lvm filter

root@yoda:~# grep drbd /etc/lvm/lvm.conf
    filter = [ "a|drbd[0-9].*|", "a|md[0-9].*|", "r|.*|" ]
root@yoda:~# vgscan
  Reading all physical volumes.  This may take a while...
  Found volume group "yoda" using metadata type lvm2
root@yoda:~# ls -l /dev/drbd0
brw-rw---- 1 root disk 147, 0 15 jul 12.59 /dev/drbd0
root@yoda:~# pvcreate /dev/drbd0
  Device /dev/drbd0 not found (or ignored by filtering).
root@yoda:~# pvdisplay
  --- Physical volume ---
  PV Name               /dev/md0
  VG Name               yoda
  PV Size               3,64 TiB / not usable 0
  Allocatable           yes
  PE Size               4,00 MiB
  Total PE              953866
  Free PE               682186
  Allocated PE          271680
  PV UUID               SGxNtC-J2sj-x1GF-DqsT-nrjv-QoaW-V2GjVK