Hi Daniel, yes falloc should be fast in many cases, but also isn't in others.
The reporter used this directly on a ZFS system. I used to recreate the slowness on stacked containers which is EXT4 -> ZFS-image file -> LXD container -> libvirt. So far it seems we can assume that ZFS is slow in this use case. I agree that on ext4 and tmpfs this is <0.02 real time. So to face the slowdown might have a ZFS component. -- 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
