Files
seaweedfs/weed/storage/volume_read_all.go
T
b9ad62fc16 [Volume] Keep DAT and index state consistent after async batch Sync failure (#11425)
* fix 11400

* persist failed-recovery quarantine and harden rollback

- record the unavailable state in a .unavailable marker, fsync it, and
  re-arm it on load so a restart cannot serve an unverified pair
- quarantine the volume so heartbeats stop advertising it
- block MarkVolumeWritable while unavailable, rechecked under noWriteLock
- fail every request of a failed batch, not only the succeeded ones
- restore the needle map and truncate .dat on inline fsync rollback failure
- add truncateIndex for the sorted-file needle map
- mirror the fail-closed semantics in the Rust volume server

* volume: erase rolled-back mappings instead of leaving tombstones

A rolled-back batch or failed inline write used Delete() to undo a
needle that did not exist beforehand, leaving a tombstoned map entry
whose stale offset makes the next write to that needle fail reading a
header that no longer exists. Add removeMapping/restoreMapping to the
mappers so recovery erases entries that were absent before the batch
and reinstates the exact prior offset/size for ones that were,
including tombstones. The index row still goes through Delete so a
replay forgets the needle.

* volume: gate bulk readers on unavailable and fsync the marker's dir

- fsync_dir(&self.dir) synced the volume dir's parent, not the dir
  holding .unavailable; pass the marker path so the create survives
  a host crash
- export UnavailableError and check it in ReadAllNeedles,
  VolumeTailSender, VolumeIncrementalCopy, and IncrementalBackup so
  replica-sync paths cannot stream or append data from an unverified
  .dat/.idx pair; mirror on the Rust side via read_dat_slice,
  read_all_needles, dat_scan_plan, and the incremental-copy handler

* volume: drop issue references from comments near touched code

* volume: stop active scans when the volume becomes unavailable

The stream entry-point checks ran once per RPC, so a volume quarantined
by a failed recovery mid-scan kept serving data. Recheck availability
per needle/chunk on the detached read paths: tail scan and heartbeat,
read-all, incremental copy, incremental backup writes, and the Rust
StreamingBody chunk reads. Rust incremental copy also rejects a
quarantined volume before sync_to_disk touches the backend.

---------

Co-authored-by: Chris Lu <chris.lu@gmail.com>
2026-09-24 06:57:44 +08:00

51 lines
1.3 KiB
Go

package storage
import (
"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
"github.com/seaweedfs/seaweedfs/weed/storage/needle"
"github.com/seaweedfs/seaweedfs/weed/storage/super_block"
)
type VolumeFileScanner4ReadAll struct {
Stream volume_server_pb.VolumeServer_ReadAllNeedlesServer
V *Volume
}
func (scanner *VolumeFileScanner4ReadAll) VisitSuperBlock(superBlock super_block.SuperBlock) error {
return nil
}
func (scanner *VolumeFileScanner4ReadAll) ReadNeedleBody() bool {
return true
}
func (scanner *VolumeFileScanner4ReadAll) VisitNeedle(n *needle.Needle, offset int64, needleHeader, needleBody []byte) error {
if err := scanner.V.UnavailableError(); err != nil {
return err
}
nv, ok := scanner.V.nm.Get(n.Id)
if !ok {
return nil
}
if nv.Offset.ToActualOffset() != offset {
return nil
}
sendErr := scanner.Stream.Send(&volume_server_pb.ReadAllNeedlesResponse{
VolumeId: uint32(scanner.V.Id),
NeedleId: uint64(n.Id),
Cookie: uint32(n.Cookie),
NeedleBlob: n.Data,
NeedleBlobCompressed: n.IsCompressed(),
LastModified: n.LastModified,
Crc: n.Checksum.Value(),
Name: n.Name,
Mime: n.Mime,
})
if sendErr != nil {
return sendErr
}
return nil
}