[CentOS] RAID problem when building new computer

Thu Jul 23 02:13:38 UTC 2009
Rob Kampen <rkampen at kampensonline.com>

fred smith wrote:
> Hi all!
> I'm building up a new box and plan to use Centos 5 on it.
> i've got a pair of SATA 320 GB drives to make a RAID1.
> I'm trying to follow the "howto" on the centos wiki for making a
> "partitionable RAID" installation.
> Given that my partition scheme has a separate /boot partition, while
> the one in the HOWTO apparently does not, I've had to tweak the steps
> just slightly. But they all succeed without any problems, including
> watching mdadm create the mirrored pair.
> however, when I pop out the DVD (booted in rescue mode, per the HOWTO)
> and reboot, it gets past the GRUB screen and gives me these errors:
> 	Mount: could not find filesystem '/dev/root'
> 	setuproot: moving /dev failed: no such file or directory
> 	setuproot: error mounting /proc: No such file or directory
> 	setuproot: error mounting /sys: No such file or directory
> 	switchroot: mount failed: No such file or directory
> 	Kernel panic - not syncing: Attempted to kill init!
> I have no idea what these errors mean. I assume they all cascade from
> whatever failure the first one is trying to inform me of. I don't see
> "/dev/root" anywhere in any of the config files I changed, per the
> I'd appreciate clues, hints, suggestions, etc.
> Thanks in advance!
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Looks like it is not finding /
The boot partition and grub appear okay, thus you may want to look at 
the /boot/grub/grub.conf file and check
the kernel statement with root=/dev/md3
this is where my root is.
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