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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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5
cmd/storage-rpc-server.go
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@@ -164,10 +164,7 @@ func (s *storageServer) ReadFileWithVerifyHandler(args *ReadFileWithVerifyArgs,
if err = args.IsAuthenticated(); err != nil {
return err
}
var n int64
n, err = s.storage.ReadFileWithVerify(args.Vol, args.Path, args.Offset, args.Buffer,
args.Algo, args.ExpectedHash)
n, err := s.storage.ReadFileWithVerify(args.Vol, args.Path, args.Offset, args.Buffer, NewBitrotVerifier(args.Algo, args.ExpectedHash))
// Sending an error over the rpc layer, would cause unmarshalling to fail. In situations
// when we have short read i.e `io.ErrUnexpectedEOF` treat it as good condition and copy
// the buffer properly.