I think I've figured it out.  It may be completely wrong, but the way I was 
causing the PXE boot was to zero the boot sector of the node before the reboot. 
 I increased that to 10Mb to make sure the partition table was zeroed as well, 
and now the process seems to work.  I'm still interested if anyone else has 
encountered something like this and what a better solution might be.

Thanks!
Jeff

From: [email protected] [mailto:[email protected]] On Behalf Of 
Walls, Jeffrey Joel (HP Converged Cloud - Cloud OS)
Sent: Friday, April 19, 2013 3:27 PM
To: [email protected]
Subject: [Crowbar] "Reset Node" - Volume group name already in use

Hi Crowbar'ers,

I apologize in advance if this is a dumb question, but I'm stumped.  I've dug 
through logs, read source, googled and binged and can't seem to find an answer 
that moves me forward.  If you can help, I'd greatly appreciate it.

I have a pool of VM's running in a VMWare vSphere cluster.  Crowbar is running 
fine and PXE booted these nodes and was able to allocate them.  Note that the 
"bios" and "raid" are both set to "not set" on all of these nodes.  I then 
applied some barclamps and that worked fine as well.  I want to return some of 
these nodes to an unallocated state (with all of the "junk" that the barclamps 
put down removed), so I issued the command:

crowbar_machines reinstall <node_id>

And then forced the node to PXE-boot.  We're not using BMC, so I had to force 
the node to PXE-boot, but I presume that's ok?  It PXE-boots fine and then 
enters the loop waiting to be allocated.  When I later allocate the node, it 
fails booting Ubuntu with the message: Partition disks - Volume group name 
already in use.  I've tried "reset", "reinstall", and "delete" and none of them 
give me the behavior I want, which is just to "give me a fresh new system."

So my questions are:

1)      Do I have the process correct for "returning a node to an unallocated 
state"?

2)      Why would the volume group still be set after a PXE boot?

3)      What else can I do to track this down?

4)      What additional information can I provide to help?

Thanks for any help you can give!

Jeffrey Walls
HP Converged Cloud
Cloud OS

[email protected]<mailto:[email protected]>
T +1 970 898 1619
Hewlett-Packard Company
3404 E. Harmony Road, MS-F
Fort Collins, CO 80525
USA

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