[linux-lvm] Why does every lvm command insist on touching every pv?

[Phillip Susi]

On 06/15/2010 04:41 PM, Takahiro Yasui wrote:
> As for accessing block devices, you can limit accesses to those
> devices by filter option in lvm.conf. This is an example which
> allows accesses only to /dev/sd*
> 
>      filter = [ "a|/dev/sd|", "r|.*|" ]
> 
> You can specify more strict rule like
> 
>      filter = [ "a|/dev/sd[a-z]|", "r|.*|" ]

What if I don't want ANY devices to be scanned every time an lvm command
is run?  Shouldn't they be scanned once when udev first detects they
have been attached, and no more?  I thought removing /dev from the scan=
line would do that, but it didn't.