ZFS bug or feature

[Tom Evans]

On Tue, Apr 22, 2014 at 5:18 PM, Andrey Fesenko <f0andrey at gmail.com> wrote:
> After detach ada0 and attach him (reboot between that)
>
> boot only one disk
> Apr 17 13:33:52 x220 kernel: ada0 at ahcich2 bus 0 scbus0 target 0 lun 0
> Apr 17 13:33:52 x220 kernel: ada0: <OCZ-NOCTI 2.15> ATA-8 SATA 2.x device
> Apr 17 13:33:52 x220 kernel: ada0: Serial Number OCZ-J8928HU1G10KR9XM
> Apr 17 13:33:52 x220 kernel: ada0: 300.000MB/s transfers (SATA 2.x,
> UDMA6, PIO 8192bytes)
> Apr 17 13:33:52 x220 kernel: ada0: Command Queueing enabled
> Apr 17 13:33:52 x220 kernel: ada0: 114473MB (234441648 512 byte
> sectors: 1H 63S/T 65535C)
> Apr 17 13:33:52 x220 kernel: ada0: Previously was known as ad4
>
> After attach ada0 im see this
>
> # camcontrol devlist
> <Corsair Neutron SSD M206>         at scbus0 target 0 lun 0 (ada0,pass0)
> <OCZ-NOCTI 2.15>                   at scbus1 target 0 lun 0 (ada1,pass1)
>
> # zpool status
>   pool: x220pool
>  state: ONLINE
> status: Some supported features are not enabled on the pool. The pool can
>         still be used, but some features are unavailable.
> action: Enable all features using 'zpool upgrade'. Once this is done,
>         the pool may no longer be accessible by software that does not support
>         the features. See zpool-features(7) for details.
>   scan: resilvered 42.4M in 0h0m with 0 errors on Thu Apr 17 13:48:42 2014
> config:
>
>         NAME                                     STATE     READ WRITE CKSUM
>         x220pool                                 ONLINE       0     0     0
>           mirror-0                               ONLINE       0     0     0
>             diskid/DISK-OCZ-J8928HU1G10KR9XMs1a  ONLINE       0     0     0
>             ada0s1a                              ONLINE       0     0     0
>
> errors: No known data errors
>
> # gpart show
> =>       63  468862065  ada0  MBR  (224G)
>          63  234441585     1  freebsd  (112G)
>   234441648  234420480     2  freebsd  (112G)
>
> =>        0  234441585  ada0s1  BSD  (112G)
>           0  234441585       1  freebsd-zfs  (112G)
>
> =>       63  234441585  diskid/DISK-OCZ-J8928HU1G10KR9XM  MBR  (112G)
>          63  234441585                                 1  freebsd
> [active]  (112G)
>
> =>        0  234441585  diskid/DISK-OCZ-J8928HU1G10KR9XMs1  BSD  (112G)
>           0  234441585                                   1  freebsd-zfs  (112G)
>
> Apr 17 13:48:43 x220 kernel: ada0 at ahcich0 bus 0 scbus0 target 0 lun 0
> Apr 17 13:48:43 x220 kernel: ada0: <Corsair Neutron SSD M206> ATA-8
> SATA 3.x device
> Apr 17 13:48:43 x220 kernel: ada0: Serial Number 1240792700001802000A
> Apr 17 13:48:43 x220 kernel: ada0: 600.000MB/s transfers (SATA 3.x,
> UDMA6, PIO 8192bytes)
> Apr 17 13:48:43 x220 kernel: ada0: Command Queueing enabled
> Apr 17 13:48:43 x220 kernel: ada0: 228936MB (468862128 512 byte
> sectors: 16H 63S/T 16383C)
> Apr 17 13:48:43 x220 kernel: ada0: Previously was known as ad4
> Apr 17 13:48:43 x220 kernel: ada1 at ahcich2 bus 0 scbus1 target 0 lun 0
> Apr 17 13:48:43 x220 kernel: ada1: <OCZ-NOCTI 2.15> ATA-8 SATA 2.x device
> Apr 17 13:48:43 x220 kernel: ada1: Serial Number OCZ-J8928HU1G10KR9XM
> Apr 17 13:48:43 x220 kernel: ada1: 300.000MB/s transfers (SATA 2.x,
> UDMA6, PIO 8192bytes)
> Apr 17 13:48:43 x220 kernel: ada1: Command Queueing enabled
> Apr 17 13:48:43 x220 kernel: ada1: 114473MB (234441648 512 byte
> sectors: 1H 63S/T 65535C)
> Apr 17 13:48:43 x220 kernel: ada1: Previously was known as ad6
>
> # zpool history -il | tail -6
> 2014-04-17.13:33:51 [txg:8004153] open pool version 5000; software
> version 5000/5; uts  11.0-CURRENT 1100005 amd64 [on x220.local]
> 2014-04-17.13:48:36 [txg:8004321] open pool version 5000; software
> version 5000/5; uts  11.0-CURRENT 1100005 amd64 [on x220.local]
> 2014-04-17.13:48:41 [txg:8004324] scan setup func=2 mintxg=8004151
> maxtxg=8004320 [on x220.local]
> 2014-04-17.13:48:42 [txg:8004325] scan done complete=1 [on x220.local]
> 2014-04-17.13:53:53 zpool clear x220pool [user 0 (root) on x220.local]

I'm confused, what is the bug or feature? Has it added the disk with
the wrong label? You can correct that with an zpool export x220pool /
zpool import -d /dev/diskid x220pool

Cheers

Tom