[CentOS] recover lvm from pv

On 03/08/2013 09:21 AM, Harold Pritchett wrote:
> On 3/8/2013 8:57 AM, Robert Moskowitz wrote:
>> On 03/08/2013 08:07 AM, SilverTip257 wrote:
>>> On Thu, Mar 7, 2013 at 10:54 PM, Harold Pritchett <harold at uga.edu> wrote:
>>>
>>>> On 3/7/2013 10:10 PM, Stephen Harris wrote:
>>>>> On Thu, Mar 07, 2013 at 09:54:59PM -0500, Harold Pritchett wrote:
>>>>>> What other information do I need which may be available?
>>>>> What does 'vgscan' say?  'vgchange -a y' ?
>>>>>
>>>> [root at mickey www]# vgscan
>>>>       Reading all physical volumes.  This may take a while...
>>>>       Found volume group "VolGroup00" using metadata type lvm2
>>>>
>>> Do both Volume Groups on those two sets of disks have the same name?
>>>     VolGroup00
>> This is all to common an issue.  I make a point that all LVMs are
>> uniquely named.
>>
> Actually, no.  The VolGroup00 name is associated with the running system.  It's the default name when you install CentOS with the default option.  The vol group on the other disks
> is "vg0" and is the name I used when I created the system several years ago.

I would have expected that to show as a result of the vgscan and 
vgchange commands.  Does RAID change things wrt LVM appareance to the 
system?