mirror of https://github.com/restic/restic.git
89 lines
2.2 KiB
Go
89 lines
2.2 KiB
Go
package repository
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"io"
|
|
|
|
"github.com/restic/restic/internal/restic"
|
|
"github.com/restic/restic/internal/ui/progress"
|
|
"golang.org/x/sync/errgroup"
|
|
)
|
|
|
|
func RepairPacks(ctx context.Context, repo restic.Repository, ids restic.IDSet, printer progress.Printer) error {
|
|
wg, wgCtx := errgroup.WithContext(ctx)
|
|
repo.StartPackUploader(wgCtx, wg)
|
|
|
|
printer.P("salvaging intact data from specified pack files")
|
|
bar := printer.NewCounter("pack files")
|
|
bar.SetMax(uint64(len(ids)))
|
|
defer bar.Done()
|
|
|
|
wg.Go(func() error {
|
|
// examine all data the indexes have for the pack file
|
|
for b := range repo.Index().ListPacks(wgCtx, ids) {
|
|
blobs := b.Blobs
|
|
if len(blobs) == 0 {
|
|
printer.E("no blobs found for pack %v", b.PackID)
|
|
bar.Add(1)
|
|
continue
|
|
}
|
|
|
|
err := repo.LoadBlobsFromPack(wgCtx, b.PackID, blobs, func(blob restic.BlobHandle, buf []byte, err error) error {
|
|
if err != nil {
|
|
// Fallback path
|
|
buf, err = repo.LoadBlob(wgCtx, blob.Type, blob.ID, nil)
|
|
if err != nil {
|
|
printer.E("failed to load blob %v: %v", blob.ID, err)
|
|
return nil
|
|
}
|
|
}
|
|
id, _, _, err := repo.SaveBlob(wgCtx, blob.Type, buf, restic.ID{}, true)
|
|
if !id.Equal(blob.ID) {
|
|
panic("pack id mismatch during upload")
|
|
}
|
|
return err
|
|
})
|
|
// ignore truncated file parts
|
|
if err != nil && !errors.Is(err, io.ErrUnexpectedEOF) {
|
|
return err
|
|
}
|
|
bar.Add(1)
|
|
}
|
|
return repo.Flush(wgCtx)
|
|
})
|
|
|
|
err := wg.Wait()
|
|
bar.Done()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// remove salvaged packs from index
|
|
printer.P("rebuilding index")
|
|
|
|
bar = printer.NewCounter("packs processed")
|
|
err = repo.Index().Save(ctx, repo, ids, nil, restic.MasterIndexSaveOpts{
|
|
SaveProgress: bar,
|
|
DeleteProgress: func() *progress.Counter {
|
|
return printer.NewCounter("old indexes deleted")
|
|
},
|
|
DeleteReport: func(id restic.ID, err error) {
|
|
printer.VV("removed index %v", id.String())
|
|
},
|
|
})
|
|
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// cleanup
|
|
printer.P("removing salvaged pack files")
|
|
// if we fail to delete the damaged pack files, then prune will remove them later on
|
|
bar = printer.NewCounter("files deleted")
|
|
_ = restic.ParallelRemove(ctx, repo, ids, restic.PackFile, nil, bar)
|
|
bar.Done()
|
|
|
|
return nil
|
|
}
|