I have a setup as detailed below

- iSCSI Storage Domain

- Template with Thin QCOW2 disk

- Multiple VMs from Template with Thin disk

oVirt Node 4.4.4

When the VMs boots up it downloads some data to it and that leads to increase in volume size.

I see that every few seconds the VM gets paused with

"VM X has been paused due to no Storage space error."

 and then after few seconds

"VM X has recovered from paused back to up"

Sometimes after a many pause and recovery the VM dies with

"VM X is down with error. Exit message: Lost connection with qemu process."

and I have to restart the VMs.

My questions.

1. How to work around this dying VM?

2. Is there a way to use sparse disks without VM being paused again and again?

Thanks in advance.

Shantur