[linux-lvm] what creates the symlinks in /dev/<volgroup> ?

[Chris Friesen]

Hi,

Can someone tell me what creates the /dev/<volgroup>/<volume symlinks?  Is this 
LVM or udev (and if udev, do you know which rule)?

I'm seeing some interesting behaviour where if I create a thin pool it creates a 
symlink for the pool, but once I create a thin volume within the pool then the 
pool symlink disappears.

Thanks,
Chris