Hello fellow CentOS'ers-
I've got a system running CentOS 5.0. The motherboard has two onboard SATA ports with two drives attached. I installed the system on a RAID1 setup. However, I'd like to add a hotspare disk to the array. Since there are no additional SATA ports, I've installed an additional controller. After partitioning, the additional drive was easily and successfully added to the existing array as a spare. However, the problem is when the system boots. The hotspare disk is never detected and added to the array. I believe it could be due to the driver for the addon card not being in the initrd?
If I run 'fdisk -l', I see this:
---BEGIN---
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 fd Linux raid autodetect
/dev/sda2 14 523 4096575 fd Linux raid autodetect
/dev/sda3 524 60801 484183035 fd Linux raid autodetect
Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 13 104391 fd Linux raid autodetect
/dev/sdb2 14 523 4096575 fd Linux raid autodetect
/dev/sdb3 524 60801 484183035 fd Linux raid autodetect
Disk /dev/md2: 495.8 GB, 495803301888 bytes
2 heads, 4 sectors/track, 121045728 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk /dev/md2 doesn't contain a valid partition table
Disk /dev/md1: 12.5 GB, 12584288256 bytes
2 heads, 4 sectors/track, 3072336 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk /dev/md1 doesn't contain a valid partition table
Disk /dev/md0: 106 MB, 106823680 bytes
2 heads, 4 sectors/track, 26080 cylinders
Units = cylinders of 8 * 512 = 4096 bytes
Disk /dev/md0 doesn't contain a valid partition table
Disk /dev/sdc: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Device Boot Start End Blocks Id System
/dev/sdc1 * 1 13 104391 fd Linux raid autodetect
/dev/sdc2 14 523 4096575 fd Linux raid autodetect
/dev/sdc3 524 60801 484183035 fd Linux raid autodetect
---END---
If my assumptions are correct, the onboard drives are detected first, then the arrays assembled, and after the system has passed control from the initrd to boot, THEN the addon controller is detected and hence the third drive (sdc). If I am correct, then I need to update my initrd for the system to see and use that third drive during the boot process. Can anyone lend a few tips or pointers on how to proceed? I essentially need the sata_sil driver to be included in the initrd.
All tips welcome. Thank you!
Tim Nelson
Systems/Network Support
Rockbochs Inc.
(218)727-4332 x105
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