
|
|
func (s *xlStorage) openFileNoSync(filePath string, mode int) (f *os.File, err error) {
|
|
// Create top level directories if they don't exist.
|
|
// with mode 0777 mkdir honors system umask.
|
|
if err = mkdirAll(pathutil.Dir(filePath), 0o777); err != nil {
|
|
return nil, osErrToFileErr(err)
|
|
}
|
|
|
|
w, err := OpenFile(filePath, mode, 0o666)
|
|
if err != nil {
|
|
// File path cannot be verified since one of the parents is a file.
|
|
switch {
|
|
case isSysErrIsDir(err):
|
|
return nil, errIsNotRegular
|
|
case osIsPermission(err):
|
|
return nil, errFileAccessDenied
|
|
case isSysErrIO(err):
|
|
return nil, errFaultyDisk
|
|
case isSysErrTooManyFiles(err):
|
|
return nil, errTooManyOpenFiles
|
|
default:
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
return w, nil
|
|
}
|
|
|
|
// ReadFileStream - Returns the read stream of the file.
|
|
func (s *xlStorage) ReadFileStream(ctx context.Context, volume, path string, offset, length int64) (io.ReadCloser, error) {
|
|
if offset < 0 {
|
|
return nil, errInvalidArgument
|
|
}
|
|
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Validate effective path length before reading.
|
|
filePath := pathJoin(volumeDir, path)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
odirectEnabled := !globalAPIConfig.isDisableODirect() && s.oDirect
|
|
|
|
var file *os.File
|
|
if odirectEnabled {
|
|
file, err = OpenFileDirectIO(filePath, readMode, 0o666)
|
|
} else {
|
|
file, err = OpenFile(filePath, readMode, 0o666)
|
|
}
|
|
if err != nil {
|
|
switch {
|
|
case osIsNotExist(err):
|
|
if err = Access(volumeDir); err != nil && osIsNotExist(err) {
|
|
return nil, errVolumeNotFound
|
|
}
|
|
return nil, errFileNotFound
|
|
case osIsPermission(err):
|
|
return nil, errFileAccessDenied
|
|
case isSysErrNotDir(err):
|
|
return nil, errFileAccessDenied
|
|
case isSysErrIO(err):
|
|
return nil, errFaultyDisk
|
|
case isSysErrTooManyFiles(err):
|
|
return nil, errTooManyOpenFiles
|
|
case isSysErrInvalidArg(err):
|
|
return nil, errUnsupportedDisk
|
|
default:
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
st, err := file.Stat()
|
|
if err != nil {
|
|
file.Close()
|
|
return nil, err
|
|
}
|
|
|
|
// Verify it is a regular file, otherwise subsequent Seek is
|
|
// undefined.
|
|
if !st.Mode().IsRegular() {
|
|
file.Close()
|
|
return nil, errIsNotRegular
|
|
}
|
|
|
|
if st.Size() < offset+length {
|
|
// Expected size cannot be satisfied for
|
|
// requested offset and length
|
|
file.Close()
|
|
return nil, errFileCorrupt
|
|
}
|
|
|
|
alignment := offset%xioutil.DirectioAlignSize == 0
|
|
if !alignment && odirectEnabled {
|
|
if err = disk.DisableDirectIO(file); err != nil {
|
|
file.Close()
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
if offset > 0 {
|
|
if _, err = file.Seek(offset, io.SeekStart); err != nil {
|
|
file.Close()
|
|
return nil, err
|
|
}
|
|
}
|
|
|
|
or := &xioutil.ODirectReader{
|
|
File: file,
|
|
// Select bigger blocks when reading at least 50% of a big block.
|
|
SmallFile: length <= xioutil.BlockSizeLarge/2,
|
|
}
|
|
|
|
r := struct {
|
|
io.Reader
|
|
io.Closer
|
|
}{Reader: io.LimitReader(diskHealthReader(ctx, or), length), Closer: closeWrapper(func() error {
|
|
if (!alignment || offset+length%xioutil.DirectioAlignSize != 0) && odirectEnabled {
|
|
// invalidate page-cache for unaligned reads.
|
|
// skip removing from page-cache only
|
|
// if O_DIRECT was disabled.
|
|
disk.FadviseDontNeed(file)
|
|
}
|
|
return or.Close()
|
|
})}
|
|
|
|
return r, nil
|
|
}
|
|
|
|
// closeWrapper converts a function to an io.Closer
|
|
type closeWrapper func() error
|
|
|
|
// Close calls the wrapped function.
|
|
func (c closeWrapper) Close() error {
|
|
return c()
|
|
}
|
|
|
|
// CreateFile - creates the file.
