mirror of https://github.com/minio/minio.git
671 lines
19 KiB
Go
671 lines
19 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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"os"
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"path"
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"reflect"
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"runtime"
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"testing"
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"time"
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"github.com/dustin/go-humanize"
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"github.com/minio/madmin-go"
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)
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// Tests both object and bucket healing.
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func TestHealing(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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obj, fsDirs, err := prepareErasure16(ctx)
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if err != nil {
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t.Fatal(err)
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}
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defer obj.Shutdown(context.Background())
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defer removeRoots(fsDirs)
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z := obj.(*erasureServerPools)
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er := z.serverPools[0].sets[0]
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// Create "bucket"
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err = obj.MakeBucketWithLocation(ctx, "bucket", BucketOptions{})
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if err != nil {
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t.Fatal(err)
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}
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bucket := "bucket"
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object := "object"
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data := make([]byte, 1*humanize.MiByte)
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length := int64(len(data))
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_, err = rand.Read(data)
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if err != nil {
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t.Fatal(err)
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}
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_, err = obj.PutObject(ctx, bucket, object, mustGetPutObjReader(t, bytes.NewReader(data), length, "", ""), ObjectOptions{})
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if err != nil {
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t.Fatal(err)
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}
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disk := er.getDisks()[0]
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fileInfoPreHeal, err := disk.ReadVersion(context.Background(), bucket, object, "", false)
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if err != nil {
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t.Fatal(err)
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}
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// Remove the object - to simulate the case where the disk was down when the object
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// was created.
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err = removeAll(pathJoin(disk.String(), bucket, object))
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if err != nil {
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t.Fatal(err)
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}
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_, err = er.HealObject(ctx, bucket, object, "", madmin.HealOpts{ScanMode: madmin.HealNormalScan})
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if err != nil {
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t.Fatal(err)
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}
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fileInfoPostHeal, err := disk.ReadVersion(context.Background(), bucket, object, "", false)
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if err != nil {
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t.Fatal(err)
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}
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// After heal the meta file should be as expected.
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if !reflect.DeepEqual(fileInfoPreHeal, fileInfoPostHeal) {
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t.Fatal("HealObject failed")
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}
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err = os.RemoveAll(path.Join(fsDirs[0], bucket, object, "er.meta"))
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if err != nil {
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t.Fatal(err)
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}
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// Write er.meta with different modtime to simulate the case where a disk had
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// gone down when an object was replaced by a new object.
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fileInfoOutDated := fileInfoPreHeal
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fileInfoOutDated.ModTime = time.Now()
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err = disk.WriteMetadata(context.Background(), bucket, object, fileInfoOutDated)
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if err != nil {
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t.Fatal(err)
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}
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_, err = er.HealObject(ctx, bucket, object, "", madmin.HealOpts{ScanMode: madmin.HealDeepScan})
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if err != nil {
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t.Fatal(err)
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}
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fileInfoPostHeal, err = disk.ReadVersion(context.Background(), bucket, object, "", false)
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if err != nil {
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t.Fatal(err)
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}
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// After heal the meta file should be as expected.
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if !reflect.DeepEqual(fileInfoPreHeal, fileInfoPostHeal) {
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t.Fatal("HealObject failed")
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}
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// Remove the bucket - to simulate the case where bucket was
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// created when the disk was down.
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err = os.RemoveAll(path.Join(fsDirs[0], bucket))
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if err != nil {
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t.Fatal(err)
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}
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// This would create the bucket.
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_, err = er.HealBucket(ctx, bucket, madmin.HealOpts{
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DryRun: false,
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Remove: false,
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})
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if err != nil {
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t.Fatal(err)
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}
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// Stat the bucket to make sure that it was created.
