[DRBD-user] Unable to init a node

[Roland Kammerer]

On Mon, Mar 19, 2018 at 07:12:29PM +0100, Jdt wrote:
> 
> 
> Le 13/03/2018 à 17:05, Roland Kammerer a écrit :
> > On Tue, Mar 13, 2018 at 04:57:34PM +0100, Jdt wrote:
> >> Le 13/03/2018 à 16:21, Roland Kammerer a écrit :
> >>
> >>> On Tue, Mar 13, 2018 at 04:07:17PM +0100, Jdt wrote:
> >>>> Hi,
> >>>>
> >>>> We had a three nodes Proxmox cluster in V4 (jessie) with drbd from Proxmox.
> >>>> I choose to reinitialize this cluster with Proxmox V5 (stretch) with
> >>>> drbd from Linbit.
> >>>>
> >>>> I install Proxmox from the ISO image on the three nodes. Proxmox nodes
> >>>> are not associated yet in a cluster.
> >>>> I install drbdmanage-proxmox as indicated in
> >>>> https://docs.linbit.com/docs/users-guide-9.0/#ch-proxmox
> >>>> My network interfaces are well configured for drbd.
> >>>> On the first node I create the drbdpool volume group as indicated in
> >>>> https://docs.linbit.com/docs/users-guide-9.0/#s-dm-init-cluster
> >>>>
> >>>> But it's failed in initialization :
> >>>> root at dmz-pve1:~ # drbdmanage init 192.168.2.10
> >>>>
> >>>> You are going to initialize a new drbdmanage cluster.
> >>>> CAUTION! Note that:
> >>>>   * Any previous drbdmanage cluster information may be removed
> >>>>   * Any remaining resources managed by a previous drbdmanage installation
> >>>>     that still exist on this system will no longer be managed by drbdmanage
> >>>>
> >>>> Confirm:
> >>>>
> >>>>   yes/no: yes
> >>>> Error: External command failed:
> >>>> drbdsetup new-resource .drbdctrl 0
> >>>> Command output:
> >>>>   (stdout)
> >>>> Command exited with exit_code 20
> >>>>
> >>>> Initialization failed
> >>> Failing at that early stage usually means that the wrong module is
> >>> loaded. cat /proc/drbd
> >> root at dmz-pve1:~ # cat /proc/drbd
> >> version: 8.4.7 (api:1/proto:86-101)
> >> srcversion: 2DCC561E7F1E3D63526E90D
> > Then I was right. drbdmanage always was drbd9 only. There should be a
> > drbd-dkms module in our proxmox repo. Install that one and make sure it
> > is loaded.
> >
> Thanks. I add pve-headers and drbd-dkms and I can initialize the new
> drbdmanage cluster.
> It will be nice to include this in
> https://docs.linbit.com/docs/users-guide-9.0/#ch-proxmox chapter.
> But, I got a lot of messages on my syslog about PVE storage  about every
> ten seconds :
> > Mar 19 18:54:02 dmz-pve1 pvestatd[1984]: Use of uninitialized value in
> > split at /usr/share/perl5/PVE/Storage/Custom/DRBDPlugin.pm line 217.
> > Mar 19 18:54:02 dmz-pve1 pvestatd[1984]: Use of uninitialized value
> > $free_space in multiplication (*) at
> > /usr/share/perl5/PVE/Storage/Custom/DRBDPlugin.pm line 220.
> > Mar 19 18:54:02 dmz-pve1 pvestatd[1984]: Use of uninitialized value
> > $total_space in multiplication (*) at
> > /usr/share/perl5/PVE/Storage/Custom/DRBDPlugin.pm line 221.
> > Mar 19 18:54:12 dmz-pve1 pvestatd[1984]: Use of uninitialized value in
> > split at /usr/share/perl5/PVE/Storage/Custom/DRBDPlugin.pm line 217.
> > Mar 19 18:54:12 dmz-pve1 pvestatd[1984]: Use of uninitialized value
> > $free_space in multiplication (*) at
> > /usr/share/perl5/PVE/Storage/Custom/DRBDPlugin.pm line 220.
> > Mar 19 18:54:12 dmz-pve1 pvestatd[1984]: Use of uninitialized value
> > $total_space in multiplication (*) at
> > /usr/share/perl5/PVE/Storage/Custom/DRBDPlugin.pm line 221.
> > Mar 19 18:54:22 dmz-pve1 pvestatd[1984]: Use of uninitialized value in
> > split at /usr/share/perl5/PVE/Storage/Custom/DRBDPlugin.pm line 217.
> > Mar 19 18:54:22 dmz-pve1 pvestatd[1984]: Use of uninitialized value
> > $free_space in multiplication (*) at
> > /usr/share/perl5/PVE/Storage/Custom/DRBDPlugin.pm line 220.
> > Mar 19 18:54:22 dmz-pve1 pvestatd[1984]: Use of uninitialized value
> > $total_space in multiplication (*) at
> > /usr/share/perl5/PVE/Storage/Custom/DRBDPlugin.pm line 221.
> In proxmox interface I have no idea of free space on my drbdpool VG.
> Initialize the cluster create /dev/drbdpool/.drbdctrl_0 and
> /dev/drbdpool/.drbdctrl_1.
> For the moment no cluster are created for drbd and for proxmox.

Please do not start debugging in the GUI, start at the lowest level.

- You did add other nodes besides the initial node, didn't you?
- The control volume is happy and connected to the other nodes?
- Drbdmanage is started on the other nodes?
- "drbdmanage role" on all nodes shows something meaningful?
- You can create resources on the command line and assign them?

Regards, rck