|
|
func (s *xlStorage) CreateFile(ctx context.Context, volume, path string, fileSize int64, r io.Reader) (err error) {
|
|
if fileSize < -1 {
|
|
return errInvalidArgument
|
|
}
|
|
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
filePath := pathJoin(volumeDir, path)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return err
|
|
}
|
|
|
|
parentFilePath := pathutil.Dir(filePath)
|
|
defer func() {
|
|
if err != nil {
|
|
if volume == minioMetaTmpBucket {
|
|
// only cleanup parent path if the
|
|
// parent volume name is minioMetaTmpBucket
|
|
removeAll(parentFilePath)
|
|
}
|
|
}
|
|
}()
|
|
|
|
return s.writeAllDirect(ctx, filePath, fileSize, r, os.O_CREATE|os.O_WRONLY|os.O_EXCL)
|
|
}
|
|
|
|
func (s *xlStorage) writeAllDirect(ctx context.Context, filePath string, fileSize int64, r io.Reader, flags int) (err error) {
|
|
// Create top level directories if they don't exist.
|
|
// with mode 0777 mkdir honors system umask.
|
|
parentFilePath := pathutil.Dir(filePath)
|
|
if err = mkdirAll(parentFilePath, 0o777); err != nil {
|
|
return osErrToFileErr(err)
|
|
}
|
|
|
|
odirectEnabled := s.oDirect
|
|
var w *os.File
|
|
if odirectEnabled {
|
|
w, err = OpenFileDirectIO(filePath, flags, 0o666)
|
|
} else {
|
|
w, err = OpenFile(filePath, flags, 0o666)
|
|
}
|
|
if err != nil {
|
|
return osErrToFileErr(err)
|
|
}
|
|
defer w.Close()
|
|
|
|
var bufp *[]byte
|
|
if fileSize > 0 && fileSize >= largestFileThreshold {
|
|
// use a larger 4MiB buffer for a really large streams.
|
|
bufp = xioutil.ODirectPoolXLarge.Get().(*[]byte)
|
|
defer xioutil.ODirectPoolXLarge.Put(bufp)
|
|
} else if fileSize <= smallFileThreshold {
|
|
bufp = xioutil.ODirectPoolSmall.Get().(*[]byte)
|
|
defer xioutil.ODirectPoolSmall.Put(bufp)
|
|
} else {
|
|
bufp = xioutil.ODirectPoolLarge.Get().(*[]byte)
|
|
defer xioutil.ODirectPoolLarge.Put(bufp)
|
|
}
|
|
|
|
var written int64
|
|
if odirectEnabled {
|
|
written, err = xioutil.CopyAligned(diskHealthWriter(ctx, w), r, *bufp, fileSize, w)
|
|
} else {
|
|
written, err = io.CopyBuffer(diskHealthWriter(ctx, w), r, *bufp)
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if written < fileSize && fileSize >= 0 {
|
|
return errLessData
|
|
} else if written > fileSize && fileSize >= 0 {
|
|
return errMoreData
|
|
}
|
|
|
|
// Only interested in flushing the size_t not mtime/atime
|
|
return Fdatasync(w)
|
|
}
|
|
|
|
func (s *xlStorage) writeAll(ctx context.Context, volume string, path string, b []byte, sync bool) (err error) {
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
filePath := pathJoin(volumeDir, path)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return err
|
|
}
|
|
|
|
flags := os.O_CREATE | os.O_WRONLY | os.O_TRUNC
|
|
|
|
var w *os.File
|
|
if sync {
|
|
// Perform directIO along with fdatasync for larger xl.meta, mostly when
|
|
// xl.meta has "inlined data" we prefer writing O_DIRECT and then doing
|
|
// fdatasync() at the end instead of opening the file with O_DSYNC.
|
|
//
|
|
// This is an optimization mainly to ensure faster I/O.
|
|
if len(b) > xioutil.DirectioAlignSize {
|
|
r := bytes.NewReader(b)
|
|
return s.writeAllDirect(ctx, filePath, r.Size(), r, flags)
|
|
}
|
|
w, err = s.openFileSync(filePath, flags)
|
|
} else {
|
|
w, err = s.openFileNoSync(filePath, flags)
|
|
}
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer w.Close()
|
|
|
|
n, err := w.Write(b)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if n != len(b) {
|
|
return io.ErrShortWrite
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (s *xlStorage) WriteAll(ctx context.Context, volume string, path string, b []byte) (err error) {
|
|
return s.writeAll(ctx, volume, path, b, true)
|
|
}
|
|
|
|
// AppendFile - append a byte array at path, if file doesn't exist at
|
|
// path this call explicitly creates it.
|
|
func (s *xlStorage) AppendFile(ctx context.Context, volume string, path string, buf []byte) (err error) {
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Stat a volume entry.
|
|
if err = Access(volumeDir); err != nil {
|
|
if osIsNotExist(err) {
|
|
return errVolumeNotFound
|
|
} else if osIsPermission(err) {
|
|
return errVolumeAccessDenied
|
|
} else if isSysErrIO(err) {
|
|
return errFaultyDisk
|
|
}
|
|
return err
|
|
}
|
|
|
|
filePath := pathJoin(volumeDir, path)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return err
|
|
}
|
|
|
|
var w *os.File
|
|
// Create file if not found. Not doing O_DIRECT here to avoid the code that does buffer aligned writes.
|
|
// AppendFile() is only used by healing code to heal objects written in old format.
