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b2: fix multipart upload: corrupted on transfer: sizes differ XXX vs 0

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Before this change the b2 backend wasn't writing the metadata to the
object properly after a multipart upload.

The symptom of this was that sometimes it would give the error:

    corrupted on transfer: sizes differ XXX vs 0

This was fixed by returning the metadata in the chunk writer and setting it in Update.

See: https://forum.rclone.org/t/multipart-upload-to-b2-sometimes-failing-with-corrupted-on-transfer-sizes-differ/41829
This commit is contained in:
Nick Craig-Wood
2023-09-18 20:41:31 +01:00
parent 9277ca1e54
commit 6072d314e1
2 changed files with 9 additions and 3 deletions
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8
backend/b2/b2.go
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@@ -1930,11 +1930,15 @@ func (o *Object) Update(ctx context.Context, in io.Reader, src fs.ObjectInfo, op
return err
}
} else if size > int64(o.fs.opt.UploadCutoff) {
_, err := multipart.UploadMultipart(ctx, src, in, multipart.UploadMultipartOptions{
chunkWriter, err := multipart.UploadMultipart(ctx, src, in, multipart.UploadMultipartOptions{
Open: o.fs,
OpenOptions: options,
})
return err
if err != nil {
return err
}
up := chunkWriter.(*largeUpload)
return o.decodeMetaDataFileInfo(up.info)
}
modTime := src.ModTime(ctx)