[PVE-User] PVE 3.4 - Debian 9 hang

[Emmanuel Kasper]

On 11/14/2017 09:41 AM, Eneko Lacunza wrote:
> Hi all,
> 
> We have a Debian 9 VM running on a v3.4 Proxmox cluster (yes I know we
> should upgrade it), that periodically hangs.
> 
> When it hangs, we can't reach it neither by network nor by Console (it
> is frezeed). Also, CPU is shown at about 52%-53% (VM has 2 cores).
> 
> It hangs quite often, about every 1-3 days, no backups running. It is
> running Icinga2.
> 
> We have other Debian 9 VMs in that cluster that don't hang (but none is
> running Icinga2)
> 
> VM config:
> - 512MB RAM (use tops at about 450MB)
> - 2 cores, 1 socket (Default -kvm64)
> - Display default
> - ide2 - CD
> - Hard disk scsi0 on ceph, writeback
> - net0 e1000 (originally had virtio)
> 
> We have tried:
> - Changing proxmox node
> - Changing network from virtio to e1000
> - Increased core number from 1 to 2
> 
> Any ideas about what can we try next?
> 
> Thanks a lot
> Eneko
> 

Hi Eneko
What is the status of the qemu process when the VM hangs ? Is it in D
state ?
Also which SCSI controller type are you using ?

Emmanuel