ZFS pool unhealthy
ZFS pool in non-OPTIMAL state. Severity scales with vdev redundancy class (Crucible v0.10.4+): SUSPENDED pools and FAULTED top-level vdevs page critical; DEGRADED on single/raidz1/mirror_2way pages critical; raidz3/mirror_3way+ pages warning. L2ARC failures emit at info severity (no data loss). SLOG faults handled by zfs_slog_faulted.
Remediation
When this rule fires on one of your servers, the dashboard alert detail page renders the full remediation guidance: the command to run, what to verify after, and Furnace's annotation for your specific distro + hardware. Sign in at app.glassmkr.com to see the live alert.