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_, err = er.getDisks()[0].StatVol(context.Background(), bucket)
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if err != nil {
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t.Fatal(err)
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}
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}
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func TestHealingDanglingObject(t *testing.T) {
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if runtime.GOOS == "windows" {
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t.Skip()
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}
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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resetGlobalHealState()
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defer resetGlobalHealState()
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nDisks := 16
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fsDirs, err := getRandomDisks(nDisks)
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if err != nil {
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t.Fatal(err)
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}
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//defer removeRoots(fsDirs)
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// Everything is fine, should return nil
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objLayer, disks, err := initObjectLayer(ctx, mustGetPoolEndpoints(fsDirs...))
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if err != nil {
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t.Fatal(err)
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}
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bucket := getRandomBucketName()
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object := getRandomObjectName()
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data := bytes.Repeat([]byte("a"), 128*1024)
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err = objLayer.MakeBucketWithLocation(ctx, bucket, BucketOptions{})
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if err != nil {
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t.Fatalf("Failed to make a bucket - %v", err)
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}
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// Enable versioning.
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globalBucketMetadataSys.Update(bucket, bucketVersioningConfig, []byte(`<VersioningConfiguration><Status>Enabled</Status></VersioningConfiguration>`))
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_, err = objLayer.PutObject(ctx, bucket, object, mustGetPutObjReader(t, bytes.NewReader(data), int64(len(data)), "", ""), ObjectOptions{
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Versioned: true,
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})
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if err != nil {
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t.Fatal(err)
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}
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for _, fsDir := range fsDirs[:4] {
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if err = os.Chmod(fsDir, 0400); err != nil {
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t.Fatal(err)
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}
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}
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// Create delete marker under quorum.
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objInfo, err := objLayer.DeleteObject(ctx, bucket, object, ObjectOptions{Versioned: true})
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if err != nil {
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t.Fatal(err)
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}
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for _, fsDir := range fsDirs[:4] {
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if err = os.Chmod(fsDir, 0755); err != nil {
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t.Fatal(err)
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}
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}
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fileInfoPreHeal, err := disks[0].ReadVersion(context.Background(), bucket, object, "", false)
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if err != nil {
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t.Fatal(err)
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}
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if fileInfoPreHeal.NumVersions != 1 {
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t.Fatalf("Expected versions 1, got %d", fileInfoPreHeal.NumVersions)
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}
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if err = objLayer.HealObjects(ctx, bucket, "", madmin.HealOpts{Remove: true},
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func(bucket, object, vid string) error {
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_, err := objLayer.HealObject(ctx, bucket, object, vid, madmin.HealOpts{Remove: true})
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return err
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}); err != nil {
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t.Fatal(err)
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}
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fileInfoPostHeal, err := disks[0].ReadVersion(context.Background(), bucket, object, "", false)
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if err != nil {
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t.Fatal(err)
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}
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if fileInfoPostHeal.NumVersions != 2 {
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t.Fatalf("Expected versions 2, got %d", fileInfoPreHeal.NumVersions)
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}
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if objInfo.DeleteMarker {
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if _, err = objLayer.DeleteObject(ctx, bucket, object, ObjectOptions{
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Versioned: true,
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VersionID: objInfo.VersionID,
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}); err != nil {
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t.Fatal(err)
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}
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}
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for _, fsDir := range fsDirs[:4] {
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if err = os.Chmod(fsDir, 0400); err != nil {
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t.Fatal(err)
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}
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}
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rd := mustGetPutObjReader(t, bytes.NewReader(data), int64(len(data)), "", "")
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_, err = objLayer.PutObject(ctx, bucket, object, rd, ObjectOptions{
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Versioned: true,
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})
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if err != nil {
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t.Fatal(err)
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}
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for _, fsDir := range fsDirs[:4] {
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if err = os.Chmod(fsDir, 0755); err != nil {
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t.Fatal(err)
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}
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}
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fileInfoPreHeal, err = disks[0].ReadVersion(context.Background(), bucket, object, "", false)
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if err != nil {
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t.Fatal(err)
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}
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if fileInfoPreHeal.NumVersions != 1 {
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t.Fatalf("Expected versions 1, got %d", fileInfoPreHeal.NumVersions)
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}
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if err = objLayer.HealObjects(ctx, bucket, "", madmin.HealOpts{Remove: true},
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func(bucket, object, vid string) error {
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_, err := objLayer.HealObject(ctx, bucket, object, vid, madmin.HealOpts{Remove: true})
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return err
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}); err != nil {
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t.Fatal(err)
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}
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fileInfoPostHeal, err = disks[0].ReadVersion(context.Background(), bucket, object, "", false)
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if err != nil {
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t.Fatal(err)
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}
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if fileInfoPostHeal.NumVersions != 2 {
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t.Fatalf("Expected versions 2, got %d", fileInfoPreHeal.NumVersions)
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}
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rd = mustGetPutObjReader(t, bytes.NewReader(data), int64(len(data)), "", "")
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objInfo, err = objLayer.PutObject(ctx, bucket, object, rd, ObjectOptions{
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Versioned: true,
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})
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if err != nil {
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t.Fatal(err)
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}
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for _, fsDir := range fsDirs[:4] {
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if err = os.Chmod(fsDir, 0400); err != nil {
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t.Fatal(err)
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}
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}
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// Create delete marker under quorum.
