ZFS in FreeBSD lacks at least one major feature from the Solaris
version: hot spares. There is a PR open at
http://www.freebsd.org/cgi/query-pr.cgi?pr=134491, but there hasn't been
any motion/thoughts posted on it since its creation almost one year ago.
I'm aware that on Solaris, hot spare replacement is handled by a few
Solaris-specific daemons, zfs-retire and zfs-diagnose, which both plug
into the Solaris FMA (Fault Management Architecture). Have there been
any thoughts on porting these over or getting something similar running
within FreeBSD? With all of the recent SATA/SAS CAM hotplug work now
committed, it would be nice to have automatic replacement of hot spares
with a future hot-replacement of the failed drive.
On the other side, I'd be interested in hearing if anyone has had
success in rolling their own scripted solution: i.e. something which
polls 'zpool status' looking for failed drives and performing hot-spare
replacements automatically.
Thanks,
Steve Polyack
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