zfs discuss - Jun 2010 - zfs failsafe pool mismatch

I have a customer that described this issue to me in general terms.

I''d like to know how to replicated it, and what the best practice is to
a avoid the issue, or fix it in an accepted manner.

If they kernel patch, and reboot they may get messages informing them that the
pool version is down rev''d.  If they act on the message and upgrade the
pool version, then have to boot from the failsafe it fails as that kernel does
not support that pool version.

What would be a way to fix this,  and should we allow they catch to even happen?

Thanks
-- 
This message posted from opensolaris.org

Hi Shawn,

I think this can happen if you apply patch 141445-09.
It should not happen in the future.

I believe the workaround is this:

1. Boot the system from the correct media.

2. Install the boot blocks on the root pool disk(s).

3. Upgrade the pool.

Thanks,

Cindy

On 06/24/10 09:24, Shawn Belaire wrote:
> I have a customer that described this issue to me in general terms.
> 
> I''d like to know how to replicated it, and what the best practice
is to a avoid the issue, or fix it in an accepted manner.
> 
> If they kernel patch, and reboot they may get messages informing them that
the pool version is down rev''d.  If they act on the message and upgrade
the pool version, then have to boot from the failsafe it fails as that kernel
does not support that pool version.
> 
> What would be a way to fix this,  and should we allow they catch to even
happen?
> 
> Thanks