zfs discuss - Jul 2009 - No ZFS snapshot since upgrade to 2009.06

I''ve upgrade my OpenSolaris 2008.11 to 2009.06. During that process it
created a new boot environment:
BE            Active Mountpoint Space Policy Created          
--            ------ ---------- ----- ------ -------          
opensolaris   NR     /          7.53G static 2009-01-03 13:18 
opensolaris-1 -      -          2.80G static 2009-07-20 22:38

But now, all my zfs snapshot services are in maintenance mode:
svc:/system/filesystem/zfs/auto-snapshot:frequent (ZFS automatic snapshots)
 State: maintenance since Thu Jul 23 20:21:29 2009
Reason: Restarter svc:/system/svc/restarter:default gave no explanation.
   See: http://sun.com/msg/SMF-8000-9C
   See: /var/svc/log/system-filesystem-zfs-auto-snapshot:frequent.log
Impact: 1 dependent service is not running:
        svc:/application/time-slider:default
etc

The logs say that my host tried to create a snapshot, but couldn''t
because ''dataset is busy'':
cannot create snapshot ''rpool/ROOT/opensolaris-1 at
zfs-auto-snap:frequent-2009-07-23-20:21'': dataset is busy
no snapshots were created
Error: Unable to take recursive snapshots of rpool/ROOT at
zfs-auto-snap:frequent-2009-07-23-20:21.
Moving service svc:/system/filesystem/zfs/auto-snapshot:frequent to maintenance
mode.

Anyone knows how to fix this ? 
What is that boot environment opensolaris-1 for ? can I erase it safely ?

Regards
-- 
This message posted from opensolaris.org

This is probably bug #6462803. The work-around goes something like this:

$ pfexec bash
# beadm mount opensolaris /mnt
# beadm unmount opensolaris
# svcadm clear svc:/system/filesystem/zfs/auto-snapshot:frequent
# svcadm clear svc:/system/filesystem/zfs/auto-snapshot:hourly
# svcadm clear svc:/system/filesystem/zfs/auto-snapshot:daily
# svcs -a | grep snapshot

The last command should show that the services are back online.

n


On Thu, Jul 23, 2009 at 12:31 PM, Axelle
Apvrille<no-reply at opensolaris.org> wrote:
> I''ve upgrade my OpenSolaris 2008.11 to 2009.06. During that
process it created a new boot environment:
> BE ? ? ? ? ? ?Active Mountpoint Space Policy Created
> -- ? ? ? ? ? ?------ ---------- ----- ------ -------
> opensolaris ? NR ? ? / ? ? ? ? ?7.53G static 2009-01-03 13:18
> opensolaris-1 - ? ? ?- ? ? ? ? ?2.80G static 2009-07-20 22:38
>
> But now, all my zfs snapshot services are in maintenance mode:
> svc:/system/filesystem/zfs/auto-snapshot:frequent (ZFS automatic snapshots)
> ?State: maintenance since Thu Jul 23 20:21:29 2009
> Reason: Restarter svc:/system/svc/restarter:default gave no explanation.
> ? See: http://sun.com/msg/SMF-8000-9C
> ? See: /var/svc/log/system-filesystem-zfs-auto-snapshot:frequent.log
> Impact: 1 dependent service is not running:
> ? ? ? ?svc:/application/time-slider:default
> etc
>
> The logs say that my host tried to create a snapshot, but couldn''t
because ''dataset is busy'':
> cannot create snapshot ''rpool/ROOT/opensolaris-1 at
zfs-auto-snap:frequent-2009-07-23-20:21'': dataset is busy
> no snapshots were created
> Error: Unable to take recursive snapshots of rpool/ROOT at
zfs-auto-snap:frequent-2009-07-23-20:21.
> Moving service svc:/system/filesystem/zfs/auto-snapshot:frequent to
maintenance mode.
>
> Anyone knows how to fix this ?
> What is that boot environment opensolaris-1 for ? can I erase it safely ?
>
> Regards
> --
> This message posted from opensolaris.org
> _______________________________________________
> zfs-discuss mailing list
> zfs-discuss at opensolaris.org
> http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
>

Ok, I''ve found the solution to my problem on Internet here:
http://sigtar.com/2009/03/17/troubleshooting-time-slider-zfs-snapshots/

This was indeed caused by the old boot environment. This is how to solve it:
- disable snapshots on the old boot environment:
pfexec zfs set com.sun:auto-snapshot=false rpool/ROOT/opensolaris-1
- clear zfs snapshot services
pfexec svcadm clear auto-snapshot:frequent
pfexec svcadm clear auto-snapshot:hourly
pfexec svcadm clear auto-snapshot:daily
- launch the time slider and enable zfs snapshots on the appropriate systems
- check the services are online: svcs 
...
online         21:50:20 svc:/system/filesystem/zfs/auto-snapshot:hourly
online         21:50:26 svc:/system/filesystem/zfs/auto-snapshot:frequent
online         21:50:36 svc:/system/filesystem/zfs/auto-snapshot:daily

Hurray !
-- Axelle
-- 
This message posted from opensolaris.org