[linux-lvm] LVM mirroring or mdadm

[malahal at us.ibm.com]

Diego Jacobi [jacobidiego at gmail.com] wrote:
> Hi.
> 
> 
> For te mirrorlog you can partition your new disk with 2 lvm
> partitions. One for logs.
> A mirror log are normally 4 Mb for each mirror, at least in my current system.
> I maked a 1Gb partition only for logs and it is way too much, but 1 Gb
> in current disks is nothing.

You don't need to partition the disk and create a new PV just for the
LVM mirror log. You can use "--alloc anywhere" while creating the mirror
volume and LVM will gladly allocate mirror log on one of your mirror
legs.

--Malahal.