[ClusterLabs] SBD with shared block storage (and watchdog?)

[emmanuel segura]

modprobe softdog if you don't have an external watchdog

2017-02-13 18:34 GMT+01:00  <durwin at mgtsciences.com>:
> I am working to get an active/active cluster running.
> I have Windows 10 running 2 Fedora 25 Virtualbox VMs.
> VMs named node1, and node2.
>
> I created a vdi disk and set it to shared.
> I formatted it to gfs2 with this command.
>
> mkfs.gfs2 -t msicluster:msigfs2 -j 2 /dev/sdb1
>
> After installing 'dlm' and insuring guest additions were
> installed, I was able to mount the gfs2 parition.
>
> I then followed.
>
> https://github.com/l-mb/sbd/blob/master/man/sbd.8.pod
>
> I used this command.
>
> sbd -d /dev/sdb1 create
>
> Using sbd to 'list' returns nothing, but 'dump' shows this.
>
> fc25> sbd -d /dev/sdb1 dump
> ==Dumping header on disk /dev/sdb1
> Header version     : 2.1
> UUID               : 6094f0f4-2a07-47db-b4f7-6d478464d56a
> Number of slots    : 255
> Sector size        : 512
> Timeout (watchdog) : 5
> Timeout (allocate) : 2
> Timeout (loop)     : 1
> Timeout (msgwait)  : 10
> ==Header on disk /dev/sdb1 is dumped
>
> I then tried the 'watch' command and journalctl shows error listed.
>
> sbd -d /dev/sdb1 -W -P watch
>
> Feb 13 09:54:09 node1 sbd[6908]:    error: watchdog_init: Cannot open
> watchdog device '/dev/watchdog': No such file or directory (2)
> Feb 13 09:54:09 node1 sbd[6908]:  warning: cleanup_servant_by_pid: Servant
> for pcmk (pid: 6910) has terminated
> Feb 13 09:54:09 node1 sbd[6908]:  warning: cleanup_servant_by_pid: Servant
> for /dev/sdb1 (pid: 6909) has terminated
>
>
> From
>
> http://blog.clusterlabs.org/blog/2015/sbd-fun-and-profit
>
> I installed watchdog.
>
> my /etc/sysconfig/sbd is.
>
> SBD_DELAY_START=no
> SBD_OPTS=
> SBD_PACEMAKER=yes
> SBD_STARTMODE=clean
> SBD_WATCHDOG_DEV=/dev/watchdog
> SBD_WATCHDOG_TIMEOUT=5
>
> the sbd-fun-and-profit says to use this command.
>
> virsh edit vmnode
>
> But there is no vmnode and no instructions on how to create it.
>
> Is anyone able to piece together the missing steps?
>
>
> Thank you.
>
> Durwin F. De La Rue
> Management Sciences, Inc.
> 6022 Constitution Ave. NE
> Albuquerque, NM  87110
> Phone (505) 255-8611
>
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