Unable to reduce the mirrored lvol (Mirroed disk failed)

[shikhar_1]

Hi,

I got some issue with mirrored disk of a lvol (lvolab) and i have to replace the failed mirroed disk.

However when i am trying to reduce my lvols related with disks i am getting some issue. If i am wrong then we have to reduce the lvol with the "key" number but i got the procedure.

Can anyone tell me the procedure to reduce the failed disk lvol?

Appreciate the response

[Patrick Wallek · Accepted solution]

Determine the 'pv key' of the failed disk by doing an 'lvdisplay -vk ' for the lvol in question.

Then to reduce the mirror do:

lvreduce -k -m 0 /dev/vg???/lvol??? <pvkey value>

For example:

# lvdisplay -vk /dev/vg00/lvol3
--- Logical volumes ---
LV Name                     /dev/vg00/lvol3
VG Name                     /dev/vg00
LV Permission               read/write
LV Status                   available/syncd
Mirror copies               1
Consistency Recovery        MWC
Schedule                    parallel
LV Size (Mbytes)            544
Current LE                  68
Allocated PE                136
Stripes                     0
Stripe Size (Kbytes)        0
Bad block                   off
Allocation                  strict/contiguous
IO Timeout (Seconds)        default

   --- Distribution of logical volume ---
   PV Name                 LE on PV  PE on PV
   /dev/dsk/c1t0d0         68        68
   /dev/dsk/c2t0d0         68        68

   --- Logical extents ---
   LE    PV1                     PE1   Status 1 PV2                     PE2   Status 2
   00000      0                  00166 current       1                  00166 current
   00001      0                  00167 current       1                  00167 current
   00002      0                  00168 current       1                  00168 current
   00003      0                  00169 current       1                  00169 current

 If I want to reduce the mirror disk, which has a pvkey of '1' in this case, I would do:

lvreduce -k -m 0 /dev/vg00/lvol3 1