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fix: CopyObject behavior on expanded zones (#9729)

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CopyObject was not correctly figuring out the correct
destination object location and would end up creating
duplicate objects on two different zones, reproduced
by doing encryption based key rotation.
This commit is contained in:
Harshavardhana
2020-05-28 14:36:38 -07:00
committed by GitHub
parent b2db8123ec
commit 41688a936b
8 changed files with 92 additions and 86 deletions
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cmd/xl-v1-object.go
+53 -56
View File
@@ -65,64 +65,61 @@ func (xl xlObjects) putObjectDir(ctx context.Context, bucket, object string, wri
// if source object and destination object are same we only
// update metadata.
func (xl xlObjects) CopyObject(ctx context.Context, srcBucket, srcObject, dstBucket, dstObject string, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (oi ObjectInfo, e error) {
cpSrcDstSame := isStringEqual(pathJoin(srcBucket, srcObject), pathJoin(dstBucket, dstObject))
// Check if this request is only metadata update.
if cpSrcDstSame {
defer ObjectPathUpdated(path.Join(dstBucket, dstObject))
// Read metadata associated with the object from all disks.
storageDisks := xl.getDisks()
metaArr, errs := readAllXLMetadata(ctx, storageDisks, srcBucket, srcObject)
// get Quorum for this object
readQuorum, writeQuorum, err := objectQuorumFromMeta(ctx, xl, metaArr, errs)
if err != nil {
return oi, toObjectErr(err, srcBucket, srcObject)
}
if reducedErr := reduceReadQuorumErrs(ctx, errs, objectOpIgnoredErrs, readQuorum); reducedErr != nil {
return oi, toObjectErr(reducedErr, srcBucket, srcObject)
}
// List all online disks.
_, modTime := listOnlineDisks(storageDisks, metaArr, errs)
// Pick latest valid metadata.
xlMeta, err := pickValidXLMeta(ctx, metaArr, modTime, readQuorum)
if err != nil {
return oi, toObjectErr(err, srcBucket, srcObject)
}
// Update `xl.json` content on each disks.
for index := range metaArr {
metaArr[index].Meta = srcInfo.UserDefined
metaArr[index].Meta["etag"] = srcInfo.ETag
}
var onlineDisks []StorageAPI
tempObj := mustGetUUID()
// Cleanup in case of xl.json writing failure
defer xl.deleteObject(ctx, minioMetaTmpBucket, tempObj, writeQuorum, false)
// Write unique `xl.json` for each disk.
if onlineDisks, err = writeUniqueXLMetadata(ctx, storageDisks, minioMetaTmpBucket, tempObj, metaArr, writeQuorum); err != nil {
return oi, toObjectErr(err, srcBucket, srcObject)
}
// Rename atomically `xl.json` from tmp location to destination for each disk.
if _, err = renameXLMetadata(ctx, onlineDisks, minioMetaTmpBucket, tempObj, srcBucket, srcObject, writeQuorum); err != nil {
return oi, toObjectErr(err, srcBucket, srcObject)
}
return xlMeta.ToObjectInfo(srcBucket, srcObject), nil
// This call shouldn't be used for anything other than metadata updates.
if !srcInfo.metadataOnly {
return oi, NotImplemented{}
}
putOpts := ObjectOptions{ServerSideEncryption: dstOpts.ServerSideEncryption, UserDefined: srcInfo.UserDefined}
return xl.PutObject(ctx, dstBucket, dstObject, srcInfo.PutObjReader, putOpts)
defer ObjectPathUpdated(path.Join(dstBucket, dstObject))
// Read metadata associated with the object from all disks.
storageDisks := xl.getDisks()
metaArr, errs := readAllXLMetadata(ctx, storageDisks, srcBucket, srcObject)
// get Quorum for this object
readQuorum, writeQuorum, err := objectQuorumFromMeta(ctx, xl, metaArr, errs)
if err != nil {
return oi, toObjectErr(err, srcBucket, srcObject)
}
if reducedErr := reduceReadQuorumErrs(ctx, errs, objectOpIgnoredErrs, readQuorum); reducedErr != nil {
return oi, toObjectErr(reducedErr, srcBucket, srcObject)
}
// List all online disks.
_, modTime := listOnlineDisks(storageDisks, metaArr, errs)
// Pick latest valid metadata.
xlMeta, err := pickValidXLMeta(ctx, metaArr, modTime, readQuorum)
if err != nil {
return oi, toObjectErr(err, srcBucket, srcObject)
}
// Update `xl.json` content on each disks.
for index := range metaArr {
metaArr[index].Meta = srcInfo.UserDefined
metaArr[index].Meta["etag"] = srcInfo.ETag
}
var onlineDisks []StorageAPI
tempObj := mustGetUUID()
// Cleanup in case of xl.json writing failure
defer xl.deleteObject(ctx, minioMetaTmpBucket, tempObj, writeQuorum, false)
// Write unique `xl.json` for each disk.
if onlineDisks, err = writeUniqueXLMetadata(ctx, storageDisks, minioMetaTmpBucket, tempObj, metaArr, writeQuorum); err != nil {
return oi, toObjectErr(err, srcBucket, srcObject)
}
// Rename atomically `xl.json` from tmp location to destination for each disk.
if _, err = renameXLMetadata(ctx, onlineDisks, minioMetaTmpBucket, tempObj, srcBucket, srcObject, writeQuorum); err != nil {
return oi, toObjectErr(err, srcBucket, srcObject)
}
return xlMeta.ToObjectInfo(srcBucket, srcObject), nil
}
// GetObjectNInfo - returns object info and an object