Mh, I fully agree that I don't expect '(cd /proc; echo *)' to hang because of the disk being full. However, with my current setup, the alerting checks all disk

Mh, I fully agree that I don't expect '(cd /proc; echo *)' to hang because of the disk being full. However, with my current setup, the alerting checks all disks of all monitored systems every minute, and once a single of them exceeds 80%, we get alerts. That's no smart setup, that's stock nagios/iciniga/icinga2 with stock nrpe checks. This is considered a very cheap and basic setup when running servers. We've had this on our solaris systems out of the box. And practically, this is an alert with a very high true positive rate and very few false positive alerts. Most false positives we've had to deal with had been with systems with > 3-4 Tb of storage. And systems filling up more than 5% - 10% of their storage per minute tend to trigger other stock alerts as well.