MDRaid 1 Recovery

[Robert L Cochran]

http://radu.rendec.ines.ro/howto/raid1.html

http://www.linuxjournal.com/article/8874

Recoveries just never seen simple...

Bob


On 05/02/2009 07:17 PM, Law Barstow wrote:
> 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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