Vitastor 0.8.7 released

2023-04-11

This release includes a bunch of important bugfixes for erasure-coded setups with disabled immediate_commit. After these fixes, “test_heal” OSD killing test now passes fine with EC:

  • Fix cluster write stalls with “Error while doing flush on OSD xx: -16 (Device or resource busy)” in OSD logs possible in EC setups with disabled immediate_commit by selectively syncing nonsynced objects on STABILIZE/ROLLBACK (https://github.com/vitalif/vitastor/issues/51)
  • Fix other EC + disabled immediate_commit problems:
    • Fix “opcode=5 retval=-2” errors happening on SYNC retries
    • Fix non-working “pagination” during PG dirty object flushing
    • Fix write operations not continued correctly after dirty object flushing
  • Fix incorrect parity read-modify-write calculation when writing into a lost chunk
  • Fix OSDs losing left_on_dead PG state of non-clean PGs and thus not removing junk data in the cluster
  • Fix a small memory leak caused by bad indexing of EC recovery matrices
  • Fix a rare use-after-free in cluster_client caused by a reenterability issue
  • Fix vitastor-cli create command syntax in the CSI driver
  • Allow to start OSDs without local store for tests
  • Fix memory allocation error in disk_tool_meta for non-standard metadata block sizes
  • Fix delete operations received before loading pool metadata crashing OSDs with “null pointer exception”
  • Improve “theoretical performance” Russian documentation

New features

  • Implement online configuration update for some parameters. Documentation is coming soon :)