|
|
w, err = s.openFileSync(filePath, os.O_CREATE|os.O_APPEND|os.O_WRONLY)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer w.Close()
|
|
|
|
n, err := w.Write(buf)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if n != len(buf) {
|
|
return io.ErrShortWrite
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// CheckParts check if path has necessary parts available.
|
|
func (s *xlStorage) CheckParts(ctx context.Context, volume string, path string, fi FileInfo) error {
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Stat a volume entry.
|
|
if err = Access(volumeDir); err != nil {
|
|
if osIsNotExist(err) {
|
|
return errVolumeNotFound
|
|
}
|
|
return err
|
|
}
|
|
|
|
for _, part := range fi.Parts {
|
|
partPath := pathJoin(path, fi.DataDir, fmt.Sprintf("part.%d", part.Number))
|
|
filePath := pathJoin(volumeDir, partPath)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return err
|
|
}
|
|
st, err := Lstat(filePath)
|
|
if err != nil {
|
|
return osErrToFileErr(err)
|
|
}
|
|
if st.Mode().IsDir() {
|
|
return errFileNotFound
|
|
}
|
|
// Check if shard is truncated.
|
|
if st.Size() < fi.Erasure.ShardFileSize(part.Size) {
|
|
return errFileCorrupt
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// deleteFile deletes a file or a directory if its empty unless recursive
|
|
// is set to true. If the target is successfully deleted, it will recursively
|
|
// move up the tree, deleting empty parent directories until it finds one
|
|
// with files in it. Returns nil for a non-empty directory even when
|
|
// recursive is set to false.
|
|
func (s *xlStorage) deleteFile(basePath, deletePath string, recursive, force bool) error {
|
|
if basePath == "" || deletePath == "" {
|
|
return nil
|
|
}
|
|
isObjectDir := HasSuffix(deletePath, SlashSeparator)
|
|
basePath = pathutil.Clean(basePath)
|
|
deletePath = pathutil.Clean(deletePath)
|
|
if !strings.HasPrefix(deletePath, basePath) || deletePath == basePath {
|
|
return nil
|
|
}
|
|
|
|
var err error
|
|
if recursive {
|
|
err = s.moveToTrash(deletePath, true, force)
|
|
} else {
|
|
err = Remove(deletePath)
|
|
}
|
|
if err != nil {
|
|
switch {
|
|
case isSysErrNotEmpty(err):
|
|
// if object is a directory, but if its not empty
|
|
// return FileNotFound to indicate its an empty prefix.
|
|
if isObjectDir {
|
|
return errFileNotFound
|
|
}
|
|
// Ignore errors if the directory is not empty. The server relies on
|
|
// this functionality, and sometimes uses recursion that should not
|
|
// error on parent directories.
|
|
return nil
|
|
case osIsNotExist(err):
|
|
return nil
|
|
case errors.Is(err, errFileNotFound):
|
|
return nil
|
|
case osIsPermission(err):
|
|
return errFileAccessDenied
|
|
case isSysErrIO(err):
|
|
return errFaultyDisk
|
|
default:
|
|
return err
|
|
}
|
|
}
|
|
|
|
deletePath = pathutil.Dir(deletePath)
|
|
|
|
// Delete parent directory obviously not recursively. Errors for
|
|
// parent directories shouldn't trickle down.
|
|
s.deleteFile(basePath, deletePath, false, false)
|
|
|
|
return nil
|
|
}
|
|
|
|
// DeleteFile - delete a file at path.
|
|
func (s *xlStorage) Delete(ctx context.Context, volume string, path string, deleteOpts DeleteOptions) (err error) {
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Stat a volume entry.
|
|
if err = Access(volumeDir); err != nil {
|
|
if osIsNotExist(err) {
|
|
return errVolumeNotFound
|
|
} else if osIsPermission(err) {
|
|
return errVolumeAccessDenied
|
|
} else if isSysErrIO(err) {
|
|
return errFaultyDisk
|
|
}
|
|
return err
|
|
}
|
|
|
|
// Following code is needed so that we retain SlashSeparator suffix if any in
|
|
// path argument.
|
|
filePath := pathJoin(volumeDir, path)
|
|
if err = checkPathLength(filePath); err != nil {
|
|
return err
|
|
}
|
|
|
|
// Delete file and delete parent directory as well if it's empty.
|
|
return s.deleteFile(volumeDir, filePath, deleteOpts.Recursive, deleteOpts.Force)
|
|
}
|
|
|
|
func skipAccessChecks(volume string) (ok bool) {
|
|
switch volume {
|
|
case minioMetaTmpBucket, minioMetaBucket, minioMetaMultipartBucket, minioMetaTmpDeletedBucket:
|
|
ok = true
|
|
}
|
|
return ok
|
|
}
|
|
|
|
// RenameData - rename source path to destination path atomically, metadata and data directory.
|
|
func (s *xlStorage) RenameData(ctx context.Context, srcVolume, srcPath string, fi FileInfo, dstVolume, dstPath string) (sign uint64, err error) {
|
|
defer func() {
|
|
if err != nil && !contextCanceled(ctx) && !errors.Is(err, errFileNotFound) {
|
|
// Only log these errors if context is not yet canceled.
