[Crash-utility] kdump and lvm ?

[Dave Anderson]

Jan-Frode Myklebust wrote:
> I'm trying to get kdump working on our RHEL5 servers, 
> but am failing to get any dumps. After I trigger a crash, 
> it starts booting the kdump environment, but quickly
> fails with messages about (from memory):
> 
> 	Imported volume group "rootvg" OK.
> 	Failed to find logical volume /dev/mapper/-swaplv
> 	Failed to find logical volume /dev/mapper/-rootlv
> 	Failed to find logical volume /dev/mapper/-varlv
> 	Failed to find logical volume /dev/mapper/-locallv
> 
> and dumps me into the shell.  I checked the /dev/mapper
> directory, and found the expected /dev/mapper/rootvg-swaplv, 
> /dev/mapper/rootvg-rootlv, etc.. So the problem seems to be
> that kdump is eating up the "rootvg"-part of the device name.
> 
> Is this a known problem? Any ideas for how to fix it ?
> 
> Another thing.. anybody know if it's possible the redirect
> the kdump output to netconsole ? That would be very nice
> for capturing the reason when it fails..
> 
> 
>   -jf
> 
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You can expect to get better kexec/kdump-specific help on
either of these two lists:

   http://lists.infradead.org/mailman/listinfo/kexec
   http://post-office.corp.redhat.com/mailman/listinfo/kexec-kdump-list

Although there's a huge member cross-over between this list
and the two above, the primary purpose of this list is the
crash utility itself.

Dave