Can FreeNAS send email alert when zpool free space goes low?

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Jimm Chen

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Apr 20, 2015
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Can FreeNAS send email alert when zpool/zvol free space goes low?

I browse over freenas(9.3) WebUI, unable to find something like this. If this feature is available, I think there should be a place to assign the threshold you want, for each zpool and zvol you have configured. For example, I hope to get notified when my zpool free space(as ``df`` shows) goes below 100GB, or when any of my zvols(as ``zfs list`` shows) free space goes below 100GB.

I think this is an important feature for a production multi-user FreeNAS deployment.

What's more, I find it more important if I turn on Periodic Snapshots. Imagine, I have a 1800GB zpool, and I create a non-sparse zvol(900G) for an iSCSI LUN so that a client OS(Linux for example) can use this LUN as his data disk; the Linux admin can check from Linux OS perspective how much space he has used, but he cannot know how much extra(the REFER size) FreeNAS-side zpool space has been consumed after 30 zvol snapshots have been taken. In the worse case, total REFER size may be up to 900G*30, isn't it?
 
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Jan 9, 2015
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It will send you a email when you hit 80% capacity.
 
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