|
|
logger.LogIf(ctx, fmt.Errorf("srcVolume: %s, srcPath: %s, dstVolume: %s:, dstPath: %s - error %v",
|
|
srcVolume, srcPath,
|
|
dstVolume, dstPath,
|
|
err))
|
|
}
|
|
if err == nil {
|
|
if s.globalSync {
|
|
globalSync()
|
|
}
|
|
}
|
|
}()
|
|
|
|
srcVolumeDir, err := s.getVolDir(srcVolume)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
dstVolumeDir, err := s.getVolDir(dstVolume)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
if !skipAccessChecks(srcVolume) {
|
|
// Stat a volume entry.
|
|
if err = Access(srcVolumeDir); err != nil {
|
|
if osIsNotExist(err) {
|
|
return 0, errVolumeNotFound
|
|
} else if isSysErrIO(err) {
|
|
return 0, errFaultyDisk
|
|
}
|
|
return 0, err
|
|
}
|
|
}
|
|
|
|
if !skipAccessChecks(dstVolume) {
|
|
if err = Access(dstVolumeDir); err != nil {
|
|
if osIsNotExist(err) {
|
|
return 0, errVolumeNotFound
|
|
} else if isSysErrIO(err) {
|
|
return 0, errFaultyDisk
|
|
}
|
|
return 0, err
|
|
}
|
|
}
|
|
|
|
srcFilePath := pathutil.Join(srcVolumeDir, pathJoin(srcPath, xlStorageFormatFile))
|
|
dstFilePath := pathutil.Join(dstVolumeDir, pathJoin(dstPath, xlStorageFormatFile))
|
|
|
|
var srcDataPath string
|
|
var dstDataPath string
|
|
var dataDir string
|
|
if !fi.IsRemote() {
|
|
dataDir = retainSlash(fi.DataDir)
|
|
}
|
|
if dataDir != "" {
|
|
srcDataPath = retainSlash(pathJoin(srcVolumeDir, srcPath, dataDir))
|
|
// make sure to always use path.Join here, do not use pathJoin as
|
|
// it would additionally add `/` at the end and it comes in the
|
|
// way of renameAll(), parentDir creation.
|
|
dstDataPath = pathutil.Join(dstVolumeDir, dstPath, dataDir)
|
|
}
|
|
|
|
if err = checkPathLength(srcFilePath); err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
if err = checkPathLength(dstFilePath); err != nil {
|
|
return 0, err
|
|
}
|
|
|
|
dstBuf, err := xioutil.ReadFile(dstFilePath)
|
|
if err != nil {
|
|
// handle situations when dstFilePath is 'file'
|
|
// for example such as someone is trying to
|
|
// upload an object such as `prefix/object/xl.meta`
|
|
// where `prefix/object` is already an object
|
|
if isSysErrNotDir(err) && runtime.GOOS != globalWindowsOSName {
|
|
// NOTE: On windows the error happens at
|
|
// next line and returns appropriate error.
|
|
return 0, errFileAccessDenied
|
|
}
|
|
if !osIsNotExist(err) {
|
|
return 0, osErrToFileErr(err)
|
|
}
|
|
// errFileNotFound comes here.
|
|
err = s.renameLegacyMetadata(dstVolumeDir, dstPath)
|
|
if err != nil && err != errFileNotFound {
|
|
return 0, err
|
|
}
|
|
if err == nil {
|
|
dstBuf, err = xioutil.ReadFile(dstFilePath)
|
|
if err != nil && !osIsNotExist(err) {
|
|
return 0, osErrToFileErr(err)
|
|
}
|
|
}
|
|
}
|
|
|
|
var xlMeta xlMetaV2
|
|
var legacyPreserved bool
|
|
if len(dstBuf) > 0 {
|
|
if isXL2V1Format(dstBuf) {
|
|
if err = xlMeta.Load(dstBuf); err != nil {
|
|
logger.LogIf(ctx, err)
|
|
// Data appears corrupt. Drop data.
|
|
xlMeta = xlMetaV2{}
|
|
}
|
|
} else {
|
|
// This code-path is to preserve the legacy data.
|
|
xlMetaLegacy := &xlMetaV1Object{}
|
|
json := jsoniter.ConfigCompatibleWithStandardLibrary
|
|
if err := json.Unmarshal(dstBuf, xlMetaLegacy); err != nil {
|
|
logger.LogIf(ctx, err)
|
|
// Data appears corrupt. Drop data.
|
|
} else {
|
|
xlMetaLegacy.DataDir = legacyDataDir
|
|
if err = xlMeta.AddLegacy(xlMetaLegacy); err != nil {
|
|
logger.LogIf(ctx, err)
|
|
}
|
|
legacyPreserved = true
|
|
}
|
|
}
|
|
} else {
|
|
s.RLock()
|
|
formatLegacy := s.formatLegacy
|
|
s.RUnlock()
|
|
// It is possible that some drives may not have `xl.meta` file
|
|
// in such scenarios verify if atleast `part.1` files exist
|
|
// to verify for legacy version.
|
|
if formatLegacy {
|
|
// We only need this code if we are moving
|
|
// from `xl.json` to `xl.meta`, we can avoid
|
|
// one extra readdir operation here for all
|
|
// new deployments.
