DB Sync 13.7.1.0

DB Sync 13.7.1.0 is a fix on the epoch table. It fixes in place any older possibly wrong values, caused by bugs from older versions.

Upgrading

Upgrading from 13.7.0.X takes a few minutes and runs the epoch table fix migration migration-2-0048-20260520.sql

Otherwise this release is similar to 13.7.0.5

Snapshots

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

Changelog

https://github.com/IntersectMBO/cardano-db-sync/blob/release/13.7.1.0/CHANGELOG.md#13710

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 (identical to 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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