I have in mdadm.conf the following:
ARRAY /dev/md/root level=raid1 num-devices=2 UUID=331de03d:8ba39777:3b664baf:36366f33
But here is mdadm.conf example with the following:
ARRAY /dev/md0 UUID=3aaa0122:29827cfa:5331ad66:ca767371
In my current centos I have two raid partitions: /dev/md126, and /dev/md127.
- Why do I have /dev/md/root instead of /dev/mdX?
- As I understand in linux I must have some partition in order to mount it. For example /dev/sda1, /dev/md1. After that I need some mount point, where to mount it, for example, /, /boot etc. And of course we must set the relation between partition and mount point, what we do in fstab file. How is this relation (partition<->mount point) is set with raids in my situation.
P.S. I've read a lot of questions about md12X problem but I didn't find the clear explanation of 1)why it happens 2)how dangerous it is 3)what should be done. That's why before doing something I want to understand the backend of the problem.