In an example (that has now been removed from our help page) we described how the snapshots check could be used with the metric number to find volumes that don’t have any snapshots. Unfortunately, this example was misleading and lead to false negatives.

For this use case we are preparing a separate check SnapshotLessVolume that will be included in the next release 3.9.1!

Any customers currently using snapshots should verify their configuration and replace any service checks using Snapshots with --metric=number and a threshold of 0 (--warning=0 oder --critical=0) and use SnapshotLessVolume instead.