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

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

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