>>>>> In <[email protected]> 
>>>>>   Lars Ellenberg <[email protected]> wrote:
> On Tue, Jun 30, 2015 at 10:16:42AM +0200, Lars Ellenberg wrote:
> > On Tue, Jun 30, 2015 at 09:46:49AM +0900, Hiroshi Fujishima wrote:
> > > Hello
> > > 
> > > In combination of drbd-utils-8.9.3 and drbd-8.4.6, the following
> > > command failed to start drbd resource.
> > > 
> > > # systemctl stop pacemaker
> > > # rmmod drbd
> > > # systemctl start pacemaker
> > > 
> > > # crm_mon
> > > Failed actions:
> > >     res_drbd_r0_start_0 on sac-tkh-sv002 'unknown error' (1): call=7, 
> > > status=complete, last-rc-change='Tue Jun 30 09:33:29 2015', queued=0ms, 
> > > exec=67ms
> > > 
> > > Jun 30 09:33:29 sac-tkh-sv002 drbd(res_drbd_r0)[26761]: ERROR: r0: Called 
> > > drbdadm -c /etc/drbd.conf syncer r0
> > > Jun 30 09:33:29 sac-tkh-sv002 drbd(res_drbd_r0)[26761]: ERROR: r0: Exit 
> > > code 1
> > > Jun 30 09:33:29 sac-tkh-sv002 drbd(res_drbd_r0)[26761]: ERROR: r0: 
> > > Command output:
> > > Jun 30 09:33:29 sac-tkh-sv002 pacemaker_remoted[26723]: notice: 
> > > operation_finished: res_drbd_r0_start_0:26761:stderr [ drbdadm: Unknown 
> > > command 'syncer' ]
> > > Jun 30 09:33:29 sac-tkh-sv002 pacemaker_remoted[26723]: info: 
> > > log_finished: finished - rsc:res_drbd_r0 action:start call_id:7 pid:26761 
> > > exit-code:1 exec-time:67ms queue-time:0ms
> > > Jun 30 09:33:29 sac-tkh-sv002 crmd[26726]: notice: process_lrm_event: 
> > > Operation res_drbd_r0_start_0: unknown error (node=sac-tkh-sv002, call=7, 
> > > rc=1, cib-update=12, confirmed=true)
> > > Jun 30 09:33:29 sac-tkh-sv002 crmd[26726]: notice: process_lrm_event: 
> > > sac-tkh-sv002-res_drbd_r0_start_0:7 [ drbdadm: Unknown command 'syncer'\n 
> > > ]
> > 
> > You happen to have more than one DRBD module available?
> 
> In any case,
> modprobe DRBD before starting pacemaker should help.

I mean that after OS is booted, drbd.ko is not loaded.  After
rebooting OS, `systemctl start pacemaker' fail to start drbd
resource.

`systemctl enable drbd.service' loads drbd.ko, But the following
document describes that you should disable the DRBD init script.

https://drbd.linbit.com/users-guide/s-pacemaker-crm-drbd-backed-service.html

drbd-utils-8.9.2 w/ drbd-8.4.6 does not have such a problem.
I think it is drbd-utils-8.9.3's problem.

-- 
Hiroshi Fujishima
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