[linux-lvm] Mail etiquette ( was: Fedora 15 lvm root device not found )

[Phillip Susi <psusi cfl rr com>]

You appear to have sent this message as a reply to my message in the 
thread with the subject "Help to mount ext3 boot partiton which reports 
it's LVM2_member when I try to mount it".  As a result, it shows up as a 
reply in that thread, when you really meant to start a new thread.  This 
causes needless confusion and is poor etiquette.

In the future, when you mean to compose a new message, please do not 
reply to an existing one and delete all of the quotations and change the 
subject line.

On 6/29/2011 4:47 AM, Stamper, Brian P. (ARC-D)[Stinger Ghaffarian
Technologies Inc. (SGT Inc.)] wrote:
> I just upgraded a Fedora system from 13 to 15, and now I can't get it
> to boot.  I'm getting dumped to a dracut shell and getting the error
> dm-linear device lookup failed.  In the dracut output with debug on,
> I see dracut scan my drives, and I see it find my 3 LVs, but it then
> tries to do something with them, I get the error, and it then fails
> out with root device not found and drops me into dracut.
>
> Here's the odd thing, booting off the rescue dvd my volumes are fine.
> The LVM can be mounted no problem.
>
> This makes me think that there's something missing from the kernel or
> initrd.  I can't really figure out what though.  I've gone through
> the output of lsmod when running from the rescue dvd.  I've even
> build a few ramdisks including all the modules that I thought might
> be related (dm, lvm, mdraid, dmraid, multipath).  I tried building
> them with mkinitrd -with=module, and I tried again with dracut
> -add=modules.  No change in results.
>
> I'm not sure where to go from here.  I feel like the system can be
> rescued, but I don't know how to work backward through dracut to find
> out why it's unable to find my root volume.  Any help would be
> appreciated.  Cross-posting to dm-devel.
>
> Thanks, -Brian