kevinveenbirkenbachandClaude Opus 5 f9d6f4525b fix(swarm-lab): give each node its own zfs pool name ...

In job 91983553540 all five lab nodes derived the same pool name,
infinito_ci_unknown, and the run died on `cannot destroy
'infinito_ci_unknown': pool is busy`. The name came from `hostname`, which
returns non-zero inside the node containers, so the `|| echo unknown` fallback
answered for every one of them. One node won the race and created the pool; the
others found it, took it for a leftover, and tried to tear down a pool a
sibling was actively using.

234c1158c already fixed this collision class three days ago by deriving the
name from `hostname` instead of a constant, and its message named the zfs
exclusion in resolve.sh as the only thing keeping the collision out of sight.
That fix was never exercised, because the exclusion stayed up until ed1121053
removed it - and it does not work, because the call it rests on fails in the
containers it was written for. Guessing the identity is the defect; the
playbook has known it all along as inventory_hostname, and ci/one.sh knows its
own deploy mode. Both now state it, as a required fourth argument with no
default, the way SIZE is already stated. verdict() stops guessing too: every
row it wrote into the job summary said `unknown`, which is why the summary was
never worth reading.

The second half is independent of the naming. reclaim_stale_pool ran
`zpool destroy -f` as a bare command under `set -euo pipefail`, the only
failure path in this script that bypassed decline(). A pool that refuses to be
destroyed is by definition not a leftover - something holds it - so that case
now declines through the usual contract: a drawn pick falls back and reports,
a stated one fails loudly as required-but-unavailable. A reclaim can no longer
be more destructive than the state it exists to clean up.

Verified over the real invocation path rather than a model of it: an
ansible-playbook run using the same `script:` task and docker connection as
compose/swarm/playbook.yml, against three containers in one play, has each node
address its own pool - infinito_ci_race-mgr-01, -wrk-01, -nfs-01 - with
failed=0 throughout. A stubbed-pool harness covers the paths that need a kernel
module this machine does not have: a sibling holding the pool declines with rc
0 instead of ending the run, the same case with a stated pick exits 1 through
the contract, a genuine leftover is still destroyed, and a missing identity is
a hard error. The earlier replacement harness (ext4 recognised, btrfs
replacing it, no loop leaked) still passes against the stricter signature.
Pool names now carry dashes, which zfs_namecheck.c accepts; at 42 characters
they sit far inside the 240 limit and match no reserved prefix.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

2026-08-04 17:58:47 +02:00

..

filesystem

fix(swarm-lab): give each node its own zfs pool name

2026-08-04 17:58:47 +02:00

rescue_index.sh

feat(rescue-index): render the collected tree instead of full paths

2026-08-01 12:05:16 +02:00