Meanwhile, the bug has been fixed again. I didn't catch an update on the package "util-linux", though. Maybe it was an issue in the squashfs filesystem or kernel after all.
How can I now close this bug? -- You received this bug notification because you are a member of Debcrafters packages, which is subscribed to util-linux in Ubuntu. https://bugs.launchpad.net/bugs/2120963 Title: losetup fails on image file within squashfs Status in util-linux package in Ubuntu: New Bug description: I'm using Ubuntu 25.04. This was working with this Ubuntu version a few weeks ago, and failed with a recent update. I have an image of an SD-card within a squashfs container. This SD card is partitioned, so the image contains a partition table. What I'm doing: > mkdir -p /tmp/mnt/sqfs > mkdir -p /tmp/mnt/img > sudo mount container.sqfs /tmp/mnt/sqfs > sudo losetup -Pf /tmp/mnt/sqfs/sd-card.img What I would expect to happen: A loopback device gets created with the partitions of the SD-card image. I could then mount those loopback devices to (read only) access their content without extracting the image from squashfs. What instead happens: losetup: /tmp/mnt/sqfs/sd-card.img: failed to set up loop device: Invalid argument After this, I can't even unmount the squashfs container anymore: > sudo umount /tmp/mnt/sqfs umount: /tmp/mnt/sqfs: target is busy. Copying the image file out of the squashfs mountpoint (extracting it) works. And then I can successfully create the loopback device on that extracted image file. It just doesn't work within the mounted squashfs. I've used this a lot in the past, so I'm certain this was working. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/2120963/+subscriptions -- Mailing list: https://launchpad.net/~debcrafters-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~debcrafters-packages More help : https://help.launchpad.net/ListHelp
