What were you trying to do that didn't work?
[Machines] The running nfs vm crashes when reverting snapshot

Please provide the package NVR for which bug is seen:

cockpit-machines-303-1.el9.noarch
cockpit-305-1.el9.x86_64
libvirt-dbus-1.4.1-5.el9.x86_64
libvirt-client-9.5.0-7.el9_3.x86_64

How reproducible:

100%

Steps to reproduce

1 Prepare an nfs on a third host, and prepare an image:
# yum install -y nfs-utils
# mkdir /nfs
# cat  /etc/exports
/nfs *(rw,no_root_squash,async)
# systemctl restart nfs-server
# ls /nfs
cirros.qcow2
 
2. Mount the nfs on the host with cockpit environment:
# mkdir /images
# mount $ip_nfs-server:/nfs /images/
# setsebool -P virt_use_nfs=on
 
3. Click Import VM and create a running vm based on the nfs image
 
4. Enter vm details page, click "Create snapshot" and create one snapshot with default name
 
5. Click Revert
There will be error and the vm is shutoff:

Could not revert to snapshot

End of file while reading data: Input/output error

Expected results

Revert should be successfull and not crashing the vm.

Actual results

See above.