We are in the process of moving to a new storage array and would like to mirror our current VG's to this new storage array.

So far I have been successful in establishing the mirrored VG's by extending the VG and then running the following command.

lvconvert -m1 vg00/<lvname>

Like I said this established the mirror properly. However I don't know how to break this mirror so I end up on the new disks.

I know to break this mirror I can run the above command again with a -m0 instead of an -m1 but that puts me back on the old disks.

Any information would be helpful,

Thanks
Barrett

What OS are you using here? I've never seen a Linux distro with support for LVM mirroring. The only platform I've seen this on is HP-UX...in which case you would use the commands like so...

lvextend -m1 /dev/vg00/lvol1 <new_pv>
lvreduce -m0 /dev/vg00/lvol1 <old_pv>

This functionality is the same with RHEL4/5 and it works fine.

What I can't figure out is how to split this mirror so I can utilize the new disks with which I created the mirror.

For example, I have disk A and I mirror to disk B. When I split the mirror I want to utilize disk B in the LV not disk A. I believe in HPUX our admins use the lvsplit command which is not available in RHEL....

Converting the LV back to "m0" will do the trick. I mean

#lvconvert m0 lvname

Once done simply re-create the disk partition on disk one and also make sure that you rescan your pv's.