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| author | Paul Buetow <paul@buetow.org> | 2026-06-20 17:28:36 +0300 |
|---|---|---|
| committer | Paul Buetow <paul@buetow.org> | 2026-06-20 17:28:36 +0300 |
| commit | c9f06a21fb1daa74c9db341636a2c4b118bda1d8 (patch) | |
| tree | c99369f8da6b3ef49850d92d0396caa00d7d8f99 /openbsd/frontends/scripts | |
| parent | 6c13b6a253aec415b8ad850df4abfcecc8efbcd7 (diff) | |
carp: rollback sink to last snapshot on BACKUP transition
After a CARP failover where f1 serves as MASTER, any NFS writes go to
the sink dataset (zdata/sink/f0/zdata/enc/nfsdata). When f1 returns to
BACKUP, zfs receive from f0 fails with "destination has been modified
since most recent snapshot" because the filesystem state is ahead of the
last received snapshot.
Fix: on BACKUP transition, roll the sink back to the last zrepl snapshot
before setting readonly=on. Writes during the MASTER window (health
checks, test writes) are intentionally discarded — f0 is authoritative
and replication resumes cleanly from the common snapshot.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Diffstat (limited to 'openbsd/frontends/scripts')
0 files changed, 0 insertions, 0 deletions