{"record":{"id":"dc211c8a85cedf3f","repo":"hyperledger/fabric","slug":"error-during-commit-to-txmgr","errorCode":null,"errorMessage":"error during commit to txmgr","messagePattern":"error during commit to txmgr","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"critical","filePath":"core/ledger/kvledger/kv_ledger.go","lineNumber":710,"sourceCode":"\t\t\tcontinue\n\t\t}\n\t\tpvtKeysToDelete[privacyenabledstate.PvtdataCompositeKey{\n\t\t\tNamespace:      u.CompositeKey.Namespace,\n\t\t\tCollectionName: u.CompositeKey.CollectionName,\n\t\t\tKey:            pvtKey,\n\t\t}] = u.Version\n\t}\n\n\tif err = l.commitToPvtAndBlockStore(pvtdataAndBlock, purgeMarkers); err != nil {\n\t\treturn err\n\t}\n\telapsedBlockstorageAndPvtdataCommit := time.Since(startBlockstorageAndPvtdataCommit)\n\n\tstartCommitState := time.Now()\n\tl.txmgr.UpdateBatchWithAppInitiatedPvtKeysToPurge(pvtKeysToDelete)\n\tlogger.Debugf(\"[%s] Committing block [%d] transactions to state database\", l.ledgerID, blockNo)\n\tif err = l.txmgr.Commit(); err != nil {\n\t\tpanic(errors.WithMessage(err, \"error during commit to txmgr\"))\n\t}\n\telapsedCommitState := time.Since(startCommitState)\n\n\t// History database could be written in parallel with state and/or async as a future optimization,\n\t// although it has not been a bottleneck...no need to clutter the log with elapsed duration.\n\tif l.historyDB != nil {\n\t\tlogger.Debugf(\"[%s] Committing block [%d] transactions to history database\", l.ledgerID, blockNo)\n\t\tif err := l.historyDB.Commit(block); err != nil {\n\t\t\tpanic(errors.WithMessage(err, \"Error during commit to history db\"))\n\t\t}\n\t}\n\n\tlogger.Infof(\n\t\t\"[%s] Committed block [%d] with %d transaction(s) in %dms (state_validation=%dms block_and_pvtdata_commit=%dms state_commit=%dms)\"+\n\t\t\t\" commitHash=[%x]\",\n\t\tl.ledgerID, block.Header.Number, len(block.Data.Data),\n\t\ttime.Since(startBlockProcessing)/time.Millisecond,\n\t\telapsedBlockProcessing/time.Millisecond,","sourceCodeStart":692,"sourceCodeEnd":728,"githubUrl":"https://github.com/hyperledger/fabric/blob/2736b63f8fd5932511d56fe68b7039d15977f7f6/core/ledger/kvledger/kv_ledger.go#L692-L728","documentation":"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.","triggerScenarios":"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.","commonSituations":"Disk full on the peer node, permission loss on ledgersData/state, LevelDB corruption, or two peer processes pointing at the same ledger data directory.","solutions":["Check peer logs for the wrapped underlying cause (disk full, I/O error)","Free disk space or fix filesystem permissions on the state DB directory","Ensure only one peer process uses the ledger data directory","If the state DB is corrupted, stop the peer, drop the state DB, and restart to trigger a rebuild"],"exampleFix":"// no caller code fix; recover operationally\n// before: panic: error during commit to txmgr: IO error: ... No space left on device\n// after: df -h; free space on the ledger data volume; restart peer","handlingStrategy":"retry","validationCode":"// Operational pre-checks before peer start:\n// free disk space on ledger volume and confirm writable state DB dir\nif diskFree(ledgerVolume) < minRequiredBytes || !isWritable(stateDBDir) {\n    return errors.New(\"insufficient disk or permissions for state DB\")\n}","typeGuard":null,"tryCatchPattern":"// This is a panic inside the peer; callers see the process crash.\n// Wrap commit entry points (e.g. via broadcast clients) with restart logic:\nfunc safeCommit(b *common.Block) (err error) {\n    defer func() { if r := recover(); r != nil { err = fmt.Errorf(\"commit panic: %v\", r) } }()\n    ledger.Commit(b)\n    return nil\n}","preventionTips":["Alert on ledger-volume disk usage before it fills","Ensure exactly one peer process per ledger data directory","Monitor LevelDB health and permissions after OS/user changes"],"tags":["hyperledger-fabric","ledger","commit","state-database","panic"],"backgroundTag":"state-db-commit-failed","analyzedSha":"2736b63f8fd5932511d56fe68b7039d15977f7f6","analyzedAt":"2026-09-04T08:52:36.465Z","contentChangedAt":"2026-09-04T08:52:36.465Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}