Works fine on my test system (Pentium D, fully updated 64-bit SL 4.1):

[root@pr380 ~]# dd if=/dev/zero of=/tmp/pv bs=1M count=0 seek=1024
0+0 records in
0+0 records out
[root@pr380 ~]# losetup /dev/loop0 /tmp/pv
[root@pr380 ~]# pvcreate -v /dev/loop0
     Set up physical volume for "/dev/loop0" with 2096768 available sectors
     Zeroing start of device /dev/loop0
   Physical volume "/dev/loop0" successfully created

Any "avc: denied" messages in your logs?

On Wed, 5 Oct 2005, Stefano Stalio wrote:

> on SL 4.1, both i386 and x86_64, both on xeon and amd machines, I get the 
> following
> error when trying to create am LVM phyisical volume.
>
> I get the same output on any pv and vg command.
>
> [root@myhosy ~]# pvcreate /dev/sdb1
> connect() failed on local socket: Connection refused
> Locking type 2 initialisation failed.


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