This is a more theoretical question I ran into after I found out that it is possible with newer Kernels to create partitions on a RAID-volume.
Since Grub2 it is possible to have /boot on a RAID-volume. My basic setup for small servers always looked like this since then:
- md0 --> ext3/4 --> /swap
- md1 --> ext3/4 --> /boot
- md2 --> ext3/4 --> /
- md3 --> ext3/4 --> /home
Never ran into problems with this. However, it is possible (I don't know since when exactly) to create one RAID-Volume and create multiple partitions on that volume (meaning no LVM but "native" partitions like md0p1 etc.).
So I'm just wondering what's the sense behind this? Are there any performance-related pros to go that way or is this just an organizational "feature"? I seldom experienced Kernel developers to include a feature that doesn't provide an improvement compared to former versions so can anybody explain which environment would profit from such a setup?