zfs i/o error - all block copies unavailable

[Eugene M. Zheganin]

Hi.

On 12.12.2013 20:03, Eugene M. Zheganin wrote:
> I totally forgot to attach the "zfs list" list and "zpool list" output,
> and now it's offine, but it's usage is above 95% now, and it has only
> few dozens gigs left out of 2.6T.
> As soon as I will boot it up from a separate boot I will attach this data.
>
>

I'm apologizing sincerely for the amount of letters.
I booted up from the UFS drive:

===Cut===
# zpool list
NAME      SIZE  ALLOC   FREE    CAP  DEDUP  HEALTH  ALTROOT
zfsroot  2,73T  2,59T   138G    95%  1.00x  DEGRADED  /zfsroot

# zfs list -t all
NAME                          USED  AVAIL  REFER  MOUNTPOINT
zfsroot                      2,59T  94,7G   836M  legacy
zfsroot/public               2,58T  94,7G  2,58T  /zfsroot/usr/local/public
zfsroot/tmp                  5,42M  94,7G  5,42M  /zfsroot/tmp
zfsroot/usr                  8,36G  94,7G  8,05G  /zfsroot/usr
zfsroot/usr/home             9,97M  94,7G  9,97M  /zfsroot/usr/home
zfsroot/usr/ports            66,5K  94,7G  24,5K  /zfsroot/usr/ports
zfsroot/usr/ports/distfiles    21K  94,7G    21K 
/zfsroot/usr/ports/distfiles
zfsroot/usr/ports/packages     21K  94,7G    21K 
/zfsroot/usr/ports/packages
zfsroot/usr/src               314M  94,7G   314M  /zfsroot/usr/src
zfsroot/var                   105M  94,7G  4,64M  /zfsroot/var
zfsroot/var/crash            22,5K  94,7G  22,5K  /zfsroot/var/crash
zfsroot/var/db               88,5M  94,7G  85,7M  /zfsroot/var/db
zfsroot/var/db/pkg           2,87M  94,7G  2,87M  /zfsroot/var/db/pkg
zfsroot/var/empty              21K  94,7G    21K  /zfsroot/var/empty
zfsroot/var/log              1,14M  94,7G  1,14M  /zfsroot/var/log
zfsroot/var/mail             11,0M  94,7G  11,0M  /zfsroot/var/mail
zfsroot/var/run              46,5K  94,7G  46,5K  /zfsroot/var/run
zfsroot/var/tmp                23K  94,7G    23K  /zfsroot/var/tmp
===Cut===

Thanks.
Eugene.