|
|
currentDataPath := pathJoin(dstVolumeDir, dstPath)
|
|
entries, err := readDirN(currentDataPath, 1)
|
|
if err != nil && err != errFileNotFound {
|
|
return 0, osErrToFileErr(err)
|
|
}
|
|
for _, entry := range entries {
|
|
if entry == xlStorageFormatFile || strings.HasSuffix(entry, slashSeparator) {
|
|
continue
|
|
}
|
|
if strings.HasPrefix(entry, "part.") {
|
|
legacyPreserved = true
|
|
break
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
legacyDataPath := pathJoin(dstVolumeDir, dstPath, legacyDataDir)
|
|
if legacyPreserved {
|
|
// Preserve all the legacy data, could be slow, but at max there can be 10,000 parts.
|
|
currentDataPath := pathJoin(dstVolumeDir, dstPath)
|
|
entries, err := readDir(currentDataPath)
|
|
if err != nil {
|
|
return 0, osErrToFileErr(err)
|
|
}
|
|
|
|
// legacy data dir means its old content, honor system umask.
|
|
if err = mkdirAll(legacyDataPath, 0o777); err != nil {
|
|
// any failed mkdir-calls delete them.
|
|
s.deleteFile(dstVolumeDir, legacyDataPath, true, false)
|
|
return 0, osErrToFileErr(err)
|
|
}
|
|
|
|
for _, entry := range entries {
|
|
// Skip xl.meta renames further, also ignore any directories such as `legacyDataDir`
|
|
if entry == xlStorageFormatFile || strings.HasSuffix(entry, slashSeparator) {
|
|
continue
|
|
}
|
|
|
|
if err = Rename(pathJoin(currentDataPath, entry), pathJoin(legacyDataPath, entry)); err != nil {
|
|
// Any failed rename calls un-roll previous transaction.
|
|
s.deleteFile(dstVolumeDir, legacyDataPath, true, false)
|
|
|
|
return 0, osErrToFileErr(err)
|
|
}
|
|
}
|
|
}
|
|
|
|
var oldDstDataPath, reqVID string
|
|
|
|
if fi.VersionID == "" {
|
|
reqVID = nullVersionID
|
|
} else {
|
|
reqVID = fi.VersionID
|
|
}
|
|
|
|
// Replace the data of null version or any other existing version-id
|
|
ofi, err := xlMeta.ToFileInfo(dstVolume, dstPath, reqVID, false)
|
|
if err == nil && !ofi.Deleted {
|
|
if xlMeta.SharedDataDirCountStr(reqVID, ofi.DataDir) == 0 {
|
|
// Purge the destination path as we are not preserving anything
|
|
// versioned object was not requested.
|
|
oldDstDataPath = pathJoin(dstVolumeDir, dstPath, ofi.DataDir)
|
|
// if old destination path is same as new destination path
|
|
// there is nothing to purge, this is true in case of healing
|
|
// avoid setting oldDstDataPath at that point.
|
|
if oldDstDataPath == dstDataPath {
|
|
oldDstDataPath = ""
|
|
} else {
|
|
xlMeta.data.remove(reqVID, ofi.DataDir)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Empty fi.VersionID indicates that versioning is either
|
|
// suspended or disabled on this bucket. RenameData will replace
|
|
// the 'null' version. We add a free-version to track its tiered
|
|
// content for asynchronous deletion.
|
|
if fi.VersionID == "" && !fi.IsRestoreObjReq() {
|
|
// Note: Restore object request reuses PutObject/Multipart
|
|
// upload to copy back its data from the remote tier. This
|
|
// doesn't replace the existing version, so we don't need to add
|
|
// a free-version.
|
|
xlMeta.AddFreeVersion(fi)
|
|
}
|
|
|
|
// indicates if RenameData() is called by healing.
|
|
// healing doesn't preserve the dataDir as 'legacy'
|
|
healing := fi.XLV1 && fi.DataDir != legacyDataDir
|
|
|
|
if err = xlMeta.AddVersion(fi); err != nil {
|
|
if legacyPreserved {
|
|
// Any failed rename calls un-roll previous transaction.
|
|
s.deleteFile(dstVolumeDir, legacyDataPath, true, false)
|
|
}
|
|
return 0, err
|
|
}
|
|
|
|
var sbuf bytes.Buffer
|
|
for _, ver := range xlMeta.versions {
|
|
sbuf.Write(ver.header.Signature[:])
|
|
}
|
|
sign = xxh3.Hash(sbuf.Bytes())
|
|
|
|
dstBuf, err = xlMeta.AppendTo(metaDataPoolGet())
|
|
defer metaDataPoolPut(dstBuf)
|
|
if err != nil {
|
|
logger.LogIf(ctx, err)
|
|
if legacyPreserved {
|
|
// Any failed rename calls un-roll previous transaction.
