Inode usage high
Filesystem has many small files; inode usage at or above 85% of the table. At 100%, file creation fails with ENOSPC even though `df -h` shows free space.
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.