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_, err = objLayer.DeleteObject(ctx, bucket, object, ObjectOptions{
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Versioned: true,
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VersionID: objInfo.VersionID,
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})
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if err != nil {
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t.Fatal(err)
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}
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for _, fsDir := range fsDirs[:4] {
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if err = os.Chmod(fsDir, 0755); err != nil {
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t.Fatal(err)
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}
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}
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fileInfoPreHeal, err = disks[0].ReadVersion(context.Background(), bucket, object, "", false)
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if err != nil {
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t.Fatal(err)
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}
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if fileInfoPreHeal.NumVersions != 3 {
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t.Fatalf("Expected versions 3, got %d", fileInfoPreHeal.NumVersions)
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}
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if err = objLayer.HealObjects(ctx, bucket, "", madmin.HealOpts{Remove: true},
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func(bucket, object, vid string) error {
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_, err := objLayer.HealObject(ctx, bucket, object, vid, madmin.HealOpts{Remove: true})
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return err
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}); err != nil {
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t.Fatal(err)
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}
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fileInfoPostHeal, err = disks[0].ReadVersion(context.Background(), bucket, object, "", false)
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if err != nil {
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t.Fatal(err)
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}
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if fileInfoPostHeal.NumVersions != 2 {
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t.Fatalf("Expected versions 2, got %d", fileInfoPreHeal.NumVersions)
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}
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}
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func TestHealObjectCorrupted(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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resetGlobalHealState()
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defer resetGlobalHealState()
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nDisks := 16
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fsDirs, err := getRandomDisks(nDisks)
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if err != nil {
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t.Fatal(err)
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}
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defer removeRoots(fsDirs)
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// Everything is fine, should return nil
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objLayer, _, err := initObjectLayer(ctx, mustGetPoolEndpoints(fsDirs...))
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if err != nil {
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t.Fatal(err)
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}
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bucket := getRandomBucketName()
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object := getRandomObjectName()
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data := bytes.Repeat([]byte("a"), 5*1024*1024)
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var opts ObjectOptions
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err = objLayer.MakeBucketWithLocation(ctx, bucket, BucketOptions{})
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if err != nil {
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t.Fatalf("Failed to make a bucket - %v", err)
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}
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// Create an object with multiple parts uploaded in decreasing
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// part number.
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uploadID, err := objLayer.NewMultipartUpload(ctx, bucket, object, opts)
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if err != nil {
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t.Fatalf("Failed to create a multipart upload - %v", err)
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}
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var uploadedParts []CompletePart
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for _, partID := range []int{2, 1} {
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pInfo, err1 := objLayer.PutObjectPart(ctx, bucket, object, uploadID, partID, mustGetPutObjReader(t, bytes.NewReader(data), int64(len(data)), "", ""), opts)
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if err1 != nil {
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t.Fatalf("Failed to upload a part - %v", err1)
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}
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uploadedParts = append(uploadedParts, CompletePart{
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PartNumber: pInfo.PartNumber,
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ETag: pInfo.ETag,
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})
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}
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_, err = objLayer.CompleteMultipartUpload(ctx, bucket, object, uploadID, uploadedParts, ObjectOptions{})
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if err != nil {
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t.Fatalf("Failed to complete multipart upload - %v", err)
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}
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// Test 1: Remove the object backend files from the first disk.
