On Tue, 29 Mar 2011 14:34, mark@ wrote:
On Mon, 28 Mar 2011 13:38:54 -0500 Scot Hetzel  wrote: On Mon, Mar 28, 2011 at 
1:17 PM, Mark Morley  wrote:
Hi there,

I have a small backup server (8.2-STABLE). ???It boots from ufs and has azfs 
pool for backups that consists of 8 drives configured as 4 mirrored devices, 
totally around 2.5 TB.

Been working great, no issues, until the past few days when remote rsyncsto it 
have started to get very slow (it's only at around %50 capacity). ???Rebooting 
it helps for a while, then it gets slow again. ???But this isn't the problem 
now...

After the last reboot, it froze while booting right at the point where the file 
system gets mounted. ???No errors, it just doesn't proceed past the ZFS version 
message.

I rebooted single user and tried to access it with "zpool status", and the command hangs 
in the same way. ???Any attempt to access it ("zfs list", for example) does the same 
thing.

The disks themselves seem fine. ???They are all connected to a pair of Adaptec 
RAID controllers (configured as individual drives, with mirroring handled by 
zfs) and the controller software shows them all to be intact.

I disabled zfs in rc.conf and was able to boot, but I can't access the pool.

Any ideas on how to diagnose and hopefully repair this?


Your going to need to download a recent -CURRENT ISO that contans zfs
v28, then you can try to recover the pool as outlined in this post
http://opensolaris.org/jive/message.jspa?messageID=445269

Well, what I did was rebuild world and kernel top 9.0-CURRENT and reboot.  It 
was able to see and access the zfs file system immediately without having to 
import it.  I did a zpool upgrade to v28 and all seems well so far.


He specifically does not need -9 to get v28 code for this recovery operation. Martin Matuska does a pretty swell job of keeping these [1] up-to-date so in-case something does go wrong it can be fixed fairly quickly without having to go through and rebuild this and that.

1. http://mfsbsd.vx.sk/

--

 Regards,

 J. Hellenthal
 (0x89D8547E)
 JJH48-ARIN

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