Werk #19296: Fix graph unit display for Snapshots Volume service
| Component | Checks & agents | ||||||
| Title | Fix graph unit display for Snapshots Volume service | ||||||
| Date | Mar 9, 2026 | ||||||
| Level | Trivial Change | ||||||
| Class | Bug Fix | ||||||
| Compatibility | Compatible - no manual interaction needed | ||||||
| Checkmk versions & editions |
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Previously, the Snapshots Volume service graph displayed snapshot usage
in raw bytes, showing y-axis values like 14,572,300,000,000 instead of
a readable 13.3 TiB. Large values were also getting truncated on the
y-axis. The graph now auto-scales to KiB, MiB, GiB, or TiB — consistent
with other NetApp volume services.
Additionally, when a snapshot reserve is configured, the graph now also shows the total snapshot reserve size as a reference line, making it easy to see at a glance how much of the reserve is in use.
A new metric snapshot_reserve_used_percent is now emitted, representing
the percentage of the snapshot reserve that is currently in use. A
corresponding perfometer displays this ratio on a 0–100% scale, giving
a quick visual overview directly in the service list.
Existing metric history is preserved automatically. No action required after upgrading.