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minio/cmd/xl-v1-healing_test.go

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/*
* Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import (
"bytes"
"fmt"
"os"
"path/filepath"
"testing"
)
// Tests healing of format XL.
func TestHealFormatXL(t *testing.T) {
root, err := newTestConfig(globalMinioDefaultRegion)
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(root)
nDisks := 16
fsDirs, err := getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
// Everything is fine, should return nil
obj, _, err := initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl := obj.(*xlObjects)
if err = healFormatXL(xl.storageDisks); err != nil {
t.Fatal("Got an unexpected error: ", err)
}
removeRoots(fsDirs)
fsDirs, err = getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
// Disks 0..15 are nil
obj, _, err = initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl = obj.(*xlObjects)
for i := 0; i <= 15; i++ {
xl.storageDisks[i] = nil
}
if err = healFormatXL(xl.storageDisks); err != errXLReadQuorum {
t.Fatal("Got an unexpected error: ", err)
}
removeRoots(fsDirs)
fsDirs, err = getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
// One disk returns Faulty Disk
obj, _, err = initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl = obj.(*xlObjects)
for i := range xl.storageDisks {
posixDisk, ok := xl.storageDisks[i].(*retryStorage)
if !ok {
t.Fatal("storage disk is not *retryStorage type")
}
xl.storageDisks[i] = newNaughtyDisk(posixDisk, nil, errDiskFull)
}
if err = healFormatXL(xl.storageDisks); err != errXLReadQuorum {
t.Fatal("Got an unexpected error: ", err)
}
removeRoots(fsDirs)
fsDirs, err = getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
// One disk is not found, heal corrupted disks should return
// error for offline disk
obj, _, err = initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl = obj.(*xlObjects)
xl.storageDisks[0] = nil
if err = healFormatXL(xl.storageDisks); err != nil && err.Error() != "cannot proceed with heal as some disks are offline" {
t.Fatal("Got an unexpected error: ", err)
}
removeRoots(fsDirs)
fsDirs, err = getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
// Remove format.json of all disks
obj, _, err = initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl = obj.(*xlObjects)
for i := 0; i <= 15; i++ {
if err = xl.storageDisks[i].DeleteFile(minioMetaBucket, formatConfigFile); err != nil {
t.Fatal(err)
}
}
if err = healFormatXL(xl.storageDisks); err != nil {
t.Fatal("Got an unexpected error: ", err)
}
removeRoots(fsDirs)
fsDirs, err = getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
// Corrupted format json in one disk
obj, _, err = initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl = obj.(*xlObjects)
for i := 0; i <= 15; i++ {
if err = xl.storageDisks[i].AppendFile(minioMetaBucket, formatConfigFile, []byte("corrupted data")); err != nil {
t.Fatal(err)
}
}
if err = healFormatXL(xl.storageDisks); err == nil {
t.Fatal("Should get a json parsing error, ")
}
removeRoots(fsDirs)
fsDirs, err = getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
// Remove format.json on 3 disks.
obj, _, err = initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl = obj.(*xlObjects)
for i := 0; i <= 2; i++ {
if err = xl.storageDisks[i].DeleteFile(minioMetaBucket, formatConfigFile); err != nil {
t.Fatal(err)
}
}
if err = healFormatXL(xl.storageDisks); err != nil {
t.Fatal("Got an unexpected error: ", err)
}
removeRoots(fsDirs)
fsDirs, err = getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
// One disk is not found, heal corrupted disks should return nil
obj, _, err = initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl = obj.(*xlObjects)
for i := 0; i <= 2; i++ {
if err = xl.storageDisks[i].DeleteFile(minioMetaBucket, formatConfigFile); err != nil {
t.Fatal(err)
}
}
posixDisk, ok := xl.storageDisks[3].(*retryStorage)
if !ok {
t.Fatal("storage disk is not *retryStorage type")
}
xl.storageDisks[3] = newNaughtyDisk(posixDisk, nil, errDiskNotFound)
expectedErr := fmt.Errorf("cannot proceed with heal as %s", errSomeDiskOffline)
if err = healFormatXL(xl.storageDisks); err != nil {
if err.Error() != expectedErr.Error() {
