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

[Zdenek Kabelac <zkabelac redhat com>]

Dne 16.6.2010 02:34, Phillip Susi napsal(a):
> 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.

I'd have say - this is work-in-progress for now - yes, udev should handle all 
this for lvm - but we are not yet there...

Meanwhile - you may write few scripts which will pass exact filters for your 
lvm commands if you know you do not need to touch those devices.

Zdenek