|
|
s.deleteFile(dstVolumeDir, legacyDataPath, true, false)
|
|
}
|
|
return 0, errFileCorrupt
|
|
}
|
|
|
|
if srcDataPath != "" {
|
|
if err = s.WriteAll(ctx, srcVolume, pathJoin(srcPath, xlStorageFormatFile), dstBuf); err != nil {
|
|
if legacyPreserved {
|
|
// Any failed rename calls un-roll previous transaction.
|
|
s.deleteFile(dstVolumeDir, legacyDataPath, true, false)
|
|
}
|
|
return 0, osErrToFileErr(err)
|
|
}
|
|
diskHealthCheckOK(ctx, err)
|
|
|
|
// renameAll only for objects that have xl.meta not saved inline.
|
|
if len(fi.Data) == 0 && fi.Size > 0 {
|
|
s.moveToTrash(dstDataPath, true, false)
|
|
if healing {
|
|
// If we are healing we should purge any legacyDataPath content,
|
|
// that was previously preserved during PutObject() call
|
|
// on a versioned bucket.
|
|
s.moveToTrash(legacyDataPath, true, false)
|
|
}
|
|
if err = renameAll(srcDataPath, dstDataPath); err != nil {
|
|
if legacyPreserved {
|
|
// Any failed rename calls un-roll previous transaction.
|
|
s.deleteFile(dstVolumeDir, legacyDataPath, true, false)
|
|
}
|
|
s.deleteFile(dstVolumeDir, dstDataPath, false, false)
|
|
return 0, osErrToFileErr(err)
|
|
}
|
|
}
|
|
|
|
// Commit meta-file
|
|
if err = renameAll(srcFilePath, dstFilePath); err != nil {
|
|
if legacyPreserved {
|
|
// Any failed rename calls un-roll previous transaction.
|
|
s.deleteFile(dstVolumeDir, legacyDataPath, true, false)
|
|
}
|
|
s.deleteFile(dstVolumeDir, dstFilePath, false, false)
|
|
return 0, osErrToFileErr(err)
|
|
}
|
|
|
|
// additionally only purge older data at the end of the transaction of new data-dir
|
|
// movement, this is to ensure that previous data references can co-exist for
|
|
// any recoverability.
|
|
if oldDstDataPath != "" {
|
|
s.moveToTrash(oldDstDataPath, true, false)
|
|
}
|
|
} else {
|
|
// Write meta-file directly, no data
|
|
if err = s.WriteAll(ctx, dstVolume, pathJoin(dstPath, xlStorageFormatFile), dstBuf); err != nil {
|
|
if legacyPreserved {
|
|
// Any failed rename calls un-roll previous transaction.
|
|
s.deleteFile(dstVolumeDir, legacyDataPath, true, false)
|
|
}
|
|
s.deleteFile(dstVolumeDir, dstFilePath, false, false)
|
|
return 0, err
|
|
}
|
|
}
|
|
|
|
// srcFilePath is always in minioMetaTmpBucket, an attempt to
|
|
// remove the temporary folder is enough since at this point
|
|
// ideally all transaction should be complete.
|
|
|
|
Remove(pathutil.Dir(srcFilePath))
|
|
return sign, nil
|
|
}
|
|
|
|
// RenameFile - rename source path to destination path atomically.
|
|
func (s *xlStorage) RenameFile(ctx context.Context, srcVolume, srcPath, dstVolume, dstPath string) (err error) {
|
|
srcVolumeDir, err := s.getVolDir(srcVolume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
dstVolumeDir, err := s.getVolDir(dstVolume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if !skipAccessChecks(srcVolume) {
|
|
// Stat a volume entry.
|
|
if err = Access(srcVolumeDir); err != nil {
|
|
if osIsNotExist(err) {
|
|
return errVolumeNotFound
|
|
} else if isSysErrIO(err) {
|
|
return errFaultyDisk
|
|
}
|
|
return err
|
|
}
|
|
}
|
|
if !skipAccessChecks(dstVolume) {
|
|
if err = Access(dstVolumeDir); err != nil {
|
|
if osIsNotExist(err) {
|
|
return errVolumeNotFound
|
|
} else if isSysErrIO(err) {
|
|
return errFaultyDisk
|
|
}
|
|
return err
|
|
}
|
|
}
|
|
srcIsDir := HasSuffix(srcPath, SlashSeparator)
|
|
dstIsDir := HasSuffix(dstPath, SlashSeparator)
|
|
// Either src and dst have to be directories or files, else return error.
|
|
if !(srcIsDir && dstIsDir || !srcIsDir && !dstIsDir) {
|
|
return errFileAccessDenied
|
|
}
|
|
srcFilePath := pathutil.Join(srcVolumeDir, srcPath)
|
|
if err = checkPathLength(srcFilePath); err != nil {
|
|
return err
|
|
}
|
|
dstFilePath := pathutil.Join(dstVolumeDir, dstPath)
|
|
if err = checkPathLength(dstFilePath); err != nil {
|
|
return err
|
|
}
|
|
if srcIsDir {
|
|
// If source is a directory, we expect the destination to be non-existent but we
|
|
// we still need to allow overwriting an empty directory since it represents
|
|
// an object empty directory.
