Re: new install
lsorense@csclub.uwaterloo.ca (Lennart Sorensen) writes:
> On Wed, Apr 19, 2006 at 10:51:26PM -0400, Anthony DeRobertis wrote:
>> That really shouldn't matter. The RAID superblocks for all RAID levels
>> contain a UUID for a reason.
>>
>> With
>> DEVICE partitions
>> in /etc/mdadm/mdadm.conf, mdadm will check /proc/partitions for all
>> partitions and scan each for your raid disks.
>>
>> [Not sure how to make mkinitramfs do this, though.]
>
> The problem I get is that on some boots I get:
>
> piix: sdc, sdd
> /dev/md0 = /dev/sda1+/dev/sdb1 (boot)
> /dev/md1 = /dev/sda2+/dev/sdb2 (root)
> /dev/md2 = /dev/sda3+/dev/sdb3 (lvm first PV)
>
> promise: sda, sdb
> /dev/md3 = /dev/sdc1+/dev/sdd1 (lvm second PV)
>
> and on others I get:
>
> promise: sda, sdb
> /dev/md0 = /dev/sda1+/dev/sdb1 (lvm second PV)
>
> piix: sdc, sdd
> /dev/md1 = /dev/sdc1+/dev/sdd1 (boot)
> /dev/md2 = /dev/sdc2+/dev/sdd2 (root)
> /dev/md3 = /dev/sdc3+/dev/sdd3 (lvm first PV)
>
> So now, do I pass root=/dev/md1 or root=/dev/md2? Seems 50% of the time
> it is one, and 50% of the time the other. Bloody pain really.
>
> I tried passing root=LABEL=ROOT but for some reason, at least with
> 2.6.15, /dev/disk/.... needed to access by label doesn't exist so at
> least with the way initramfs-tools makes the initrd, it can't find root
> that way.
>
> So my raid componets always start up just fine, the problem is knowing
> which raid md device is the right one to mount as root.
>
> Len Sorensen
Check your initramfs. I guess that one screws it up, probably together
with udev.
MfG
Goswin
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