Storage getting slow down between 00:00 and 00:30.

[Gilberto Ferreira]

Hi there folks.

We have 3 Proxmox VE 9 nodes with share a HBA Storage. We don't have the storage model, because the provider didn't disclosure it.
The storage has a 6TB LUN in which we have an OCFS2 mounted.
During the day everything is completely normal.
We can create/destroy VM and take snapshot as well.
No slow down at all. Nothing.
But when clock hits midnight, everything goes down hill.
Even a single df command in Proxmox SHELL tooks some 5 secs to show the mounted points.
Backup task ran at 22h everyday.
FSTrim timer will never took 30 minutos to be complete.
I have another client with similar scenario and nothing happens like this one.
This problem has stopped for some day in the past, but are back again about 1 or 2 months.

So, I am in a dead end!
Anybody has some advice?

Thanks a lot

 

[UdoB]

Look for a daily cronjob in /etc/cron.d/ and in /etc/cron.daily/ and run crontab -e (for the current user, usually root) and run systemctl list-timers ...

 

[Gilberto Ferreira]

Look for a daily cronjob in /etc/cron.d/ and in /etc/cron.daily/ and run crontab -e (for the current user, usually root) and run systemctl list-timers ...

Yeah... That was my first thing to check.
I even deisable fstrim.timer to see if this can make some difference. Nothing.
Attached is the list os task on systemctl.