I managed to set up muvirt, and get one of the “appliances” running, so provisioning a vm, starting it and running it works.
However I wanted to start a Fedora machien. And there I run in to issues. The machine goes in to status “download failed”
This is what I see in the log:
Sun Feb 22 16:05:21 2026 user.notice muvirt-provision: [fedora] downloading https://download.fedoraproject.org/pub/fedora/linux/releases/43/Server/aarch64/images/Fedora-Server-Guest-Generic-43-1.6.aarch64.qcow2 to /mnt/muvirtwork/imglibrary//EXTRA-fedora.img
Sun Feb 22 16:05:21 2026 daemon.err muvirt-provision[26269]: muvirt-provision: [fedora] downloading https://download.fedoraproject.org/pub/fedora/linux/releases/43/Server/aarch64/images/Fedora-Server-Guest-Generic-43-1.6.aarch64.qcow2 to /mnt/muvirtwork/imglibrary//EXTRA-fedora.img
Sun Feb 22 16:05:21 2026 daemon.err muvirt-provision[26269]: % Total % Received % Xferd Average Speed Time Time Time Current
Sun Feb 22 16:05:21 2026 daemon.err muvirt-provision[26269]: Dload Upload Total Spent Left Speed
Sun Feb 22 16:05:21 2026 daemon.err muvirt-provision[26269]:
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
Sun Feb 22 16:05:59 2026 daemon.err muvirt-provision[26269]:
0 989M 0 239k 0 0 312k 0 0:54:00 --:--:-- 0:54:00 312k
0 989M 0 4591k 0 0 2589k 0 0:06:31 0:00:01 0:06:30 4326k
1 989M 1 9.9M 0 0 3683k 0 0:04:35 0:00:02 0:04:33 4972k
1 989M 1 16.9M 0 0 4612k 0 0:03:39 0:00:03 0:03:36 5712k
2 989M 2 24.3M 0 0 5218k 0 0:03:14 0:00:04 0:03:10 6155k
3 989M 3 32.9M 0 0 5846k 0 0:02:53 0:00:05 0:02:48 6694k
4 989M 4 41.5M 0 0 6291k 0 0:02:41 0:00:06 0:02:35 7606k
5 989M 5 51.7M 0 0 6820k 0 0:02:28 0:00:07 0:02:21 8562k
6 989M 6 63.1M 0 0 7375k 0 0:02:17 0:00:08 0:02:09 9454k
7 989M 7 74.0M 0 0 7759k 0 0:02:10 0:00:09 0:02:01 9.9M
8 989M 8 87.9M 0 0 8362k 0 0:02:01 0:00:10 0:01:51 10.9M
10 989M 10 100M 0 0 8767k 0 0:01:55 0:00:11 0:01:44 11.8M
11 989M 11 113M 0
Sun Feb 22 16:05:59 2026 daemon.info muvirt-provision[26269]: Using image file /mnt/muvirtwork/imglibrary//EXTRA-fedora.img
Sun Feb 22 16:05:59 2026 daemon.info muvirt-provision[26269]: New volume created, path=/dev/mapper/vmdata-fedora
Sun Feb 22 16:05:59 2026 daemon.info muvirt-provision[26269]: Writing image to /dev/mapper/vmdata-fedora
Sun Feb 22 16:05:59 2026 daemon.err muvirt-provision[26269]: qemu-img: /dev/mapper/vmdata-fedora: error while converting raw: Cannot grow device files
Sun Feb 22 16:05:59 2026 daemon.info muvirt-provision[26269]: vm
Sun Feb 22 16:05:59 2026 user.notice muvirt-provision: [fedora] Failed to write image to /dev/mapper/vmdata-fedora
Sun Feb 22 16:05:59 2026 daemon.err muvirt-provision[26269]: muvirt-provision: [fedora] Failed to write image to /dev/mapper/vmdata-fedora
Looks like the download succeeds, but writing the image to the lv fails. But why it fails I cannot surmise from the logs. What could be the reason?