hyperledger/fabric · error

cannot sync index with block files. blockstore is bootstrapp

Error message

cannot sync index with block files. blockstore is bootstrapped from a snapshot and first available block=[%d]

What it means

blockfileMgr.syncIndex guard: the index savepoint is absent while the store was bootstrapped from a snapshot, meaning the index was dropped/corrupted or the peer crashed during snapshot bootstrapping, so indexes cannot be rebuilt below the snapshot's first block.

Source

Thrown at common/ledger/blkstorage/blockfile_mgr.go:387

	mgr.updateBlockchainInfo(blockHash, block)
	return nil
}

func (mgr *blockfileMgr) syncIndex() error {
	nextIndexableBlock := uint64(0)
	lastBlockIndexed, err := mgr.index.getLastBlockIndexed()
	if err != nil {
		if !errors.Is(err, errIndexSavePointKeyNotPresent) {
			return err
		}
	} else {
		nextIndexableBlock = lastBlockIndexed + 1
	}

	if nextIndexableBlock == 0 && mgr.bootstrappedFromSnapshot() {
		// This condition can happen only if there was a peer crash or failure during
		// bootstrapping the ledger from a snapshot or the index is dropped/corrupted afterward
		return errors.Errorf(
			"cannot sync index with block files. blockstore is bootstrapped from a snapshot and first available block=[%d]",
			mgr.firstPossibleBlockNumberInBlockFiles(),
		)
	}

	if mgr.blockfilesInfo.noBlockFiles {
		logger.Debug("No block files present. This happens when there has not been any blocks added to the ledger yet")
		return nil
	}

	if nextIndexableBlock == mgr.blockfilesInfo.lastPersistedBlock+1 {
		logger.Debug("Both the block files and indices are in sync.")
		return nil
	}

	startFileNum := 0
	startOffset := 0
	skipFirstBlock := false

View on GitHub (pinned to 2736b63f8f)

Solutions

1. Drop the ledger and re-bootstrap the peer from a fresh snapshot
2. Restore the index from backup if available
3. Report as unrecoverable local state corruption; do not retry blindly

When it happens

Trigger: Thrown at common/ledger/blkstorage/blockfile_mgr.go:387 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of hyperledger/fabric@2736b63f8f (2026-09-04). Data as JSON: /api/errors/0cb1a0549716d189. Report an issue: GitHub.