zfs discuss - Sep 2008 - [Fwd: Another ZFS question]

Hi

Please see the query below.  Appreciate any help.

Rgds
jonathan



-------- Original Message --------

Would you mind helping me ask your tech guy whether there will be 
repercussions when I try to run this command in view of the situation below:
#  /*zpool add -f zhome raidz c6t6006016056AC1A00C8FB7A6346F8DB11d0 
c6t6006016056AC1A00D034FA5246F8DB11d0*/

---

bash-3.00# zpool status
  pool: zhome
 state: ONLINE
status: One or more devices has experienced an error resulting in data
        corruption.  Applications may be affected.
action: Restore the file in question if possible.  Otherwise restore the
        entire pool from backup.
   see: http://www.sun.com/msg/ZFS-8000-8A
 scrub: scrub in progress, 3.05% done, 13h52m to go
config:

        NAME                                       STATE     READ WRITE 
CKSUM
        zhome                                      ONLINE       0     0 
2.20K
          raidz1                                   ONLINE       0     0 
2.20K
            c6t60060160A16D1B003E5B94CAEC46DC11d0  ONLINE       0     
0     0
            c6t60060160A16D1B005A7106AEEC46DC11d0  ONLINE       0     
0     0
            c6t60060160A16D1B007AC27FB9EC46DC11d0  ONLINE       0     
0     0
            c6t60060160A16D1B003870C8A5EC46DC11d0  ONLINE       0     
0     0

errors: 1 data errors, use ''-v'' for a list

  pool: zhome2
 state: ONLINE
 scrub: none requested
config:

        NAME                                     STATE     READ WRITE CKSUM
        zhome2                                   ONLINE       0     0     0
          c6t6006016056AC1A004069225BE146DC11d0  ONLINE       0     0     0
          c6t6006016056AC1A008253EF629235DC11d0  ONLINE       0     0     0

errors: No known data errors
bash-3.00# zpool add -n zhome raidz 
c6t6006016056AC1A00C8FB7A6346F8DB11d0 
c6t6006016056AC1A00D034FA5246F8DB11d0 c6t6006016056AC1A007860F66946F8DB11d0
invalid vdev specification
use ''-f'' to override the following errors:
mismatched replication level: pool uses 4-way raidz and new vdev uses 
3-way raidz

Thanks and regards,
Andre

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On Sat, Sep 27, 2008 at 1:30 PM, jonathan sai <Jonathan.Sai at sun.com>
wrote:
>
> Would you mind helping me ask your tech guy whether there will be
> repercussions when I try to run this command in view of the situation
below:
> #  *zpool add -f zhome raidz c6t6006016056AC1A00C8FB7A6346F8DB11d0
> c6t6006016056AC1A00D034FA5246F8DB11d0*
>

It can be done.  But with only two devices they should rather be mirrored
than made into a raidz.

Maybe wait for the scrub to continue and monitor the data errors before
proceeding.
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