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z := objLayer.(*erasureServerPools)
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er := z.serverPools[0].sets[0]
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erasureDisks := er.getDisks()
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firstDisk := erasureDisks[0]
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err = firstDisk.Delete(context.Background(), bucket, pathJoin(object, xlStorageFormatFile), false)
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if err != nil {
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t.Fatalf("Failed to delete a file - %v", err)
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}
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_, err = objLayer.HealObject(ctx, bucket, object, "", madmin.HealOpts{ScanMode: madmin.HealNormalScan})
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if err != nil {
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t.Fatalf("Failed to heal object - %v", err)
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}
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fileInfos, errs := readAllFileInfo(ctx, erasureDisks, bucket, object, "", false)
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fi, err := getLatestFileInfo(ctx, fileInfos, errs)
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if err != nil {
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t.Fatalf("Failed to getLatestFileInfo - %v", err)
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}
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if _, err = firstDisk.StatInfoFile(context.Background(), bucket, object+"/"+xlStorageFormatFile, false); err != nil {
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t.Errorf("Expected er.meta file to be present but stat failed - %v", err)
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}
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err = firstDisk.Delete(context.Background(), bucket, pathJoin(object, fi.DataDir, "part.1"), false)
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if err != nil {
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t.Errorf("Failure during deleting part.1 - %v", err)
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}
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err = firstDisk.WriteAll(context.Background(), bucket, pathJoin(object, fi.DataDir, "part.1"), []byte{})
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if err != nil {
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t.Errorf("Failure during creating part.1 - %v", err)
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}
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_, err = objLayer.HealObject(ctx, bucket, object, "", madmin.HealOpts{DryRun: false, Remove: true, ScanMode: madmin.HealDeepScan})
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if err != nil {
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t.Errorf("Expected nil but received %v", err)
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}
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fileInfos, errs = readAllFileInfo(ctx, erasureDisks, bucket, object, "", false)
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nfi, err := getLatestFileInfo(ctx, fileInfos, errs)
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if err != nil {
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t.Fatalf("Failed to getLatestFileInfo - %v", err)
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}
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if !reflect.DeepEqual(fi, nfi) {
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t.Fatalf("FileInfo not equal after healing")
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}
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err = firstDisk.Delete(context.Background(), bucket, pathJoin(object, fi.DataDir, "part.1"), false)
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if err != nil {
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t.Errorf("Failure during deleting part.1 - %v", err)
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}
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bdata := bytes.Repeat([]byte("b"), int(nfi.Size))
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err = firstDisk.WriteAll(context.Background(), bucket, pathJoin(object, fi.DataDir, "part.1"), bdata)
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if err != nil {
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t.Errorf("Failure during creating part.1 - %v", err)
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}
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_, err = objLayer.HealObject(ctx, bucket, object, "", madmin.HealOpts{DryRun: false, Remove: true, ScanMode: madmin.HealDeepScan})
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if err != nil {
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t.Errorf("Expected nil but received %v", err)
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}
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fileInfos, errs = readAllFileInfo(ctx, erasureDisks, bucket, object, "", false)
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nfi, err = getLatestFileInfo(ctx, fileInfos, errs)
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if err != nil {
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t.Fatalf("Failed to getLatestFileInfo - %v", err)
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}
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if !reflect.DeepEqual(fi, nfi) {
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t.Fatalf("FileInfo not equal after healing")
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}
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// Test 4: checks if HealObject returns an error when xl.meta is not found
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// in more than read quorum number of disks, to create a corrupted situation.
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for i := 0; i <= nfi.Erasure.DataBlocks; i++ {
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erasureDisks[i].Delete(context.Background(), bucket, pathJoin(object, xlStorageFormatFile), false)
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}
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// Try healing now, expect to receive errFileNotFound.
