zfs raid1 error resilvering and mount

[Konstantin Kuklin]

hi, i have raid1 on zfs with 2 device on pool
first device died and boot from second not working...

i try to get http://mfsbsd.vx.sk/ flash and load from it with zpool import
http://puu.sh/2402E

when  i load zfs.ko and opensolaris.ko i see this message:
Solaris: WARNING: Can't open objset for zroot/var/crash
Solaris: WARNING: Can't open objset for zroot/var/crash

zpool status:
http://puu.sh/2405f

resilvering freeze with:
zpool status -v
        .............
        zroot/usr:<0x28ff>
        zroot/usr:<0x29ff>
        zroot/usr:<0x2aff>
        zroot/var/crash:<0x0>
 root at Flash:/root #

how i can delete or drop it fs zroot/var/crash (1m-10m size i didn`t
remember) and mount other zfs points with my data
-- 
С уважением
Куклин Константин.