Hi all,
I'm having problems getting drbd9 to start on RHEL 7.6.
Previously was using drbd8 on RHEL6.
In that scenario, we had a bash script which had the following (at a high
level):
(1) install the drbd packages
(2) update drbd config file(s) with resource data
(3) create the meta data via 'drbdadm create-md <resource'>
(4) bring up the resource 'drbdadm up <resource>'
(5) determine which side was primary and set it: 'drbdadm primary --force
<resource>'
(6) likewise, for the secondary: 'drbdadm secondary drbdadm secondary
The first node would be brought up and this scrip was executed.
The drbd-overview output would show that the remote resource was unavailable,
as expected.
Eventually, the 2nd node is brought up, the above script executed, and the drbd
resources would begin syncing.
Moving to drbd9 on RHEL7.6:
I tweaked the script a bit, but basically it's the same.
However, after it runs, the drbdadm status shows the resource as StandAlone:
[root@node1 ~]# drbdadm status
r0 role:Secondary
disk:UpToDate
node1.mycompany.com connection:StandAlone
[root@node1 ~]#
Later, I bring up the other node and same thing.
I then tried adding the following commands between steps (3) and (4):
systemctl start drbd
systemctl enable drbd
Problem now, is that the script hangs at the 'systemctl start drbd'.
Digging further, I find it's because it's waiting to connect to the remote
resource.
[root@chris-nsp1 log]# systemctl status drbd
● drbd.service - DRBD -- please disable. Unless you are NOT using a cluster
manager.
Loaded: loaded (/usr/lib/systemd/system/drbd.service; disabled; vendor
preset: disabled)
Active: activating (start) since Wed 2019-03-27 18:16:34 EST; 1min 47s ago
Main PID: 20321 (drbd)
Tasks: 3
CGroup: /system.slice/drbd.service
├─20321 /bin/bash /lib/drbd/drbd start
├─20352 drbdadm wait-con-int
└─20353 drbdsetup wait-connect-resource r0
Ideally, I’d like to bring one node up (including the starting of drbd),
perform some sanity operations, then, bring up the other node.
Is there a way to start/enable drbd without having to wait for the remote
resource?
Regards,
David
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