ZFS monitoring

[Miroslav Lachman]

Borja Marcos wrote:
>
> Hello,
>
> Some time ago I wrote a FreeBSD data collector for Orca (www.orcaware.com/orca). Seems it wasn't much of a success, but I use it all the time :)
>
> I would like to add some ZFS  aware monitoring. Any suggestions for key statistics that would be useful to see in graphic form? Something like cache hits/misses, etc.

You can do graphs for many things from sysctl kstat.zfs.misc and vfs.zfs
I am personally graphing for example:
kstat.zfs.misc.arcstats.size
kstat.zfs.misc.arcstats.c
vfs.zfs.arc_meta_limit
vfs.zfs.arc_meta_used

But there are other useful values. It depends on usage of the server.

Miroslav Lachman