hyperledger/fabric · critical

error during commit to txmgr

Error message

error during commit to txmgr

What it means

kvLedger.commit panics with this wrapped error when txmgr.Commit fails, i.e. writing the block's transaction batch to the state database fails. It is wrapped with errors.WithMessage so the underlying cause (I/O error, DB corruption, etc.) is preserved. It is a panic, not a return, because a partial commit would leave the ledger inconsistent.

Source

Thrown at core/ledger/kvledger/kv_ledger.go:710

			continue
		}
		pvtKeysToDelete[privacyenabledstate.PvtdataCompositeKey{
			Namespace:      u.CompositeKey.Namespace,
			CollectionName: u.CompositeKey.CollectionName,
			Key:            pvtKey,
		}] = u.Version
	}

	if err = l.commitToPvtAndBlockStore(pvtdataAndBlock, purgeMarkers); err != nil {
		return err
	}
	elapsedBlockstorageAndPvtdataCommit := time.Since(startBlockstorageAndPvtdataCommit)

	startCommitState := time.Now()
	l.txmgr.UpdateBatchWithAppInitiatedPvtKeysToPurge(pvtKeysToDelete)
	logger.Debugf("[%s] Committing block [%d] transactions to state database", l.ledgerID, blockNo)
	if err = l.txmgr.Commit(); err != nil {
		panic(errors.WithMessage(err, "error during commit to txmgr"))
	}
	elapsedCommitState := time.Since(startCommitState)

	// History database could be written in parallel with state and/or async as a future optimization,
	// although it has not been a bottleneck...no need to clutter the log with elapsed duration.
	if l.historyDB != nil {
		logger.Debugf("[%s] Committing block [%d] transactions to history database", l.ledgerID, blockNo)
		if err := l.historyDB.Commit(block); err != nil {
			panic(errors.WithMessage(err, "Error during commit to history db"))
		}
	}

	logger.Infof(
		"[%s] Committed block [%d] with %d transaction(s) in %dms (state_validation=%dms block_and_pvtdata_commit=%dms state_commit=%dms)"+
			" commitHash=[%x]",
		l.ledgerID, block.Header.Number, len(block.Data.Data),
		time.Since(startBlockProcessing)/time.Millisecond,
		elapsedBlockProcessing/time.Millisecond,

View on GitHub (pinned to 2736b63f8f)

Solutions

1. Check peer logs for the wrapped underlying cause (disk full, I/O error)
2. Free disk space or fix filesystem permissions on the state DB directory
3. Ensure only one peer process uses the ledger data directory
4. If the state DB is corrupted, stop the peer, drop the state DB, and restart to trigger a rebuild

Example fix

// no caller code fix; recover operationally
// before: panic: error during commit to txmgr: IO error: ... No space left on device
// after: df -h; free space on the ledger data volume; restart peer

// Operational pre-checks before peer start:
// free disk space on ledger volume and confirm writable state DB dir
if diskFree(ledgerVolume) < minRequiredBytes || !isWritable(stateDBDir) {
    return errors.New("insufficient disk or permissions for state DB")
}

// This is a panic inside the peer; callers see the process crash.
// Wrap commit entry points (e.g. via broadcast clients) with restart logic:
func safeCommit(b *common.Block) (err error) {
    defer func() { if r := recover(); r != nil { err = fmt.Errorf("commit panic: %v", r) } }()
    ledger.Commit(b)
    return nil
}

When it happens

Trigger: During block commit (commit -> txmgr.Commit) when the state LevelDB write fails: disk full, I/O error, DB closed/corrupted, or lock contention from another process holding the DB.

Common situations: Disk full on the peer node, permission loss on ledgersData/state, LevelDB corruption, or two peer processes pointing at the same ledger data directory.

Related errors

• Error during commit to history db
• error in block index: %s
• Could not retrieve header of the last block form file: %s
• could not retrieve committed definition for chaincode '%s'
• the %s database [height=%d] is ahead of the block store [hei

AI-assisted analysis of hyperledger/fabric@2736b63f8f (2026-09-04). Data as JSON: /api/errors/dc211c8a85cedf3f. Report an issue: GitHub.