On 12 December, 2012 - Thomas Nau sent me these 7,3K bytes:
> Jamie
> We ran Into the same and had to migrate the pool while imported
> read-only. On top we were adviced to NOT use an L2ARC. Maybe you
> should consider that as well
We also ran into something similar, imported read-only and created a new
pool. A few months later, we ran into an L2ARC bug (15809921) to which
we've received an IDR that we have not applied yet.
This bug caused the following:
errors: Permanent errors have been detected in the following files:
<metadata>:<0x132c1f>
on a 3x3 mirrored pool (triple-mirroring), all 9 disks had checksum
errors.
> Thomas
>
>
> Am 12.12.2012 um 19:21 schrieb Jamie Krier <[email protected]>:
>
> > I've hit this bug on four of my Solaris 11 servers. Looking for anyone else
> > who has seen it, as well as comments/speculation on cause.
> >
> > This bug is pretty bad. If you are lucky you can import the pool read-only
> > and migrate it elsewhere.
> >
> > I've also tried setting zfs:zfs_recover=1,aok=1 with varying results.
> >
> >
> >
> > http://docs.oracle.com/cd/E26502_01/html/E28978/gmkgj.html#scrolltoc
> >
> >
> >
> > Hardware platform:
> >
> > Supermicro X8DAH
> >
> > 144GB ram
> >
> > Supermicro sas2 jbods
> >
> > LSI 9200-8e controllers (Phase 13 fw)
> >
> > Zuesram log
> >
> > ZuesIops sas l2arc
> >
> > Seagate ST33000650SS sas drives
> >
> >
> >
> > All four servers are running the same hardware, so at first I suspected a
> > problem there. I opened a ticket with Oracle which ended with this email:
> >
> > ---------------------------------------------------------------------------------------------------------------------------------
> >
> > We strongly expect that this is a software issue because this problem does
> > not happen
> >
> > on Solaris 10. On Solaris 11, it happens with both the SPARC and the X64
> > versions of
> >
> > Solaris.
> >
> >
> >
> > We have quite a few customer who have seen this issue and we are in the
> > process of
> >
> > working on a fix. Because we do not know the source of the problem yet, I
> > cannot speculate
> >
> > on the time to fix. This particular portion of Solaris 11 (the virtual
> > memory sub-system) is quite
> >
> > different than in Solaris 10. We re-wrote the memory management in order
> > to get ready for
> >
> > systems with much more memory than Solaris 10 was designed to handle.
> >
> >
> >
> > Because this is the memory management system, there is not expected to be
> > any
> >
> > work-around.
> >
> >
> >
> > Depending on your company's requirements, one possibility is to use Solaris
> > 10 until this
> >
> > issue is resolved.
> >
> >
> >
> > I apologize for any inconvenience that this bug may cause. We are working
> > on it as a Sev 1 Priority1 in sustaining engineering.
> >
> > ---------------------------------------------------------------------------------------------------------------------------------
> >
> >
> >
> > I am thinking about switching to an Illumos distro, but wondering if this
> > problem may be present there as well.
> >
> >
> >
> > Thanks
> >
> >
> >
> > - Jamie
> >
> > _______________________________________________
> > zfs-discuss mailing list
> > [email protected]
> > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
> _______________________________________________
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/Tomas
--
Tomas Forsman, [email protected], http://www.acc.umu.se/~stric/
|- Student at Computing Science, University of Umeå
`- Sysadmin at {cs,acc}.umu.se
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