LVM thin pool metadata near full
LVM thin pool metadata volume at or above 80%. Metadata exhaustion is silent and catastrophic: writes across all thin volumes in the pool start failing in unpredictable ways at 100%. Extend the metadata volume before it fills.
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.