Proxmox VM random freezes

[MultiLAN]

Hi everyone, I´ve a problem with my Proxmox Virtual Environment 4.4-1/eb2d6f1e. I´m running 2 VMs both are Windows 2008 Server, 1 of them randomly freezes, nothing happens when you try to do something from the console, the only solution is to force restart of this VM. The other VM with Windows Server 2008 continue running okey.
The Proxmox logs when the VM freezes is:

Aug 27 08:08:00 server systemd[1]: Started Proxmox VE replication runner.
Aug 27 08:09:00 server systemd[1]: Starting Proxmox VE replication runner...
Aug 27 08:09:00 server systemd[1]: Started Proxmox VE replication runner.
Aug 27 08:10:00 server systemd[1]: Starting Proxmox VE replication runner...
Aug 27 08:10:00 server systemd[1]: Started Proxmox VE replication runner.
Aug 27 08:11:00 server systemd[1]: Starting Proxmox VE replication runner...
Aug 27 08:11:00 server systemd[1]: Started Proxmox VE replication runner.
Aug 27 08:11:49 server rrdcached[1155]: flushing old values
Aug 27 08:11:49 server rrdcached[1155]: rotating journals
Aug 27 08:11:49 server rrdcached[1155]: started new journal /var/lib/rrdcached/journal/rrd.journal.1598526709.874546
Aug 27 08:11:49 server rrdcached[1155]: removing old journal /var/lib/rrdcached/journal/rrd.journal.1598519509.874545
Aug 27 08:12:00 server systemd[1]: Starting Proxmox VE replication runner...
Aug 27 08:12:00 server systemd[1]: Started Proxmox VE replication runner.
Aug 27 08:13:00 server systemd[1]: Starting Proxmox VE replication runner...
Aug 27 08:13:00 server systemd[1]: Started Proxmox VE replication runner.
Aug 27 08:14:00 server systemd[1]: Starting Proxmox VE replication runner...
Aug 27 08:14:00 server systemd[1]: Started Proxmox VE replication runner.
Aug 27 08:15:00 server systemd[1]: Starting Proxmox VE replication runner...
Aug 27 08:15:00 server systemd[1]: Started Proxmox VE replication runner.

I´ll be very grateful if someone can help us

 

[Stefan_R]

Nothing unusual in the logs. Also check your logs within the VM, to see if maybe the crash is unrelated to PVE.

As a next step, check for hardware errors, sometimes bad RAM for example can cause such issues.

In any case, more information about your setup is needed. What storage are you using, VM configs ('qm config <vmid>') of both VMs, 'dmesg' logs at crash time, not just journal, 'pveversion -v', etc...

 

[g777]

Using Default (LSI 53C895A) instead of VirtIO driver should be more stable and run old Windows faster.
It's written in docs, that VirtIO is paravirtualized kernel driver, it "sounds" faster and it is in most cases, but with old OS old drivers work better.