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beatzaplentyandClaude Sonnet 4.6 367158548e fix(ha): wrap crm-fence-peer.sh to set PATH for kernel UMH callout ...

When the DRBD kernel module invokes fence-peer via the User Mode Helper
mechanism it provides a minimal PATH that omits /run/current-system/sw/bin.
crm-fence-peer.sh calls cibadmin, crm_mon etc.; without those in PATH a
pipeline breaks with SIGPIPE.  A signal-killed process has WEXITSTATUS()==0,
so the kernel sees exit code 0, logs "fence-peer helper broken, returned 0",
and retries forever — blocking Pacemaker failover completely.

Fix: use pkgs.writeShellScript to create thin PATH-fixing wrappers in the
Nix store.  The wrappers prepend /run/current-system/sw/bin before exec-ing
the real crm-fence-peer.sh / crm-unfence-peer.sh, giving them a working
Pacemaker toolchain regardless of what PATH the kernel provides.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

2026-07-29 01:22:46 +10:00

..

cluster-config.nix

fix(ha): wrap crm-fence-peer.sh to set PATH for kernel UMH callout

2026-07-29 01:22:46 +10:00

iscsi-target.nix

fix(ha): all 7 acceptance tests pass — targetctl, fencing, failover, data integrity

2026-07-28 19:03:39 +10:00

pacemaker-stack.nix

feat(ha): add NixOS modules for DRBD+XFS+LIO+Corosync+Pacemaker HA stack

2026-07-27 09:13:55 +10:00