[ClusterLabs] Lustre MDT/OST Mount Failures During Virtual Machine Reboot with Pacemaker

[chenzufei at gmail.com]

Thank you for your advice.

The reason I understand is as follows: 
During reboot, both the system and Pacemaker will unmount the Lustre resource simultaneously. 
If the system unmounts first and Pacemaker unmounts afterward, Pacemaker will immediately return success. 
However, at this point, the system's unmounting process is not yet complete, 
causing Pacemaker to mount on the target end, which triggers this issue.

My current modification is as follows: 
Add the following lines to the file `/usr/lib/systemd/system/resource-agents-deps.target`:
```
After=remote-fs.target  
Before=shutdown.target reboot.target halt.target
```

After making this modification, the issue no longer occurs during reboot.




chenzufei at gmail.com
 
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