Andreas and I checked the effect of backing store to this as upstream correctly mentioned that fallocate is supposed to be rather fast.
SLOW: EXT4 -> ZFS-image file -> LXD container -> libvirt SLOW: Host-on-ZFS -> libvirt Fast: Host-on-ext4 -> libvirt Fast: Host-on-tmpfs -> libvirt It seems we can assume that ZFS is required to get the slowdown-effect in this use case. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1847105 Title: very slow disk creation, snapshotting To manage notifications about this bug go to: https://bugs.launchpad.net/virt-manager/+bug/1847105/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
