freebsd stable - Oct 2013 - ZFS hanging on too hard

Hi all,
I'm trying to setup a ZFS mirror system with a USB disk as backup. The
backup disk is a ZFS pool which I am zfs send'ing to.

However I find that if the disk is disconnected while mounted then things go
pear shaped..
root at gateway:~ # zpool status -v
  pool: backupA
 state: UNAVAIL
status: One or more devices are faulted in response to IO failures.
action: Make sure the affected devices are connected, then run 'zpool
clear'.
   see: http://illumos.org/msg/ZFS-8000-HC
  scan: none requested
config:

	NAME          STATE     READ WRITE CKSUM
	backupA       UNAVAIL      0     0     0
	  1877640355  REMOVED      0     0     0  was /dev/da0

errors: List of errors unavailable (insufficient privileges)

(but I am root..)

root at gateway:~ # zpool online pool /dev/da0
cannot online /dev/da0: no such device in pool

?!

Anyone have any ideas?

--
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C






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----- Original Message ----- 
From: "Daniel O'Connor" <doconnor at
gsoft.com.au>
> Hi all,
> I'm trying to setup a ZFS mirror system with a USB disk as backup. The
backup disk is a ZFS pool which I am zfs send'ing to.
> 
> However I find that if the disk is disconnected while mounted then things
go pear shaped..
> root at gateway:~ # zpool status -v
>   pool: backupA
>  state: UNAVAIL
> status: One or more devices are faulted in response to IO failures.
> action: Make sure the affected devices are connected, then run 'zpool
clear'.
>    see: http://illumos.org/msg/ZFS-8000-HC
>   scan: none requested
> config:
> 
>  NAME          STATE     READ WRITE CKSUM
>  backupA       UNAVAIL      0     0     0
>    1877640355  REMOVED      0     0     0  was /dev/da0
> 
> errors: List of errors unavailable (insufficient privileges)
> 
> (but I am root..)
> 
> root at gateway:~ # zpool online pool /dev/da0
> cannot online /dev/da0: no such device in pool
> 
> ?!
> 
> Anyone have any ideas?
First "pool" is not your pool name its backupA so try:
zpool online backupA /dev/da0

If that still fails try:
zpool online backupA 1877640355

    Regards
    Steve

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