We have about 50 CentOS servers with software RAID level 1 (mirroring). Each week, we swap out one of the drives (the one in the second of four hot-swap bays, only the first two of which contain drives) on each server and take them offsite for safekeeping.
The problem is, the kernel seemingly randomly switches between /dev/sdb and /dev/sdc for these devices. This makes the process slower by requiring more manual input where a script(s) could otherwise suffice.
It also confuses smartd, which AFAIK, needs the correct device names to report accurately.
Ideally, we'd like to force the OS at some level to always see these devices as /dev/sda and /dev/sdb. If not, is there at least some way to configure smartd to be "smart" and recognize which devices are in use?
TIA,