Desabilite e desmonte os diretórios
systemctl disable mnt-pve-testdir.mount
umount /mnt/pve/testdirRemova as montagens
nano /proc/mountsRemova do systemd para que não remontem no reboot
rm /etc/systemd/system/mnt-pve-testdir.mountrebootsystemctl disable mnt-pve-testdir.mount
umount /mnt/pve/testdirnano /proc/mountsrm /etc/systemd/system/mnt-pve-testdir.mountreboot