ZFS pool faulted (corrupt metadata) but the disk data appears ok...

[Michael Ware]

You can mount using a live cd if you haven't tried yet.  Maybe try the 10.1
iso and see if you have any luck.
Mike
On Feb 6, 2015 3:21 AM, "Michelle Sullivan" <michelle at sorbs.net> wrote:

> Xin Li wrote:
> > -----BEGIN PGP SIGNED MESSAGE-----
> > Hash: SHA512
> >
> >
> >
> > On 2/5/15 18:20, Michelle Sullivan wrote:
> >
> >> Xin Li wrote: On 02/05/15 17:36, Michelle Sullivan wrote:
> >>
> >>
> >>>>>> This suggests the pool was connected to a different system,
> >>>>>> is that the case?
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>> No.
> >>>>>
> >>>>>
> >> Ok, that's good.  Actually if you have two heads that writes to
> >> the same pool at the same time, it can easily enter an
> >> unrecoverable state.
> >>
> >>
> >>
> >>>>>> It's hard to tell right now, and we shall try all possible
> >>>>>> remedies but be prepared for the worst.
> >>>>>>
> >>>>>>
> >>>>> I am :(
> >>>>>
> >>>>>
> >> The next thing I would try is to:
> >>
> >> 1. move /boot/zfs/zpool.cache to somewhere else;
> >>
> >>
> >>
> >>> There isn't one.  However 'cat'ing the inode I can see there was
> >>> one...
> >>>
> >>>
> <83>^LR^@^L^@^D^A.^@^@^@<80>^LR^@<F4>^A^D^B..^@^@<89>^LR^@^X^@^H^Ozpool.cache.tmp^@<89>^LR^@<D0>^A^H^Kzpool.cache^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
> >>>
> >>>
> >>>
> >
> ^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@^@
> >
> >> 2. zpool import -f -n -F -X storage and see if the system would
> >> give you a proposal.
> >>
> >>
> >>
> >>> This crashes (without -n) the machine out of memory.... there's
> >>> 32G of RAM. /boot/loader.conf contains:
> >>>
> >>> vfs.zfs.prefetch_disable=1 #vfs.zfs.arc_min="8G"
> >>> #vfs.zfs.arc_max="16G" #vm.kmem_size_max="8" #vm.kmem_size="6G"
> >>> vfs.zfs.txg.timeout="5" kern.maxvnodes=250000
> >>> vfs.zfs.write_limit_override=1073741824 vboxdrv_load="YES"
> >>>
> >
> > Which release this is?  write_limit_override have been removed quite a
> > while ago.
> >
>
> FreeBSD colossus 9.2-RELEASE-p15 FreeBSD 9.2-RELEASE-p15 #0: Mon Nov  3
> 20:31:29 UTC 2014
> root at amd64-builder.daemonology.net:/usr/obj/usr/src/sys/GENERIC  amd64
>
>
> > I'd recommend using a fresh -CURRENT snapshot if possible (possibly
> > with -NODEBUG kernel).
> >
>
> I'm sorta afraid to try and upgrade it at this point.
>
> Michelle
>
> --
> Michelle Sullivan
> http://www.mhix.org/
>
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