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_, err = objLayer.HealObject(ctx, bucket, object, "", madmin.HealOpts{DryRun: false, Remove: true, ScanMode: madmin.HealDeepScan})
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if err != nil {
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if _, ok := err.(ObjectNotFound); !ok {
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t.Errorf("Expect %v but received %v", ObjectNotFound{Bucket: bucket, Object: object}, err)
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}
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}
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// since majority of xl.meta's are not available, object should be successfully deleted.
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_, err = objLayer.GetObjectInfo(ctx, bucket, object, ObjectOptions{})
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if _, ok := err.(ObjectNotFound); !ok {
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t.Errorf("Expect %v but received %v", ObjectNotFound{Bucket: bucket, Object: object}, err)
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}
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}
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|
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// Tests healing of object.
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func TestHealObjectErasure(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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nDisks := 16
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fsDirs, err := getRandomDisks(nDisks)
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if err != nil {
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t.Fatal(err)
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}
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defer removeRoots(fsDirs)
|
|
|
|
// Everything is fine, should return nil
|
|
obj, _, err := initObjectLayer(ctx, mustGetPoolEndpoints(fsDirs...))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
bucket := "bucket"
|
|
object := "object"
|
|
data := bytes.Repeat([]byte("a"), 5*1024*1024)
|
|
var opts ObjectOptions
|
|
|
|
err = obj.MakeBucketWithLocation(ctx, bucket, BucketOptions{})
|
|
if err != nil {
|
|
t.Fatalf("Failed to make a bucket - %v", err)
|
|
}
|
|
|
|
// Create an object with multiple parts uploaded in decreasing
|
|
// part number.
|
|
uploadID, err := obj.NewMultipartUpload(ctx, bucket, object, opts)
|
|
if err != nil {
|
|
t.Fatalf("Failed to create a multipart upload - %v", err)
|
|
}
|
|
|
|
var uploadedParts []CompletePart
|
|
for _, partID := range []int{2, 1} {
|
|
pInfo, err1 := obj.PutObjectPart(ctx, bucket, object, uploadID, partID, mustGetPutObjReader(t, bytes.NewReader(data), int64(len(data)), "", ""), opts)
|
|
if err1 != nil {
|
|
t.Fatalf("Failed to upload a part - %v", err1)
|
|
}
|
|
uploadedParts = append(uploadedParts, CompletePart{
|
|
PartNumber: pInfo.PartNumber,
|
|
ETag: pInfo.ETag,
|
|
})
|
|
}
|
|
|
|
// Remove the object backend files from the first disk.
|
|
z := obj.(*erasureServerPools)
|
|
er := z.serverPools[0].sets[0]
|
|
firstDisk := er.getDisks()[0]
|
|
|
|
_, err = obj.CompleteMultipartUpload(ctx, bucket, object, uploadID, uploadedParts, ObjectOptions{})
|
|
if err != nil {
|
|
t.Fatalf("Failed to complete multipart upload - %v", err)
|
|
}
|
|
|
|
err = firstDisk.Delete(context.Background(), bucket, pathJoin(object, xlStorageFormatFile), false)
|
|
if err != nil {
|
|
t.Fatalf("Failed to delete a file - %v", err)
|
|
}
|
|
|
|
_, err = obj.HealObject(ctx, bucket, object, "", madmin.HealOpts{ScanMode: madmin.HealNormalScan})
|
|
if err != nil {
|
|
t.Fatalf("Failed to heal object - %v", err)
|
|
}
|
|
|
|
if _, err = firstDisk.StatInfoFile(context.Background(), bucket, object+"/"+xlStorageFormatFile, false); err != nil {
|
|
t.Errorf("Expected er.meta file to be present but stat failed - %v", err)
|
|
}
|
|
|
|
erasureDisks := er.getDisks()
|
|
z.serverPools[0].erasureDisksMu.Lock()
|
|
er.getDisks = func() []StorageAPI {
|
|
// Nil more than half the disks, to remove write quorum.
