Seeing the dreaded "ZFS: i/o error - all block copies
unavailable" on 9.0-CURRENT
Pegasus Mc Cleaft
ken at mthelicon.com
Wed Feb 17 18:50:04 UTC 2010
Chris,
One other thing I just thought of...
On all my machines, I have never used the /dev/gpt/ device.. I have
always used the absolute name /dev/ada0p3, etc..
Peg
On Wednesday 17 February 2010 18:45:47 Chris wrote:
> Pegasus,
>
> Thanks for the tip. I'll give it a shot. If it is the case, then the
> RootOnZFS wiki guides need to be updated to account for that. They all
> currently say to use vfs.root.mountfrom="zfs:zroot" in loader.conf
>
> Thanks,
> Chris
>
> On Wed, Feb 17, 2010 at 1:40 PM, Pegasus Mc Cleaft <ken at mthelicon.com>
wrote:
> > Hello Chris, Scott & Current
> >
> > I use gptzfsboot on my AMD64 (current) machine all the time and
> > also on my laptop. I am not sure if this will cause the problem you are
> > seeing but I know I ran into a lot of trouble depending on what type of
> > pool I was creating.
> >
> > I believe this is correct, and if I am not than I apologise in
> > advance, but....
> >
> > If you are trying to boot off a linear type pool (A single disk or
> > a mirror) your bootable filing system has to be a zfs filing system
> > beneath the root pool (IE: zroot/boot). If you are trying to boot off a
> > zraid pool, your bootable filing system must be the root filing system of
> > the pool (IE: zroot)
> >
> > You must also include the appropriate declaration in the
> > /boot/loader.conf file:
> >
> > (for a zraid pool)
> > zfs_load="YES"
> > vfs.root.mountfrom="zfs:zpool"
> >
> > (for a linear type)
> > zfs_load="YES"
> > vfs.root.mountfrom="zfs:zpool/root"
> >
> > If I try any other method, zboot explodes in a myriad of different
> > ways.
> >
> > I hope this helps
> > Peg
> >
> > On Wednesday 17 February 2010 02:49:56 Chris wrote:
> >> Scot,
> >>
> >> I did, as part of step 7 in section 1:
> >>
> >> 7. Create ZFS Pool zroot
> >>
> >> Fixit# mkdir /boot/zfs
> >> Fixit# zpool create zroot /dev/gpt/disk0
> >> Fixit# zpool set bootfs=zroot zroot
>
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