ZFS unable to import pool

[Gena Guchin]

Hello FreeBSD users, 

I have this huge problem with my ZFS server. I have accidentally formatted one of the drives in exported ZFS pool. and now I can’t import the pool back. this is extremely important pool for me. device that is missing is still attached to the system. Any help would be greatly appreciated.




#uname -a
FreeBSD XXX 10.0-RELEASE FreeBSD 10.0-RELEASE #0 r260789: Thu Jan 16 22:34:59 UTC 2014     root at snap.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64

#zpool import
   pool: storage
     id: 11699153865862401654
  state: UNAVAIL
 status: One or more devices are missing from the system.
 action: The pool cannot be imported. Attach the missing
        devices and try again.
   see: http://illumos.org/msg/ZFS-8000-6X
 config:

        storage                 UNAVAIL  missing device
          raidz1-0              DEGRADED
            ada3                ONLINE
            ada4                ONLINE
            ada5                ONLINE
            ada6                ONLINE
            248348789931078390  UNAVAIL  cannot open
        cache
          ada1s2
        logs
          ada1s1                ONLINE

        Additional devices are known to be part of this pool, though their
        exact configuration cannot be determined.


# zpool list
NAME    SIZE  ALLOC   FREE    CAP  DEDUP  HEALTH  ALTROOT
zroot   920G  17.9G   902G     1%  1.00x  ONLINE  -

Thanks a lot!

— Gena