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etcdserver: process the scenaro of the last WAL record being partially synced to disk

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We need to return io.ErrUnexpectedEOF in the error chain, so that
etcdserver can repair it automatically.

Backport https://github.com/etcd-io/etcd/pull/15068

Signed-off-by: Benjamin Wang <wachao@vmware.com>
This commit is contained in:
Benjamin Wang
2023-01-08 05:30:01 +08:00
parent 9e3966fbce
commit e1fc545d8a
5 changed files with 91 additions and 12 deletions
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4
server/wal/decoder.go
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@@ -84,8 +84,8 @@ func (d *decoder) decodeRecord(rec *walpb.Record) error {
// The length of current WAL entry must be less than the remaining file size.
maxEntryLimit := fileBufReader.FileInfo().Size() - d.lastValidOff - padBytes
if recBytes > maxEntryLimit {
return fmt.Errorf("wal: max entry size limit exceeded, recBytes: %d, fileSize(%d) - offset(%d) - padBytes(%d) = entryLimit(%d)",
recBytes, fileBufReader.FileInfo().Size(), d.lastValidOff, padBytes, maxEntryLimit)
return fmt.Errorf("%w: [wal] max entry size limit exceeded when decoding %q, recBytes: %d, fileSize(%d) - offset(%d) - padBytes(%d) = entryLimit(%d)",
io.ErrUnexpectedEOF, fileBufReader.FileInfo().Name(), recBytes, fileBufReader.FileInfo().Size(), d.lastValidOff, padBytes, maxEntryLimit)
}
data := make([]byte, recBytes+padBytes)