How to create initrd.img to boot LVM-on-RAID0?

Ed Greshko Ed.Greshko at greshko.com
Wed Oct 3 02:07:11 UTC 2007


Dean S. Messing wrote:
> I'm having the devil of a time trying to boot off
> an  "LVM-on-RAID0" device.
> 
> I've created a software RAID-0, defined a Volume Group on in with
> (currently) a single logical volume, and copied my entire
> installation onto it, modifying the copied fstab to reflect where
> the new "/" is.
> 
> I created a new initrd with:
> 
> mkinitrd --preload raid0  --with=raid0 initrd_raid.img 2.6.22.5-76-fc7
> 
> Note: the LVM modules are getting included in the initrd "for free"
> because I'm currently running on a non-raid LV-managed file system.
> 
> I added a stanza to grub.conf for the new initrd.img.
> 
> But the thing won't boot. From the boot messages it appears to not
> be starting the array, so when it goes to scan for LVs it doesn't
> find the one that's sitting on top of the array where root lives.
> 
> Are there instructions for how to make this work?  I've googled for
> a couple of hours, tried a bunch of stuff, but can't get it to
> work.  From what I've read I suspect I must hand-tweek the "init"
> file in the initrd.
> 
> Surely there is "a right way" to do this.

Are you saying that your /boot partition is on LVM?  I'm not certain if
things have changed in F7 but previously that was not possible.

-- 
Imagine what we can imagine!
		-- Arthur Rubinstein




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