[DRBD-user] Configuring a DRBD resource as a Physical Volume

Chuck Smith cgasmith at comcast.net
Tue Dec 29 10:24:47 CET 2015

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

  Though not a normal contributor along these lines, just dropping that 
you need to vgchange -an VG1 and when on secondary promoted finally 
vgchange -ay VG1. you can find open files using lsof and my common 
mistake is to be in a shell with in the lv hosted by the vg .
see man vgchange and man lsof for syntax-
cheers and happy new year

On 12/28/2015 10:27 PM, Marc Ballat wrote:
> Hi,
> 0. I have two hosts running debian jessie from /dev/sdb.
> 1. I followed the user guide and created a drbd resource directly on a
> partition (/dev/sda1).
> 2. On top of my resource (/dev/drbd2), I created a LVM volume group
> (VG1) and a logical volume (data2).  I created an ext4 filesystem on
> data2.
> Step 1 was done on two hosts (proxmox2, primary and proxmox3, secondary).
> Step 2 was replicated by drbd from proxmox2 to proxmox3 with the
> exception that the entries under /dev were not (/dev/VG1 and
> /dev/mapper/VG1-data2).
> While fiddling and trying to find a way to create the entries under
> /dev on proxmox3, I tried to demote proxmox2:data2 from primary to
> secondary but it complains that
> root at proxmox2:# drbdadm secondary data2
> data2: State change failed: (-12) Device is held open by someone
> Command 'drbdsetup secondary data2' terminated with exit code 11
> The user-guide covers the early steps but ignores the complications.
> I am new to drbd but I'd be willing to contribute to a more complete
> user guide if I manage to finish my configuration ;-)
> Cheers.
> Marc
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