LVM - break mirror taking out orignal copy


 
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Operating Systems Linux LVM - break mirror taking out orignal copy
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Old 01-12-2012
LVM - break mirror taking out orignal copy

Hi Guys,

I have a mirrored LVM volume, and wish to break the mirror leaving only copy1 (effectively removing copy 0).

Here's the config:
Code:
# lvs -a -o +devices
  lvdata            vg01 mwi-ao 2.19T                    lvdata_mlog 100.00         lvdata_mimage_0(0),lvdata_mimage_1(0)
  [lvdata_mimage_0] vg01 iwi-ao 2.19T                                               /dev/dm-15(0)
  [lvdata_mimage_0] vg01 iwi-ao 2.19T                                               /dev/dm-12(0)
  [lvdata_mimage_0] vg01 iwi-ao 2.19T                                               /dev/dm-14(0)
  [lvdata_mimage_0] vg01 iwi-ao 2.19T                                               /dev/dm-13(0)
  [lvdata_mimage_1] vg01 iwi-ao 2.19T                                               /dev/dm-18(0)
  [lvdata_mimage_1] vg01 iwi-ao 2.19T                                               /dev/dm-19(0)
  [lvdata_mimage_1] vg01 iwi-ao 2.19T                                               /dev/dm-20(0)
  [lvdata_mimage_1] vg01 iwi-ao 2.19T                                               /dev/dm-21(0)
  [lvdata_mlog]     vg01 lwi-ao 4.00M                                               /dev/dm-22(0)

Code:
 
# lvconvert -m0 vg01/lvdata

I think running the above example command will convert the mirror to a linear volume running on copy 0. Any ideas how I can do the same, but leave it running on copy 1?

Thanks in advance.

---------- Post updated at 03:26 AM ---------- Previous update was at 01:59 AM ----------

i figured it out cheers. You need to specify the devices you wish to remove from the mirror, after the lvconvert command.

Code:
# lvconvert -m0 vg01/lvdata /dev/dm-12 /dev/dm-13 /dev/dm-14 /dev/dm-15

Code:
lvs -a -o +devices
  lvdata      vg01 -wi-ao 2.19T                                       /dev/dm-18(0)
  lvdata      vg01 -wi-ao 2.19T                                       /dev/dm-19(0)
  lvdata      vg01 -wi-ao 2.19T                                       /dev/dm-20(0)
  lvdata      vg01 -wi-ao 2.19T                                       /dev/dm-21(0)

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