Vitastor 3.0.2 released

2026-01-25

  • Antietcd is now officially safe to use: the release includes a fixed version of antietcd which passes Jepsen transaction serializability tests.
  • Fix a huge checksum bug in the old store: incorrect checksums for small initial writes. The bug affected writes of exactly csum_block_size (4k by default) into new (unallocated) objects and generated invalid checksums in the store for the written 4k block. Moreover, generation of these invalid checksums was very slow because it was calculating CRC32 for 4 GB of zeroes. If the block wasn’t then overwritten as a part of a larger write request it became unreadable even though the stored data was correct. The bug affected all versions since 1.0.0, or since 2.3.0 because vitastor-disk didn’t allow to enable checksums prior to 2.3.0 because of another bug. O:-)
  • Prevent OSD disconnections due to long blocking of event-loop caused by PG resharding (moving objects between old and new PGs in memory) when changing pool PG count or just on restart of an OSD with a large database (for example, with a filled 8 TB SSD). The issue should now be fixed because OSD now performs resharding in chunks with pauses between chunks.
  • Prevent pools stuck in paused state on an aborted PG count change.
  • Fix a possible OSD crash with “division by zero” when trying to handle an operation before pool PG count is applied to the in-memory store.