I'm running Ubuntu 14.04 on a system with three hard disks in a RAID 0 configuration. The setup of the RAID was essentially this:
mdadm --create --verbose /dev/md0 --level=0 --raid-devices=3 /dev/sdb1 /dev/sdc1 /dev/sdd1 mdadm --detail --scan >> /etc/mdadm/mdadm.conf update-initramfs -u
Then I created a partition on /dev/md0 and added it to /etc/fstab using its UUID that I got from
blkid. Everything seems to work, also after rebooting.
However, I've read somewhere that using the UUID of a RAID partition in /etc/fstab is potentially dangerous because the RAID driver might not be available at the point when fstab is processed or something like that, so that this UUID would not mean anything.
I'm not a linux expert unfortunately. My question is therefore whether using the UUID of a RAID partition in /etc/fstab is safe or whether it could potentially cause problems? If the latter is the case, what would be the best alternative?