Christian I set this up back when without properly researching systemd.mount, particularly the automatic dependencies. I make half of the changes you recommended (Requires=virt-guest-shutdown.target; After=virt-guest- shutdown.target) and it made no change, the I/O errors still showed up. I'm attaching the custom systemd services and the libvirt hook for your information.
But, instead of following in the direction of a custom setup I will transition this to /etc/fstab parent/child mounts (the child mount is a .vhd file on the parent fs that will now be mounted using the loop device instead of nbd) and a simpler libvirt hook with mount/umount functionality. Sorry for making this more complicated than they should have been. Regards Pedro -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1924494 Title: Systemd shutdown order unmounts filesystem used by qemu/kvm guest before shutting down the guest To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1924494/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
