VMs suddenly unresponsive and pause

[harrisonmeister]

Hi, I'm running UNRAID 6.8.3, and have a handful (less than 10) Virtual machines.

 

Yesterday I upgraded to 6.9 (beta 22) and started noticing issues with a single Windows 2019 VM - it would not start, instead replaced with a blue screen of death stating:

KMODE exception not handled

I restored from a backup of 6.8.3, and was able to rebuild the VM in question.

 

Since then, I have tried to create a new Windows Server 2019 VM, and it will start, and then freeze. This is similar to what happened yesterday.

 

In the logs, I can see this:

 

2020-06-23 12:44:49.256+0000: Domain id=30 is tainted: high-privileges
2020-06-23 12:44:49.256+0000: Domain id=30 is tainted: host-cpu
char device redirected to /dev/pts/5 (label charserial0)
2020-06-23T12:47:45.311413Z qemu-system-x86_64: warning: guest updated active QH

I looked for the error in the last line, and have since run a full parity check (as part of the restore process to 6.8.3), and in addition run both a btrfs balance and btrfs scrub.

 

I've attached anonymized diagnostics. I'm a first-time UNRAID user, and although using Linux for work, it's not my speciality, so I'm at a bit of a loss where to go from here.

 

Thanks

 

 

zoidberg-diagnostics-20200623-1455.zip

[harrisonmeister]

Can anyone help with this? This is really frustrating to have a VM just stopped responding. I can't see anything obvious in the logs and am a bit stumped.