Anyone know the LVM UUID Format?

[Roger Heflin]

Timothy Selivanow wrote:
> Does anybody off hand know the format that is used by LVM, as it isn't
> standard UUID obviously.  Is it just 6-4-4-4-4-4-6 of [a-zA-Z0-9]?  Or
> is it derived from a valid 8-4-4-4-12 [a-f0-9]?  Does it have any
> metadata embedded in it, e.g. creation time, host, etc., similar to some
> of the UUID generation methods?
> 
> I want to be able to generate random UUIDs for use in LVM, but
> genuuid(1) can't output in the LVM format so I'll need to make a script
> if a tool doesn't currently exist to do this.  I've tried to search for
> this on google, but "LVM UUID format" or generator or script or standard
> doesn't come up with anything useful.

I would bet if you get the source code for lvcreate or vgcreate it has the exact 
code it is using to generate it.

                                 Roger