MDRaid 1 Recovery
Law Barstow
LBarstow at cfl.rr.com
Sat May 2 23:17:32 UTC 2009
Hello List,
I'm having some issues with my mdraid. The system is Fedora 10, x86_64.
I installed the system with two Seagate drives in a RAID 1
configuration. I let the configuration utility automatically setup the
RAID configuration. I believe each drive is configured a single
partition with this partition being part of the RAID device.
About a week ago, device 0 reported errors and was dropped from the
array by mdraid. The RAID continued in a degraded state with no
problems. I finally had time to work on it so I shut down the PC and
tried to run some disk drive utilities on it. The BIOS isn't even
seeing the drive, so I'll RMA it to Seagate. Drive 0 is unplugged and
not in the system, leaving Drive 1. When I try to boot, I get just a
message of "GRUB". I'm assuming that my problem is that GRUB was
installed to drive 0 and drive 0 was set to be my primary.
I've tried booting to the FC10 Install media in recovery mode, but when
it attempts to mount the device, I receive a message that the device
must be initialized, which will cause a loss of all data.
How do I resolve the problem booting to drive 1? Second, once I install
my replacement device, how do I rebuild the array? I assume I'll need
to some how get my current Drive 1 set to primary and then install the
second drive, and use mdadm to add it.
Thank you for your help
Law
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