Re: Replacing disks on RAID1 boot, grub can't find /dev/md0

Chris Burgess <[email protected]> Sat, 12 Jul 2014 12:05:13 +1200

Newsgroups	gmane.org.user-groups.linux.dunedin.general
Message-ID	<[email protected]>

AFAICT (I bought the server at end of lease, so it was set up by the then hosting environment) it was indeed booting off /dev/md0, which seems like a purpose-built RAID1 boot partition. Makes sense you’d want your boot partition to have some redundancy, not just the data.

Looks a lot like this case - http://forums.debian.net/viewtopic.php?f=5&t=105964 … Will see how I go with the information there.

Thanks

On 12/07/2014, at 11:57 am, Paul Campbell <[email protected]> wrote:

> On Sat, 12 Jul 2014 11:47:34 Chris Burgess wrote:
>> Rebooted, and it drops to Busybox and says /dev/md0 is not found.
> 
> correct me if I'm wrong but isn't/dev/md0 a kernel sort of concept that 
> doesn't really exist until after the kernel has booted (ie not while grub is 
> running)
> 
> On my raided home server I think I made a partition for /boot that's not part 
> of the raid on one of the disks and manually mirror it on another (I'm sure 
> there's a better way)
> 
> 	Paul
> 
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