I have LVM configured on top of RAID, but I was wondering how one would do RAID on top of LVM.
Here's the scenario:
I have a RAID 6 array with 4 X 3TB drives. 1 drive failed, badblocks reported 73 bad blocks (concentrated in a roughly 400 block span).
I'd like to create a partition before and after the spot where the bad blocks are, and create a logical volume to try and add it to the array.
My questions are: 1) is this possible? 2) do I need to create a full logical volume, or can I just make it a volume group and use it? 3) what to do with extents? leave the default, or make an extent equal to the entire combined disk size?
Also, this is pretty much a WORM type situation for archival, so optimal performance isn't really important (but would be nice).
And, since I know I'm going to get an "only if you want to lose your data" reply, the data is backed up offsite nightly.