DB Sync 13.7.0.5

DB Sync 13.7.0.5 supports node version 11.0.1 and the PV11 intra-era hard fork. It's a minor fix and version update over 13.7.0.4.

For Linux, liburing, protobuf-compiler, and snappy-c are new dependencies.

Upgrading

Upgrading from older versions (13.6, 13.7) is possible with minor changes
to the database (see migration-2-0045-20250708.sql, migration-2-0046-20250223.sql, migration-2-0047-20260421.sql, migration-4-0009-20250223.sql).

The ledger snapshot format has changed and is now fully compatible with cardano-node. Upgrading requires a ledger replay from genesis. You will see log lines such as:

Migrating: removing <N> old .lstate snapshots

followed by a replay that takes a few hours.

Snapshots

The release is compatible with both 13.7 and 13.6 DB snapshots:

Changelog

https://github.com/IntersectMBO/cardano-db-sync/blob/release/13.7.0.5/CHANGELOG.md#13705

LSM (experimental)

• Enable by setting "ledger_backend": "lsm" in the db-sync config — see config docs.
• Snapshots can be converted between InMemory and LSM with snapshot-converter — see snapshot docs.
  The compatible snapshot-converter is shipped with node-11.0.1.
• --bootstrap-tx-out is not supported with LSM.

Notes

When running db-sync, enable only the data you actually need. This is
configured in the db-sync config file — see config docs.

Platforms

• Linux 64-bit
• Docker image
• Requires ghc-9.6.x to build

Known issues (same as cardano-node)

• When using the LSM storage backend, db-sync cannot read blocks with more than 4096 items due to a bug in blockio-uring. This issue already has a fix that will be included into the next release.
• When using the LSM storage backend, db-sync could crash due to how ghc handles system threads. This only happens on resource-constrained devices such as the Raspberry Pi. The fix will be shipped in the next release.
• When using the LSM storage backend, the CPU idle time is reported as iowait. This is not a performance or correctness issue, but it may be confusing. The fix will be shipped in the next release.

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