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erasure: simplify XL backend operations (#4649) (#4758)

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This change provides new implementations of the XL backend operations:
 - create file
 - read   file
 - heal   file
Further this change adds table based tests for all three operations.

This affects also the bitrot algorithm integration. Algorithms are now
integrated in an idiomatic way (like crypto.Hash).
Fixes #4696
Fixes #4649
Fixes #4359
This commit is contained in:
Andreas Auernhammer
2017-08-14 18:08:42 -07:00
committed by Dee Koder
parent 617f2394fb
commit 85fcee1919
33 changed files with 1238 additions and 1863 deletions
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13
cmd/retry-storage.go
View File

@@ -221,18 +221,11 @@ func (f *retryStorage) ReadFile(volume, path string, offset int64, buffer []byte
// ReadFileWithVerify - a retryable implementation of reading at
// offset from a file with verification.
func (f *retryStorage) ReadFileWithVerify(volume, path string, offset int64, buffer []byte,
algo HashAlgo, expectedHash string) (m int64, err error) {
if f.IsOffline() {
return m, errDiskNotFound
}
func (f retryStorage) ReadFileWithVerify(volume, path string, offset int64, buffer []byte, verifier *BitrotVerifier) (m int64, err error) {
m, err = f.remoteStorage.ReadFileWithVerify(volume, path, offset, buffer,
algo, expectedHash)
m, err = f.remoteStorage.ReadFileWithVerify(volume, path, offset, buffer, verifier)
if f.reInitUponDiskNotFound(err) {
m, err = f.remoteStorage.ReadFileWithVerify(volume, path,
offset, buffer, algo, expectedHash)
return m, retryToStorageErr(err)
m, err = f.remoteStorage.ReadFileWithVerify(volume, path, offset, buffer, verifier)
}
return m, retryToStorageErr(err)
}