Hi!
I noticed I’m not able to run snap anymore.
I get this error:
error: system does not fully support snapd: cannot mount squashfs image using "squashfs": mount:
it then relates to /dev/loop<X> stating that it cannot be mounted or is being used by something else.
squashfs is correctly loaded and I can mount squashfs filesystems without issues.
Should snap be updated? Does this depend on the kernel? I’m using 6.8.1
Hasn’t even been released yet in 2024. Maybe 2026 or 2028, but not yet my time-travelling brother!
6.8.1 Sorry…
Latest version of snapd (2.61.3-1) was included in Testing update 2024-03-16
Always ensure your system is up-to-date before creating a topic relating to problems.
sudo pacman -Syu
sudo pacman -Syu squashfs
Could be an hanging mount - did you restart your system?
Do you have a backup kernel - e.g. linux66?
I confirm that it works with linux 6.7.10 but not with 6.8 series.
Yes, it is. My original message was in the thread for Announcement/Testing updates, so it was clear that the system is up-to-date, being this something I spot following an update.
I just spot it too late 
It must be already not-working since the moment I switched to the newer kernel.
Same behavior here. snapd works with 6.6 and 6.7 but is not working with 6.8
just tried with kernel 6.8.3 from today’s testing update: it works again!
What is the kernel version that is working? I’m on 6.8.3-1 and it’s broken.
[chainofflowers@sobriety ~]$ uname -a
Linux sobriety 6.8.3-1-MANJARO #1 SMP PREEMPT_DYNAMIC Thu Apr 4 04:41:36 UTC 2024 x86_64 GNU/Linux
[chainofflowers@sobriety ~]$ snap install hello-world
hello-world 6.4 from Canonical✓ installed
[chainofflowers@sobriety ~]$ hello-world
Hello World!
[chainofflowers@sobriety ~]$ snap search
No search term specified. Here are some interesting snaps:
Name Version Publisher Notes Summary
josm r18969 mvo✪ - Editor for OpenStreetMap
vault 1.15.6 canonical✓ - Vault is a tool for securely accessing secrets.
artikulate 23.08.4 kde✓ - Artikulate Pronunciation Trainer
mumble v1.5.517 snapcrafters✪ - Open Source, Low Latency, High Quality Voice Chat
kolourpaint 23.08.4 kde✓ - Paint Program
insomnia 8.6.1 getinsomnia - Insomnia
clion 2023.3.4 jetbrains✓ classic A cross-platform IDE for C and C++
hey-mail 1.2.14 basecamp✓ - Email at its best, by Basecamp
superproductivity 8.0.1 johannesjo - Super Productivity – The advanced ToDo List and Productivity Tool
terminal-parrot 1.1.1 kz6fittycent - A Dancing Parrot For Your Terminal
okular 23.08.4 kde✓ - Document Viewer
whalebird 6.1.0 h3poteto - Whalebird
warzone2100 4.4.2 warzone-2100-project - Command the forces of The Project in a battle to rebuild the world.
tdhcad 24.04.02 timhirrel - Vector Graphics and Charting
minetest 5.8.0 snapcrafters✪ - Open source voxel game engine
helix 24.03 jmbrock classic Helix is a modal text editor inspired by Vim and Kakoune
steve-test-snap 1.0.1 steverydz - The snap I use for testing
Provide a search term for more specific results.
[chainofflowers@sobriety ~]$ snap --version
snap 2.61.3
snapd 2.61.3
series 16
manjaro -
kernel 6.8.3-1-MANJARO
@mikaka27 are you on snap 2.61.3? What if you reinstall it? What if you empty /var/lib/snapd?
I’m on 2.61.2, I’m on stable branch.
>>> snap --version
snap 2.61.2
snapd 2.61.2
series 16
manjaro -
kernel 6.7.12-1-MANJARO
can you try installing 2.61.3 from testing?
just switch temporarily to testing branch:
pacman-mirrors -B testing -a
pacman -Syy
pacman -S snap
pacman-mirrors -B stable -a
pacman -Syy
Same issue here:
$ sudo snap refresh:
error: system does not fully support snapd: cannot mount squashfs image using "squashfs": -----
mount: /tmp/syscheck-mountpoint-391792581: /dev/loop13 already mounted or mount point busy.
dmesg(1) may have more information after failed mount system call.
