Hi all,
I'm trying to wrap my mind around how to figure out which of several (in a
raid set) disks is which physical disk.
How is this done these days?
My constraints;
-My filesystem is on /dev/mdX, so I cannot easily assign a label to a single
disk without playing with micro-partitions on the disks
-My BIOS/kernel/controllers play reordering games on me. I'm pretty sure the
disks have moved around, and my boot-disks that started out as /dev/sda and
/dev/sdb (ports 0 and 1 on my NForce4 SATA-controller) are now sdc and sdd.
I think both kernel-updates and BIOS-updates may have changed the order, but
I'm not sure about either.
-My disks do not display activity thru leds, nor are they noisy enough that
a dd from any one of them will be discernible over the rest of them.
-I did not note down which serial-numbers are attached to which disk, altho
I know hdparm -I reports them. I was not able to coax serial-numbers from
udevinfo.
I'm running an RHEL4-based system (2.6.9 with a truckload of vendor
patches), but I'm wondering if there are any neat udev-hacks or similar that
make matching /dev/sdX -devics with the drives possible.
Thank you for all replies.
Yours,
-S
--
Simen Thoresen, Dolphin ICS
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