Currently I'm using LVM just to merge a few disks of different size. I want to know if it is possible to use
mdadm with stripes instead of LVM?
Will it give me additional performance? Will it use all the space across disks of different size?
However, there is no big difference in raid0 and lvm stripe; seems lvm is better choice.
raid0 with mdadm supports drives with different size and its size equals to sum capacity of drives.
Unfortunately raid0 mdadm can't add new drives without rebuilding the whole raid, however lvm does.