Hello,sometimes one could be in need to keep hypervisor up (CentOS 7.2 in my case) but with all ovirt releated services stopped.
I see that sanlock and wdmd systemd units are bot part of sanlock rpm package.
In these cases, having only one single host in a lab environment, I follow this comment by Joop
So, I stop all a VMs, put env in global maintenance and then on host:
systemctl stop ovirt-ha-agent
systemctl stop ovirt-ha-broker
shutdown engine vm
On host again:
systemctl stop vdsmd
systemctl stop sanlock.service
At this point sometimes I can work, sometimes after some minutes the host restarts itself, I presume due to wdmd
In fact I see in messages:
Jul 4 17:05:47 ractor wdmd[1258]: test failed rem 26 now 804 ping 760 close 770 renewal 697 expire 777 client 1285 sanlock_2025c2ea-6205-4bc1-b29d-745b47f8f806:1
Jul 4 17:05:48 ractor wdmd[1258]: test failed rem 25 now 805 ping 760 close 770 renewal 697 expire 777 client 1285 sanlock_2025c2ea-6205-4bc1-b29d-745b47f8f806:1
Jul 4 17:05:49 ractor wdmd[1258]: test failed rem 24 now 806 ping 760 close 770 renewal 697 expire 777 client 1285 sanlock_2025c2ea-6205-4bc1-b29d-745b47f8f806:1
Jul 4 17:05:50 ractor wdmd[1258]: test failed rem 23 now 807 ping 760 close 770 renewal 697 expire 777 client 1285 sanlock_2025c2ea-6205-4bc1-b29d-745b47f8f806:1
Jul 4 17:05:51 ractor wdmd[1258]: test failed rem 22 now 808 ping 760 close 770 renewal 697 expire 777 client 1285 sanlock_2025c2ea-6205-4bc1-b29d-745b47f8f806:1
Jul 4 17:05:51 ractor systemd[1]: wdmd.service stop-sigterm timed out. Killing.
Jul 4 17:05:51 ractor systemd[1]: wdmd.service: main process exited, code=killed, status=9/KILL
Jul 4 17:05:51 ractor systemd[1]: Stopped Watchdog Multiplexing Daemon.
Jul 4 17:05:51 ractor systemd[1]: Unit wdmd.service entered failed state.
Jul 4 17:05:51 ractor systemd[1]: wdmd.service failed.
In systemd unit file for sanlock:
[Unit]
Description=Shared Storage Lease Manager
After=syslog.target
Wants=wdmd.service
Nothing special instead for wdmd.
I tried also to stop it but server still rebooted.
Also, it seems to me that sometimes sanlock is ale to stop, someties exits with "failed".
So the question is if wdmd is able to be stopped or if it is the same behavior of old watchdogd on Linux
Thanks in advance,
Gianluca