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Have local EC volume scrubbing check needle integrity whenever possible. (#8334)

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If local EC scrubbing hits needles whose chunk location reside entirely
in local shards, we can fully reconstruct them, and check CRCs for
data integrity.
This commit is contained in:
Lisandro Pin
2026-02-14 00:43:17 +01:00
committed by GitHub
parent b08bb8237c
commit 1ebc9dd530
1 changed files with 17 additions and 2 deletions
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19
weed/storage/erasure_coding/ec_volume_scrub.go
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@@ -45,6 +45,9 @@ func (ecv *EcVolume) ScrubLocal() (int64, []*volume_server_pb.EcShardInfo, []err
}
var read int64
var hasRemoteChunks bool
var data []byte
locations := ecv.LocateEcShardNeedleInterval(ecv.Version, offset.ToActualOffset(), size)
for i, iv := range locations {
@@ -53,6 +56,7 @@ func (ecv *EcVolume) ScrubLocal() (int64, []*volume_server_pb.EcShardInfo, []err
shard, found := ecv.FindEcVolumeShard(sid)
if !found {
// shard is not local :( skip it
hasRemoteChunks = true
read += ssize
continue
}
@@ -61,8 +65,8 @@ func (ecv *EcVolume) ScrubLocal() (int64, []*volume_server_pb.EcShardInfo, []err
continue
}
buf := make([]byte, ssize)
got, err := shard.ReadAt(buf, soffset)
chunk := make([]byte, ssize)
got, err := shard.ReadAt(chunk, soffset)
if err != nil {
flagShardBroken(shard, "failed to read chunk %d/%d for needle %d from local shard %d at offset %d: %v", i+1, len(locations), id, sid, soffset, err)
continue
@@ -71,12 +75,23 @@ func (ecv *EcVolume) ScrubLocal() (int64, []*volume_server_pb.EcShardInfo, []err
flagShardBroken(shard, "expected %d bytes for chunk %d/%d for needle %d from local shard %d, got %d", ssize, i+1, len(locations), id, sid, got)
continue
}
if !hasRemoteChunks {
data = append(data, chunk...)
}
read += int64(got)
}
if got, want := read, needle.GetActualSize(size, ecv.Version); got != want {
return fmt.Errorf("expected %d bytes for needle %d, got %d", want, id, got)
}
if !hasRemoteChunks {
// needle was fully recovered from local shards \o/ let's check it
n := needle.Needle{}
if err := n.ReadBytes(data, 0, size, ecv.Version); err != nil {
errs = append(errs, fmt.Errorf("needle %d on volume %d: %v", id, ecv.VolumeId, err))
}
}
return nil
})