[mythtv-users] Seagate Lockups (was libraries over 8TB)

Travis Tabbal travis at tabbal.net
Sat Jul 7 17:33:57 UTC 2012

On Sat, Jul 7, 2012 at 11:28 AM, Jay Ashworth <jra at baylink.com> wrote:

> ----- Original Message -----
> > From: "Alexander Fisher" <alex at alexfisher.me.uk>
> > I've also had some odd behavior from one of my non-enterprise Seagate
> > drives. It's firmware locked up the other day, the drive not coming
> > back without a power cycle.
> I believe you had the same problem that I've had on 5 different Seagates
> over the last 4 years:
> There's a black hole somewhere on the drive.  If you never touch it, the
> drive
> works just fine.  But the second you even read one of those sectors, the
> drive adapter falls off line, and Linux can't touch it anymore, and it
> doesn't
> recover until you power the drive off.  Once you do, everything's fine
> until
> you hit that spot again.

My test for new drives is now to put them in a ZFS mirror, and fill them to
100% capacity, then to a zpool scrub on them to make sure they are holding
the data properly. I've found a few bad drives this way that wouldn't have
shown up with normal testing unless I happened to hit that bad block. I
usually repeat the test a few times, by destroying the pool, then starting
over. It takes a long time, but it beats finding out the hard way months
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