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2b4eb87d77
further optimization to ensure that good disks are always used for listing, other than healing we only use disks that are maximally used.
82 lines
2.2 KiB
Go
82 lines
2.2 KiB
Go
// +build linux,s390x
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/*
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* MinIO Cloud Storage, (C) 2020 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package disk
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import (
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"fmt"
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"strconv"
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"syscall"
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)
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// fsType2StringMap - list of filesystems supported on linux
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var fsType2StringMap = map[string]string{
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"1021994": "TMPFS",
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"137d": "EXT",
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"4244": "HFS",
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"4d44": "MSDOS",
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"52654973": "REISERFS",
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"5346544e": "NTFS",
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"58465342": "XFS",
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"61756673": "AUFS",
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"6969": "NFS",
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"ef51": "EXT2OLD",
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"ef53": "EXT4",
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"f15f": "ecryptfs",
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"794c7630": "overlayfs",
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"2fc12fc1": "zfs",
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"ff534d42": "cifs",
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"53464846": "wslfs",
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}
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// getFSType returns the filesystem type of the underlying mounted filesystem
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func getFSType(ftype uint32) string {
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fsTypeHex := strconv.FormatUint(uint64(ftype), 16)
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fsTypeString, ok := fsType2StringMap[fsTypeHex]
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if !ok {
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return "UNKNOWN"
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}
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return fsTypeString
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}
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// GetInfo returns total and free bytes available in a directory, e.g. `/`.
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func GetInfo(path string) (info Info, err error) {
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s := syscall.Statfs_t{}
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err = syscall.Statfs(path, &s)
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if err != nil {
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return Info{}, err
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}
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reservedBlocks := s.Bfree - s.Bavail
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info = Info{
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Total: uint64(s.Frsize) * (s.Blocks - reservedBlocks),
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Free: uint64(s.Frsize) * s.Bavail,
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Files: s.Files,
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Ffree: s.Ffree,
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FSType: getFSType(s.Type),
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}
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// Check for overflows.
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// https://github.com/minio/minio/issues/8035
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// XFS can show wrong values at times error out
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// in such scenarios.
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if info.Free > info.Total {
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return info, fmt.Errorf("detected free space (%d) > total disk space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path)
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}
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info.Used = info.Total - info.Free
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return info, nil
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}
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