[BBLISA] Fileserver opinion

[David Miller]

What does your zpool look like?  Ideally if you're using RAIDz or RAIDz2
then you should be using multiple RAIDz sets in the pool.  This way IO is
stripped across the RAIDz sets and any degradation, and recovery, should
only involve the smaller RAIDz set.  Which should be relatively quick
depending on the size and type of drives involved.

I just had to resliver a mirrored pool of 250GB drives that I have in my
home file server.  It took about 5 hours for it to resliver.  But ZFS only
reslivers the used space and not the entire drive like with hardware
solutions.  So ZFS should rebuild faster than most other solutions.
--
David

On Fri, Aug 13, 2010 at 1:07 PM, Toby Burress <kurin at delete.org> wrote:

> On Fri, Aug 13, 2010 at 12:11:51PM -0400, Rob Taylor wrote:
> > How active is that system and how big is the drive that's resilvering?
>
> Right now, except for the resilver, it's doing nothing.  For about 8
> hours a day it's copying data from production servers.
>
>  replacing    DEGRADED     0     0 80.1M
>    c4t11d0p0  UNAVAIL      0     0     0  cannot open
>    c4t7d0p0   ONLINE       0     0     0  660G resilvered
>
>  backups                18T   13T  4.5T  75% /backups
>
> It's a Random Box of Parts with 16 1.5TB disks running OpenSolaris
> (which I've come to discover is weird and strange and I dislike it).
> Its sister server is FreeBSD with 24 2TB disks, and I haven't yet had
> to replace a drive, but I'm hoping it won't take six days.
>
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