Date: Fri, 29 Jun 2012 23:40:11 GMT From: George Hartzell <hartzell@alerce.com> To: freebsd-fs@FreeBSD.org Subject: Re: kern/166566: [zfs] zfs split renders 2 disk (MBR based) mirror unbootable Message-ID: <201206292340.q5TNeBam097059@freefall.freebsd.org>
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The following reply was made to PR kern/166566; it has been noted by GNATS.
From: George Hartzell <hartzell@alerce.com>
To: Andriy Gapon <avg@FreeBSD.org>
Cc: hartzell@alerce.com,
bug-followup@FreeBSD.org
Subject: Re: kern/166566: [zfs] zfs split renders 2 disk (MBR based) mirror
unbootable
Date: Fri, 29 Jun 2012 16:33:37 -0700
Andriy Gapon writes:
> on 28/06/2012 00:53 George Hartzell said the following:
> [...]
> > I thought the following would work, but it does not.
> >
> > zpool split -R /zsplitroot zroot zsplitroot
> > zpool status # shows both pools.
> > mount -t zfs zsplitroot /zsplitroot # my zfs stuff doesn't auto mount
> > cp /boot/zfs/zpool.cache /zsplitroot/boot/zfs
> > perl -pi.bak -e 's|zfs:zroot|zfs:zsplitroot|' /zsplitroot/boot/loader.conf
> > umount /zsplitroot
> >
> > It fails to mount zsplitroot. Worse, setting vfs.zfs.debug=1 results
> > in no additional output, just that the error is number 2.
> >
> > Any idea what I'm missing?
>
>
> /boot/zfs/zpool.cache after split contains only information about zroot. Thus
> it's kind of useless on zsplitroot.
> I think that you need to do zpool import -R ... -c ... zsplitroot and copy the
> proper cache file.
I thought that adding the "-R /zsplitroot" arg to the zpool split so
that also did the import would result in a zpool.cache file that
contained by. zpool status after the split shows both pool, which
I didn't think was the case if you don't use -R.
g.
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