|
|
dirInfo, err := Lstat(dstFilePath)
|
|
if isSysErrIO(err) {
|
|
return errFaultyDisk
|
|
}
|
|
if err != nil {
|
|
if !osIsNotExist(err) {
|
|
return err
|
|
}
|
|
} else {
|
|
if !dirInfo.IsDir() {
|
|
return errFileAccessDenied
|
|
}
|
|
if err = Remove(dstFilePath); err != nil {
|
|
if isSysErrNotEmpty(err) || isSysErrNotDir(err) {
|
|
return errFileAccessDenied
|
|
} else if isSysErrIO(err) {
|
|
return errFaultyDisk
|
|
}
|
|
return err
|
|
}
|
|
}
|
|
}
|
|
|
|
if err = renameAll(srcFilePath, dstFilePath); err != nil {
|
|
if isSysErrNotEmpty(err) || isSysErrNotDir(err) {
|
|
return errFileAccessDenied
|
|
}
|
|
return osErrToFileErr(err)
|
|
}
|
|
|
|
// Remove parent dir of the source file if empty
|
|
parentDir := pathutil.Dir(srcFilePath)
|
|
s.deleteFile(srcVolumeDir, parentDir, false, false)
|
|
|
|
return nil
|
|
}
|
|
|
|
func (s *xlStorage) bitrotVerify(ctx context.Context, partPath string, partSize int64, algo BitrotAlgorithm, sum []byte, shardSize int64) error {
|
|
// Open the file for reading.
|
|
file, err := OpenFile(partPath, readMode, 0o666)
|
|
if err != nil {
|
|
return osErrToFileErr(err)
|
|
}
|
|
|
|
// Close the file descriptor.
|
|
defer file.Close()
|
|
fi, err := file.Stat()
|
|
if err != nil {
|
|
// Unable to stat on the file, return an expected error
|
|
// for healing code to fix this file.
|
|
return err
|
|
}
|
|
return bitrotVerify(diskHealthReader(ctx, file), fi.Size(), partSize, algo, sum, shardSize)
|
|
}
|
|
|
|
func (s *xlStorage) VerifyFile(ctx context.Context, volume, path string, fi FileInfo) (err error) {
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Stat a volume entry.
|
|
if err = Access(volumeDir); err != nil {
|
|
if osIsNotExist(err) {
|
|
return errVolumeNotFound
|
|
} else if isSysErrIO(err) {
|
|
return errFaultyDisk
|
|
} else if osIsPermission(err) {
|
|
return errVolumeAccessDenied
|
|
}
|
|
return err
|
|
}
|
|
|
|
erasure := fi.Erasure
|
|
for _, part := range fi.Parts {
|
|
checksumInfo := erasure.GetChecksumInfo(part.Number)
|
|
partPath := pathJoin(volumeDir, path, fi.DataDir, fmt.Sprintf("part.%d", part.Number))
|
|
if err := s.bitrotVerify(ctx, partPath,
|
|
erasure.ShardFileSize(part.Size),
|
|
checksumInfo.Algorithm,
|
|
checksumInfo.Hash, erasure.ShardSize()); err != nil {
|
|
if !IsErr(err, []error{
|
|
errFileNotFound,
|
|
errVolumeNotFound,
|
|
errFileCorrupt,
|
|
}...) {
|
|
logger.GetReqInfo(ctx).AppendTags("disk", s.String())
|
|
logger.LogIf(ctx, err)
|
|
}
|
|
return err
|
|
}
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// ReadMultiple will read multiple files and send each back as response.
|
|
// Files are read and returned in the given order.
|
|
// The resp channel is closed before the call returns.
|
|
// Only a canceled context will return an error.
|
|
func (s *xlStorage) ReadMultiple(ctx context.Context, req ReadMultipleReq, resp chan<- ReadMultipleResp) error {
|
|
defer close(resp)
|
|
|
|
volumeDir := pathJoin(s.diskPath, req.Bucket)
|
|
found := 0
|
|
for _, f := range req.Files {
|
|
if contextCanceled(ctx) {
|
|
return ctx.Err()
|
|
}
|
|
r := ReadMultipleResp{
|
|
Bucket: req.Bucket,
|
|
Prefix: req.Prefix,
|
|
File: f,
|
|
}
|
|
var data []byte
|
|
var mt time.Time
|
|
var err error
|
|
fullPath := pathJoin(volumeDir, req.Prefix, f)
|
|
if req.MetadataOnly {
|
|
data, mt, err = s.readMetadataWithDMTime(ctx, fullPath)
|
|
} else {
|
|
data, mt, err = s.readAllData(ctx, volumeDir, fullPath)
|
|
}
|
|
|
|
if err != nil {
|
|
if !IsErr(err, errFileNotFound, errVolumeNotFound) {
|
|
r.Exists = true
|
|
r.Error = err.Error()
|
|
}
|
|
select {
|
|
case <-ctx.Done():
|
|
return ctx.Err()
|
|
case resp <- r:
|
|
}
|
|
if req.AbortOn404 && !r.Exists {
|
|
// We stop at first file not found.
|
|
// We have already reported the error, return nil.
