Hi!
I am try to use two nodes active active drbd (8.4.2) configuration with
pacemaker(1.1.10,1.1.9 ). The drbd is main resource in my cluster, so
there is the first resource in order,and other resources is co-located
on drbd.
The two cluster nodes starts without any problem, and resource is
correctly migrates to a on-line node, when I put another one to standby
mode.
But if I put standby node on-line the drbd ocf resource try to demote
drbd, so it stop co-located resources ( such as virtual domain ) before.
I think, this is not what I want from cluster.
I look in ocf source file and find this code in drbd_start() function
drbd_start() {
....
$OCF_RUNNING_MASTER)
ocf_log warn "$DRBD_RESOURCE already Primary, demoting."
do_drbdadm secondary $DRBD_RESOURCE
....
}
So I have some questions for developers:
1. Is it nessesary to put drbd in secondary mode if it run as master?
2. Can this part of code stop my resources when i return standby node?
online?
3. What can happend if I remove demoting code?
I think it must be like this
drbd_start() {
....
$OCF_RUNNING_MASTER)
ocf_log warn "$DRBD_RESOURCE already Primary."
rc=$OCF_SUCCESS
break
;;
...
}
I shall try this, may be next night (to prevent rebooting my virtual
servers in work time).
Thanks for drbd.
Bye!
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