2 
$ sudo snap remove audacity
error: system does not fully support snapd: cannot mount squashfs image using "squashfs": mount:
       /tmp/sanity-mountpoint-881202120: wrong fs type, bad option, bad superblock on /dev/loop23,
       missing codepage or helper program, or other error.

I've removed and installed snap I've checked all other similar question but most of them doesn't apply dev/loopmounts. Since it's getting mounted by snap I don't know how to interfere

Two answers suggested me to install but squashfuse is already newest version.

r@ig:~$ sudo apt-get install libsquashfuse0 squashfuse fuse 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
fuse is already the newest version (2.9.9-3).
libsquashfuse0 is already the newest version (0.1.103-2).
squashfuse is already the newest version (0.1.103-2).
0 upgraded, 0 newly installed, 0 to remove and 17 not upgraded.
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4
  • I think you should reinstall snapd
    – user1166068
    May 1, 2021 at 16:40
  • have you checked this unix.stackexchange.com/questions/315063/… ?
    – Parsa
    May 1, 2021 at 16:50
  • What kernel version do you have?
    – sancho.s ReinstateMonicaCellio
    May 2, 2021 at 0:10
  • 1
    @TheDark_Command since it's a loop that answer doesn't apply my case sudo mkfs.ext4 /dev/loop23 mke2fs 1.45.5 (07-Jan-2020) mkfs.ext4: Device size reported to be zero. Invalid partition specified, or partition table wasn't reread after running fdisk, due to a modified partition being busy and in use. You may need to reboot to re-read your partition table. @sancho.sReinstateMonicaCellio my linux kernel is: 5.8.0-50-generic
    – Uchiha Itachi
    May 2, 2021 at 23:50

2 Answers 2

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0

It seems you are missing some required packages from your system.

Try installing required packages to handle squash file system like so:

sudo apt install squashfs-tools squashfuse fuse

Then reinstall snapd like so:

sudo apt install --reinstall snapd

Then reboot your system.

Improve this answer
4
  • I think the problem is really wrong fs type, bad option, bad superblock on /dev/loop23, as error indicates because I have all those packages. I've updated the question.
    – Uchiha Itachi
    May 1, 2021 at 16:38
  • @UchihaItachi Have you reinstalled snapd then rebooted your machine? … Snap loops are read only and get recreated after each boot… So usual disk checks and terminology don’t apply to them the way you think
    – Raffa
    May 1, 2021 at 17:10
  • Yes I reinstalled many times but still same error.
    – Uchiha Itachi
    May 1, 2021 at 21:59
  • Any update in this situation?
    – Prasannjeet Singh
    Sep 30, 2022 at 11:02
0

Adapted from this, which was useful for quite a few, you can try

sudo apt-get install libsquashfuse0 squashfuse fuse 
sudo apt-get install --reinstall snapd

You might need to reboot.

As per some reports, a kernel update might also be sufficient, YMMV.

Related

  1. system does not fully support snapd: cannot mount squashfs image using "squashfs - mount failed (I am not sure this is included in your "all other similar question").
  2. https://forum.radxa.com/t/snap-on-xubuntu/511
  3. https://github.com/ubuntu/microk8s/issues/362
  4. https://bugs.launchpad.net/snapd/+bug/1859703
Improve this answer
2
  • I've updated the question with your suggestion. That post that you linked one of the thing I was trying to install squashfs but it was already the newest version.
    – Uchiha Itachi
    May 1, 2021 at 16:36
  • libsquashfuse0 is a dependency for squashfuse … It’s enough to install squashfuse… Why are you installing both?… Please see packages.ubuntu.com/focal/squashfuse
    – Raffa
    May 1, 2021 at 17:22

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