|
|
return nil
|
|
}
|
|
continue
|
|
}
|
|
diskHealthCheckOK(ctx, nil)
|
|
if req.MaxSize > 0 && int64(len(data)) > req.MaxSize {
|
|
r.Exists = true
|
|
r.Error = fmt.Sprintf("max size (%d) exceeded: %d", req.MaxSize, len(data))
|
|
resp <- r
|
|
continue
|
|
}
|
|
found++
|
|
r.Exists = true
|
|
r.Data = data
|
|
r.Modtime = mt
|
|
resp <- r
|
|
if req.MaxResults > 0 && found >= req.MaxResults {
|
|
return nil
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (s *xlStorage) StatInfoFile(ctx context.Context, volume, path string, glob bool) (stat []StatInfo, err error) {
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return stat, err
|
|
}
|
|
|
|
// Stat a volume entry.
|
|
if err = Access(volumeDir); err != nil {
|
|
if osIsNotExist(err) {
|
|
return stat, errVolumeNotFound
|
|
} else if isSysErrIO(err) {
|
|
return stat, errFaultyDisk
|
|
} else if osIsPermission(err) {
|
|
return stat, errVolumeAccessDenied
|
|
}
|
|
return stat, err
|
|
}
|
|
files := []string{pathJoin(volumeDir, path)}
|
|
if glob {
|
|
files, err = filepathx.Glob(filepath.Join(volumeDir, path))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
for _, filePath := range files {
|
|
if err := checkPathLength(filePath); err != nil {
|
|
return stat, err
|
|
}
|
|
st, _ := Lstat(filePath)
|
|
if st == nil {
|
|
return stat, errPathNotFound
|
|
}
|
|
name, err := filepath.Rel(volumeDir, filePath)
|
|
if err != nil {
|
|
name = filePath
|
|
}
|
|
stat = append(stat, StatInfo{
|
|
Name: filepath.ToSlash(name),
|
|
Size: st.Size(),
|
|
Dir: st.IsDir(),
|
|
Mode: uint32(st.Mode()),
|
|
ModTime: st.ModTime(),
|
|
})
|
|
}
|
|
return stat, nil
|
|
}
|
|
|
|
// CleanAbandonedData will read metadata of the object on disk
|
|
// and delete any data directories and inline data that isn't referenced in metadata.
|
|
// Metadata itself is not modified, only inline data.
|
|
func (s *xlStorage) CleanAbandonedData(ctx context.Context, volume string, path string) error {
|
|
if volume == "" || path == "" {
|
|
return nil // Ignore
|
|
}
|
|
|
|
volumeDir, err := s.getVolDir(volume)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
baseDir := pathJoin(volumeDir, path+slashSeparator)
|
|
metaPath := pathutil.Join(baseDir, xlStorageFormatFile)
|
|
buf, _, err := s.readAllData(ctx, volumeDir, metaPath)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer metaDataPoolPut(buf)
|
|
|
|
if !isXL2V1Format(buf) {
|
|
return nil
|
|
}
|
|
var xl xlMetaV2
|
|
err = xl.LoadOrConvert(buf)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
foundDirs := make(map[string]struct{}, len(xl.versions))
|
|
err = readDirFn(baseDir, func(name string, typ os.FileMode) error {
|
|
if !typ.IsDir() {
|
|
return nil
|
|
}
|
|
// See if directory has a UUID name.
|
|
base := filepath.Base(name)
|
|
_, err := uuid.Parse(base)
|
|
if err == nil {
|
|
foundDirs[base] = struct{}{}
|
|
}
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return err
|
|
}
|
|
wantDirs, err := xl.getDataDirs()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Delete all directories we expect to be there.
|
|
for _, dir := range wantDirs {
|
|
delete(foundDirs, dir)
|
|
}
|
|
|
|
// Delete excessive directories.
|
|
// Do not abort on context errors.
|
|
for dir := range foundDirs {
|
|
toRemove := pathJoin(volumeDir, path, dir+SlashSeparator)
|
|
err := s.deleteFile(volumeDir, toRemove, true, true)
|
|
diskHealthCheckOK(ctx, err)
|
|
}
|
|
|
|
// Do the same for inline data
|
|
dirs, err := xl.data.list()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// Clear and repopulate
|
|
for k := range foundDirs {
|
|
delete(foundDirs, k)
|
|
}
|
|
// Populate into map
|
|
for _, k := range dirs {
|
|
foundDirs[k] = struct{}{}
|
|
}
|
|
// Delete all directories we expect to be there.
|
|
for _, dir := range wantDirs {
|
|
delete(foundDirs, dir)
|
|
}
|
|
|
|
// Delete excessive inline entries.
|
|
if len(foundDirs) > 0 {
|
|
// Convert to slice.
|
|
dirs = dirs[:0]
|
|
for dir := range foundDirs {
|
|
dirs = append(dirs, dir)
|
|
}
|
|
if xl.data.remove(dirs...) {
|
|
newBuf, err := xl.AppendTo(metaDataPoolGet())
|
|
if err == nil {
|
|
defer metaDataPoolPut(newBuf)
|
|
return s.writeAll(ctx, volume, pathJoin(path, xlStorageFormatFile), buf, false)
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|