Mirroring existing LVM set: software RAID or LVM mirror?
I'm going to buy a second disk to add to my system. I want to mirror my
current LVM setup for redundancy. So far, on older systems, I've always
used software RAID 1 or 5 arrays with LVM on top. I've never had any
problems with it, mainly because I've been lucky and have never had disk
failures.
Currently, I have no software RAID on my system yet. Just a small /boot
partition, and a huge LVM partition for everything else. I recently
discovered I could use LVM's mirroring capabilities. This would probably be
easiest and fastest for me, since I wouldn't have to try shove a software
RAID array beneath my existing PV's. On the other hand, software RAID with
LVM on top seems to be the tried and trusted Linux way. I haven't even
found a comparison between the two yet.
Please share your LVM mirroring experiences.
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