changing software raid configuration
I have been experiencing some disk performance issues with one of the linux servers I've inherited. Having done some simple analysis, I believe this to be because the disks are incorrectly recognised as ide instead of sata. I.E., they are /dev/hd* and not /dev/sd*.
using hdparm i get the following timings..
Timing cached reads: 5212 MB in 2.00 seconds = 2607.91 MB/sec
Timing buffered disk reads: 12 MB in 3.49 seconds = 3.44 MB/sec
Timing cached reads: 5192 MB in 2.00 seconds = 2596.55 MB/sec
Timing buffered disk reads: 12 MB in 3.36 seconds = 3.57 MB/sec
im fairly sure i can improve this by instructing fedora to use a different drivers which would then have my disks detected as sda and sdc respectively.
my problem here is that the disks in question are part of a software raid configuration...
Personalities : [raid1] [raid6] [raid5] [raid4]
md0 : active raid1 hdc2 hda2
4192896 blocks [2/2] [UU]
md1 : active raid1 hdc1 hda1
239994880 blocks [2/2] [UU]
If i were to change the drivers, how do i reconfigure the raid to use sd* instead of hd*?