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Hello,
First of all I apologize if I managed to misfile this issue, I honestly have no idea where else to report it.
As for the issue - in the past ~week I noticed that our CI jobs (which are using Rawhide Vagrant libvirt boxes from https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Cloud/x86_64/images/) take an unusually long time (the difference is 30 - 60 minutes). Upon closer inspection it's apparent the images take a really long time to get processed by Vagrant and then by libvirt:
02:50:06 ==> rawhide_selinux: Adding box 'fedora-rawhide-cloud' (v0) for provider: libvirt 02:50:06 rawhide_selinux: Downloading: https://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Cloud/x86_64/images/Fedora-Cloud-Base-Vagrant-Rawhide-20210623.n.0.x86_64.vagrant-libvirt.box 02:50:19 03:00:14 ==> rawhide_selinux: Successfully added box 'fedora-rawhide-cloud' (v0) for 'libvirt'! 03:00:14 ==> rawhide_selinux: Uploading base box image as volume into Libvirt storage... 03:22:05 ==> rawhide_selinux: Creating image (snapshot of base box volume).
The download itself takes a couple of seconds, but the bsdtar, which Vagrant calls afterwards, takes the remaining ~10 minutes in this case:
bsdtar
# time /opt/vagrant/embedded/bin/bsdtar --no-same-owner --no-same-permissions -v -x -m -f Fedora-Cloud-Base-Vagrant-Rawhide-20210626.n.0.x86_64.vagrant-libvirt.box x box.img x Vagrantfile x metadata.json real 9m28.711s user 1m32.817s sys 0m6.098s
Also, after unpacking, the image is clearly not sparse:
# file box.img box.img: QEMU QCOW Image (v2), 42949672960 bytes # ll -h box.img -rwxr-xr-x. 1 root root 38G Jun 26 19:55 box.img
This explains why it takes so long for the image to get imported into the libvirt storage (22 minutes in this very case).
This has to change quite recently. Just to confirm, here's a F34 Vagrant-libvirt image:
# wget https://dl.fedoraproject.org/pub/fedora/linux/releases/34/Cloud/x86_64/images/Fedora-Cloud-Base-Vagrant-34-1.2.x86_64.vagrant-libvirt.box ... # time /opt/vagrant/embedded/bin/bsdtar --no-same-owner --no-same-permissions -v -x -m -f Fedora-Cloud-Base-Vagrant-34-1.2.x86_64.vagrant-libvirt.box x box.img x Vagrantfile x metadata.json real 0m29.522s user 0m6.796s sys 0m0.310s # file box.img box.img: QEMU QCOW Image (v2), 42949672960 bytes # ll -h box.img -rwxr-xr-x. 1 root root 1.8G Jun 26 19:56 box.img
Is this a feature or a bug? I suspect the latter.
This should be reported to the Fedora Cloud WG: https://pagure.io/cloud-sig
Hah, thank you, will do!
Metadata Update from @mrc0mmand: - Issue close_status updated to: Invalid - Issue status updated to: Closed (was: Open)
Re-filed as https://pagure.io/cloud-sig/issue/340, just for the reference.
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