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Copy patherasure-heal.go
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48 lines (44 loc) · 1.4 KB
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/*
* Minio Cloud Storage, (C) 2016 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 (
"context"
"io"
"github.com/minio/minio/cmd/logger"
)
// Heal heals the shard files on non-nil writers. Note that the quorum passed is 1
// as healing should continue even if it has been successful healing only one shard file.
func (e Erasure) Heal(ctx context.Context, readers []*bitrotReader, writers []*bitrotWriter, size int64) error {
r, w := io.Pipe()
go func() {
if err := e.Decode(ctx, w, readers, 0, size, size); err != nil {
w.CloseWithError(err)
return
}
w.Close()
}()
buf := make([]byte, e.blockSize)
// quorum is 1 because CreateFile should continue writing as long as we are writing to even 1 disk.
n, err := e.Encode(ctx, r, writers, buf, 1)
if err != nil {
return err
}
if n != size {
logger.LogIf(ctx, errLessData)
return errLessData
}
return nil
}