t.Fatal("Got an unexpected error: ", err)
}
}
removeRoots(fsDirs)
fsDirs, err = getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
// One disk has access denied error, heal should return
// appropriate error
obj, _, err = initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl = obj.(*xlObjects)
for i := 0; i <= 2; i++ {
if err = xl.storageDisks[i].DeleteFile(minioMetaBucket, formatConfigFile); err != nil {
t.Fatal(err)
}
}
posixDisk, ok = xl.storageDisks[3].(*retryStorage)
if !ok {
t.Fatal("storage disk is not *retryStorage type")
}
xl.storageDisks[3] = newNaughtyDisk(posixDisk, nil, errDiskAccessDenied)
expectedErr = fmt.Errorf("cannot proceed with heal as some disks had unhandled errors")
if err = healFormatXL(xl.storageDisks); err != nil {
if err.Error() != expectedErr.Error() {
t.Fatal("Got an unexpected error: ", err)
}
}
removeRoots(fsDirs)
fsDirs, err = getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
// One disk is not found, heal corrupted disks should return nil
obj, _, err = initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl = obj.(*xlObjects)
if err = obj.MakeBucketWithLocation(getRandomBucketName(), ""); err != nil {
t.Fatal(err)
}
for i := 0; i <= 2; i++ {
if err = xl.storageDisks[i].DeleteFile(minioMetaBucket, formatConfigFile); err != nil {
t.Fatal(err)
}
}
if err = healFormatXL(xl.storageDisks); err != nil {
t.Fatal("Got an unexpected error: ", err)
}
removeRoots(fsDirs)
}
// Tests undoes and validates if the undoing completes successfully.
func TestUndoMakeBucket(t *testing.T) {
root, err := newTestConfig(globalMinioDefaultRegion)
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(root)
nDisks := 16
fsDirs, err := getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
defer removeRoots(fsDirs)
// Remove format.json on 16 disks.
obj, _, err := initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
bucketName := getRandomBucketName()
if err = obj.MakeBucketWithLocation(bucketName, ""); err != nil {
t.Fatal(err)
}
xl := obj.(*xlObjects)
undoMakeBucket(xl.storageDisks, bucketName)
// Validate if bucket was deleted properly.
_, err = obj.GetBucketInfo(bucketName)
if err != nil {
err = errorCause(err)
switch err.(type) {
case BucketNotFound:
default:
t.Fatal(err)
}
}
}
// Tests quick healing of bucket and bucket metadata.
func TestQuickHeal(t *testing.T) {
root, err := newTestConfig(globalMinioDefaultRegion)
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(root)
nDisks := 16
fsDirs, err := getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
defer removeRoots(fsDirs)
// Remove format.json on 16 disks.
obj, _, err := initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
bucketName := getRandomBucketName()
if err = obj.MakeBucketWithLocation(bucketName, ""); err != nil {
t.Fatal(err)
}
xl := obj.(*xlObjects)
for i := 0; i <= 2; i++ {
if err = xl.storageDisks[i].DeleteVol(bucketName); err != nil {
t.Fatal(err)
}
}
// Heal the missing buckets.
if err = quickHeal(xl.storageDisks, xl.writeQuorum, xl.readQuorum); err != nil {
t.Fatal(err)
}
// Validate if buckets were indeed healed.
for i := 0; i <= 2; i++ {
if _, err = xl.storageDisks[i].StatVol(bucketName); err != nil {
t.Fatal(err)
}
}
// Corrupt one of the disks to return unformatted disk.
posixDisk, ok := xl.storageDisks[0].(*retryStorage)
if !ok {
t.Fatal("storage disk is not *retryStorage type")
}
xl.storageDisks[0] = newNaughtyDisk(posixDisk, nil, errUnformattedDisk)
if err = quickHeal(xl.storageDisks, xl.writeQuorum, xl.readQuorum); err != errUnformattedDisk {
t.Fatal(err)
}
fsDirs, err = getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
defer removeRoots(fsDirs)
// One disk is not found, heal corrupted disks should return nil
obj, _, err = initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl = obj.(*xlObjects)
xl.storageDisks[0] = nil
if err = quickHeal(xl.storageDisks, xl.writeQuorum, xl.readQuorum); err != nil {
t.Fatal("Got an unexpected error: ", err)
}
fsDirs, err = getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
defer removeRoots(fsDirs)
// One disk is not found, heal corrupted disks should return nil
obj, _, err = initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
xl = obj.(*xlObjects)
// Corrupt one of the disks to return unformatted disk.
