Proxmox VMs randomly freeze

[STV]

Hello,
I have some problems with my proxmox Virtual Environment 5.4-13. the node and some virtual machines freeze randomly.
Machines concerned are then no longer accessible for a few moments, then are accessible again. This problem is present on 3 out of 4 machines (see capture). Only TSE is ok.

Here is the list of servers:
- PROMOX
- PFSENSE
- DC (Windows server 2012 R2)
- TSE (Windows server 2012 R2)

I had basically a difference between the memory displayed on proxmox and those of the 2 windows servers. I solved the problem by installing the balooning service on both vms.

Here's what I tried to do:
- Restart the node
- Restart vms
- replace the ram bar
- vms restoration

When I create a new vm, the problem is immediately present.

thank you in advance for your help

Max

 

[STV]

Anyone ? No ideas ?

 

[aaron]

Do you do performance monitoring of the Server? It's possible that some resources are scarce. For example, the disks could not be fast enough / overwhelmed.

If you do not do any extra monitoring have a look at the summary page of your server. A high IO delay when your VMs are hanging can be an indicator that the disks are the cause.

 

[STV]

Hello Aaron, thanks for your answer. Indeed, the impacted machines seem to have a rather strong I/O curve. However, on the front of the server, I don't have a disk malfunction indicator. The first capture is for the dc server, the second for the tse. Could it be due to one of the disks itself? Is there a way to test the disks to locate the problem?

Thanks a lot