[BlueOnyx:12043] Re: Dracut can't mount LVM volumes

[Chuck Tetlow]

---------- Original Message -----------
From: Gerald Waugh <gwaugh at frontstreetnetworks.com> 
To: BlueOnyx General Mailing List <blueonyx at mail.blueonyx.it> 
Sent: Fri, 18 Jan 2013 09:32:38 -0600 
Subject: [BlueOnyx:12041] Re: Dracut can't mount LVM volumes

> On 01/17/2013 11:54 PM, Chuck Tetlow wrote:Hi Blueonyx experts,
> 
> Can anyone help me with a LVM problem?  One of the servers Imanage for a company was doing some weird things this afternoon. While I don't like to reboot our servers for problems that are notsystem-related, I'd run out of ideas.  So I commanded a reboot. BIG MISTAKE!  Now it won't come up.
> 
> The boot fails with: kernel panic - not syncing:  Attempted tokill init
> 
> Working on it a bit - I've got the output coming to the screen. And I get:
> 
> dracut: Scanning devices sda2 for LVM logical volumesVolGroup00/root VolGroup00/swap
> dracut: Volume group VolGroup00 is exported
> dracut: Volume group VolGroup00 is exported
> dracut Warning: nNo root device"block:/dev/mapper/VolGroup00-root" found
> dracut Warning: LVM VolGroup00/root not found
> dracut Warning: LVM VolGroup00/swap not found
> dracut:
> 
> So apparently - dracut isn't able to find or mount the LVMpartitions.  And I'm stuck.  Nothing I've found on the net ishelping.  The suggestions I've found all require you to mount theLVM partitions under a rescue boot or a Knoppix boot - to find/fixthe problem.  But its not working.
> 
> Has anyone got some experience with LVM and can providesuggestions?  I really need to get this server back up soon.
> 
> 
> If RAID 1 system try booting off of the mirrored drive.
> 
> -- 
> Gerald

Thanks Gerald.  But its single drive.  In fact, its virtualized and pretending its on just one drive.

Unfortunately,this is the only BlueOnyx server with LVM.  And that's the problem - LVM.  Its like dracut can't find the block device to mount the logical partitions /dev/mapper/VolGroup00-root and /dev/mapper/VolGroup00-swap.

Andwhen I try to mount manually (to fix LVM, or at least recover data) - the lvdisplay gives nothing at all.  I've seen what its supposed to report back, and its not giving that data.  So I can't get the logical volumes to mount manually either.

Its beginning to look like I'm hosed....

Chuck 
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