> I'll create a new lvm logical volume, create a file system, and restore from a >level 0 dump taken from a lvm snapshot just before things broke. Ok. > The part I'm not certain about is the grub voodoo to get the system to boot to > the lvm with the restored root file system. Look at ./etc/lvm/backup/* in your dumped files, it will show you the VG, LV and ID. Create your new VG and LV, then edit fstab to reflect or recreate it w/ the same names. Just make sure fstab reflects whats actually in place. > Are there differences in the boot process for CentOS/RHEL 5.x versions that I have > to worry about. Would it be better to try to get a closer match between the root > file system and the live cd vintages. No, you're simply booting to env that allows you to create a new FS, this might matter if the recovery env created an FS that was some revision ahead of what your dumped OS uses, but given the info you provided, I think you are fine, give'er and let us know... jlc