|
|
for i := 0; i <= len(erasureDisks)/2; i++ {
|
|
erasureDisks[i] = nil
|
|
}
|
|
return erasureDisks
|
|
}
|
|
z.serverPools[0].erasureDisksMu.Unlock()
|
|
|
|
// Try healing now, expect to receive errDiskNotFound.
|
|
_, err = obj.HealObject(ctx, bucket, object, "", madmin.HealOpts{ScanMode: madmin.HealDeepScan})
|
|
// since majority of er.meta's are not available, object quorum can't be read properly and error will be errErasureReadQuorum
|
|
if _, ok := err.(InsufficientReadQuorum); !ok {
|
|
t.Errorf("Expected %v but received %v", InsufficientReadQuorum{}, err)
|
|
}
|
|
}
|
|
|
|
// Tests healing of empty directories
|
|
func TestHealEmptyDirectoryErasure(t *testing.T) {
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
defer cancel()
|
|
|
|
nDisks := 16
|
|
fsDirs, err := getRandomDisks(nDisks)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer removeRoots(fsDirs)
|
|
|
|
// Everything is fine, should return nil
|
|
obj, _, err := initObjectLayer(ctx, mustGetPoolEndpoints(fsDirs...))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
bucket := "bucket"
|
|
object := "empty-dir/"
|
|
var opts ObjectOptions
|
|
|
|
err = obj.MakeBucketWithLocation(ctx, bucket, BucketOptions{})
|
|
if err != nil {
|
|
t.Fatalf("Failed to make a bucket - %v", err)
|
|
}
|
|
|
|
// Upload an empty directory
|
|
_, err = obj.PutObject(ctx, bucket, object, mustGetPutObjReader(t,
|
|
bytes.NewReader([]byte{}), 0, "", ""), opts)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
// Remove the object backend files from the first disk.
|
|
z := obj.(*erasureServerPools)
|
|
er := z.serverPools[0].sets[0]
|
|
firstDisk := er.getDisks()[0]
|
|
err = firstDisk.DeleteVol(context.Background(), pathJoin(bucket, encodeDirObject(object)), true)
|
|
if err != nil {
|
|
t.Fatalf("Failed to delete a file - %v", err)
|
|
}
|
|
|
|
// Heal the object
|
|
hr, err := obj.HealObject(ctx, bucket, object, "", madmin.HealOpts{ScanMode: madmin.HealNormalScan})
|
|
if err != nil {
|
|
t.Fatalf("Failed to heal object - %v", err)
|
|
}
|
|
|
|
// Check if the empty directory is restored in the first disk
|
|
_, err = firstDisk.StatVol(context.Background(), pathJoin(bucket, encodeDirObject(object)))
|
|
if err != nil {
|
|
t.Fatalf("Expected object to be present but stat failed - %v", err)
|
|
}
|
|
|
|
// Check the state of the object in the first disk (should be missing)
|
|
if hr.Before.Drives[0].State != madmin.DriveStateMissing {
|
|
t.Fatalf("Unexpected drive state: %v", hr.Before.Drives[0].State)
|
|
}
|
|
|
|
// Check the state of all other disks (should be ok)
|
|
for i, h := range append(hr.Before.Drives[1:], hr.After.Drives...) {
|
|
if h.State != madmin.DriveStateOk {
|
|
t.Fatalf("Unexpected drive state (%d): %v", i+1, h.State)
|
|
}
|
|
}
|
|
|
|
// Heal the same object again
|
|
hr, err = obj.HealObject(ctx, bucket, object, "", madmin.HealOpts{ScanMode: madmin.HealNormalScan})
|
|
if err != nil {
|
|
t.Fatalf("Failed to heal object - %v", err)
|
|
}
|
|
|
|
// Check that Before & After states are all okay
|
|
for i, h := range append(hr.Before.Drives, hr.After.Drives...) {
|
|
if h.State != madmin.DriveStateOk {
|
|
t.Fatalf("Unexpected drive state (%d): %v", i+1, h.State)
|
|
}
|
|
}
|
|
}
|