Fount this problem today and must share it with you.
01:09:18 root@eeny:~# zpool import tm cannot import 'whatever': no such pool available
Oops, got scared a bit :)
You should not because what follows may help you.
That is assuming the disk with that pool is attached, available and not damaged :D
The pool was found on the disk:
01:09:56 root@eeny:~# zpool import -d /dev/sdc1 pool: whatever id: 6969696969696969696969 state: ONLINE action: The pool can be imported using its name or numeric identifier. config: whatever ONLINE sdc1 ONLINE
And now I mount it:
01:10:44 root@eeny:~# zpool import -d /dev/sdc1 whatever 01:12:37 root@eeny:~# df -h | grep /whatever whatever 3.4T 3.0T 429G 88% /whatever