posixDisk, ok = xl.storageDisks[0].(*retryStorage)
if !ok {
t.Fatal("storage disk is not *retryStorage type")
}
xl.storageDisks[0] = newNaughtyDisk(posixDisk, nil, errDiskNotFound)
if err = quickHeal(xl.storageDisks, xl.writeQuorum, xl.readQuorum); err != nil {
t.Fatal("Got an unexpected error: ", err)
}
}
// TestListBucketsHeal lists buckets heal result
func TestListBucketsHeal(t *testing.T) {
root, err := newTestConfig("us-east-1")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(root)
nDisks := 16
fsDirs, err := getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
defer removeRoots(fsDirs)
obj, _, err := initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
// Create a bucket that won't get corrupted
saneBucket := "sanebucket"
if err = obj.MakeBucketWithLocation(saneBucket, ""); err != nil {
t.Fatal(err)
}
// Create a bucket that will be removed in some disks
corruptedBucketName := getRandomBucketName()
if err = obj.MakeBucketWithLocation(corruptedBucketName, ""); err != nil {
t.Fatal(err)
}
xl := obj.(*xlObjects)
// Remove bucket in disk 0, 1 and 2
for i := 0; i <= 2; i++ {
if err = xl.storageDisks[i].DeleteVol(corruptedBucketName); err != nil {
t.Fatal(err)
}
}
// List the missing buckets.
buckets, err := xl.ListBucketsHeal()
if err != nil {
t.Fatal(err)
}
// Check the number of buckets in list buckets heal result
if len(buckets) != 1 {
t.Fatalf("Length of missing buckets is incorrect, expected: 1, found: %d", len(buckets))
}
// Check the name of bucket in list buckets heal result
if buckets[0].Name != corruptedBucketName {
t.Fatalf("Name of missing bucket is incorrect, expected: %s, found: %s", corruptedBucketName, buckets[0].Name)
}
}
// Tests healing of object.
func TestHealObjectXL(t *testing.T) {
root, err := newTestConfig(globalMinioDefaultRegion)
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(root)
nDisks := 16
fsDirs, err := getRandomDisks(nDisks)
if err != nil {
t.Fatal(err)
}
defer removeRoots(fsDirs)
// Everything is fine, should return nil
obj, _, err := initObjectLayer(mustGetNewEndpointList(fsDirs...))
if err != nil {
t.Fatal(err)
}
bucket := "bucket"
object := "object"
data := bytes.Repeat([]byte("a"), 5*1024*1024)
err = obj.MakeBucketWithLocation(bucket, "")
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(bucket, object, nil)
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(bucket, object, uploadID, partID, mustGetHashReader(t, bytes.NewReader(data), int64(len(data)), "", ""))
if err1 != nil {
t.Fatalf("Failed to upload a part - %v", err1)
}
uploadedParts = append(uploadedParts, CompletePart{
PartNumber: pInfo.PartNumber,
ETag: pInfo.ETag,
})
}
_, err = obj.CompleteMultipartUpload(bucket, object, uploadID, uploadedParts)
if err != nil {
t.Fatalf("Failed to complete multipart upload - %v", err)
}
// Remove the object backend files from the first disk.
xl := obj.(*xlObjects)
firstDisk := xl.storageDisks[0]
err = firstDisk.DeleteFile(bucket, filepath.Join(object, xlMetaJSONFile))
if err != nil {
t.Fatalf("Failed to delete a file - %v", err)
}
_, _, err = obj.HealObject(bucket, object)
if err != nil {
t.Fatalf("Failed to heal object - %v", err)
}
_, err = firstDisk.StatFile(bucket, filepath.Join(object, xlMetaJSONFile))
if err != nil {
t.Errorf("Expected xl.json file to be present but stat failed - %v", err)
}
// Nil more than half the disks, to remove write quorum.
for i := 0; i <= len(xl.storageDisks)/2; i++ {
xl.storageDisks[i] = nil
}
// Try healing now, expect to receive errDiskNotFound.
_, _, err = obj.HealObject(bucket, object)
if errorCause(err) != errDiskNotFound {
t.Errorf("Expected %v but received %v", errDiskNotFound, err)
}
}