The task is to create LVM storage for virtual machine images. So LVM will be used in any case.
There are two ways LVM providing redundancy:
lvcreate -m 1 --mirrorlog mirrored -n logical_volume -L 50G vg0
internal RAID mechanism
lvcreate --type=raid1 -n logical_volume -L 50G vg0
Second way should provide reading performance boost.
As alternative we can create raid1 with mdadm and use Linux Soft Raid device as physical volume for LVM.
Which way is better and why?