Arch Linux

TypoTech

Member

From: Detroit, MI

Registered: 2010-04-13

Posts: 1

[Solved] SW Raid + LVM, Unbootable after recent update

Last night I upgraded Arch using pacman -Scc, pacman -Syu. I also updated my aur packages using yaourt. Normally this isn't a big deal, but after rebooting the system, I am unable to boot using the existing kernel.

My setup was done using software raid 5 using 3 disks, with LVM on top of it. Currently when attempting to boot, if gives the following messages:

:: Running Hook [raid]
md: Will configure md0 (super-block) from /dev/sda1,/dev/sdb1,/dev/sdc1, below.
md: Will configure md2 (super-block) from /dev/sda3,/dev/sdb3,/dev/sdc3, below.
modprobe: FATAL: Could not load /lib/modules/2.6.33-ARCH/modules.dep: No such file or directory
modprobe: FATAL: Could not load /lib/modules/2.6.33-ARCH/modules.dep: No such file or directory
md: Unknown device name: /dev/sda1
md: Unknown device name: /dev/sda3
:: Running Hook [lvm2]
Waiting 10 seconds for device /dev/mapper/raiden-rooted ...

Root device '/dev/mapper/raiden-rooted' doesn't exist, attempting to create it
ERROR: Failed to parse block device ids for '/dev/mapper/raiden-rooted'
ERROR: Unable to detect or create root device '/dev/mapper/raiden-rooted'
You are being dropped to a recovery shell
...

My grub config:

root    (hd0,0)
kernel /vmlinuz26 root=/dev/mapper/raiden-rooted ro md=0,/dev/sda1,/dev/sdb1,/dev/sdc1 md=2,/dev/sda3,/dev/sdb3,/dev/sdb3
initrd /kernel26.img

The failback kernel produces the same errors. I'm currently downloading the most recent ISO so I can attempt to recover the system. I've not had many issues with pacman, but this one is pretty severe. I believe the system was originally 2009.02, and I've done plenty of updates before without any issues. Thought I would ask the community for tips or tricks, or see if anyone else has recently had this issue.

Update:
Turns out that the raid hook was removed at some point. I must have completely missed this during the update. Once I booted the live-cd, chrooted and changed the hook from 'raid' to 'mdadm', everything was off and running.

Thanks in advance for any help or comments.

Last edited by TypoTech (2010-04-13 05:02:47)