Running fsck on root file system

[Kenneth Holter]

Hi all.


I need to run fsck.ext3 on a root partition that live in a logical volume
(lvm).

I know how to boot the installation CD into rescue mode, and run for example
"fsck.ext3 /dev/sda2" to check a partition. But when /dev/sda2 is a logical
volume I guess I first need to activate the volume before I can check it for
errors. Does anyone have a link to a walkthrough on how to do this?

Regards,
Kenneth Holter