-----
$ inxi
CPU: quad core Intel Core i7-8650U (-MT MCP-) speed/min/max: 550/400/4200 MHz
Kernel: 6.8.3-1-MANJARO x86_64 Up: 9m Mem: 4.19/23.36 GiB (17.9%)
Storage: 238.47 GiB (61.7% used) Procs: 253 Shell: Zsh inxi: 3.3.33
Just updated the kernel to the 6.8.3 it was telling me was available, because 6.7 went eol.
All other packages are set to stable, and up to date.
I switched to 2.61.3 and no change:
$ sudo snap refresh:
error: system does not fully support snapd: cannot mount squashfs image using "squashfs": -----
mount: /tmp/syscheck-mountpoint-391792581: /dev/loop13 already mounted or mount point busy.
dmesg(1) may have more information after failed mount system call.
-----
I’m about as deep into this as I want to be. I’m just a user. I created an account here to +1 that there is an issue. Snaps aren’t critical to my workflow, so I can wait, or revert kernel if I have to.
so, it works on testing but not on stable.
I bet it depends on some fuse libs.
I won’t have time to look into that this week, maybe someone else can jump in? it would be interesting to try upgrading some fuse packages from testing…
Same problem here
$ inxi
CPU: 10-core (2-mt/8-st) 12th Gen Intel Core i7-1255U (-MST AMCP-)
speed/min/max: 420/400/4700:3500 MHz Kernel: 6.8.4-1-MANJARO x86_64 Up: 12m
Mem: 4.68/15.31 GiB (30.6%) Storage: 476.94 GiB (6.3% used) Procs: 295
Shell: Zsh inxi: 3.3.33
$ snap version
snap 2.61.2
snapd 2.61.2
series 16
manjaro -
kernel 6.8.4-1-MANJARO
$ snap refresh
error: system does not fully support snapd: cannot mount squashfs image using "squashfs": -----
mount: /tmp/syscheck-mountpoint-3871054951: /dev/loop19 already mounted or mount point busy.
dmesg(1) may have more information after failed mount system call.
-----
$ cat /proc/self/mountinfo
24 29 0:22 / /proc rw,nosuid,nodev,noexec,relatime shared:5 - proc proc rw
25 29 0:23 / /sys rw,nosuid,nodev,noexec,relatime shared:6 - sysfs sys rw
26 29 0:5 / /dev rw,nosuid,relatime shared:2 - devtmpfs dev rw,size=8149000k,nr_inodes=2037250,mode=755,inode64
27 29 0:24 / /run rw,nosuid,nodev,relatime shared:12 - tmpfs run rw,mode=755,inode64
28 25 0:25 / /sys/firmware/efi/efivars rw,nosuid,nodev,noexec,relatime shared:7 - efivarfs efivarfs rw
29 1 8:34 / / rw,noatime shared:1 - ext4 /dev/sdc2 rw
30 25 0:6 / /sys/kernel/security rw,nosuid,nodev,noexec,relatime shared:8 - securityfs securityfs rw
31 26 0:26 / /dev/shm rw,nosuid,nodev shared:3 - tmpfs tmpfs rw,inode64
32 26 0:27 / /dev/pts rw,nosuid,noexec,relatime shared:4 - devpts devpts rw,gid=5,mode=620,ptmxmode=000
33 25 0:28 / /sys/fs/cgroup rw,nosuid,nodev,noexec,relatime shared:9 - cgroup2 cgroup2 rw,nsdelegate,memory_recursiveprot
34 25 0:29 / /sys/fs/pstore rw,nosuid,nodev,noexec,relatime shared:10 - pstore pstore rw
35 25 0:30 / /sys/fs/bpf rw,nosuid,nodev,noexec,relatime shared:11 - bpf bpf rw,mode=700
36 24 0:31 / /proc/sys/fs/binfmt_misc rw,relatime shared:13 - autofs systemd-1 rw,fd=37,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=3226
37 26 0:20 / /dev/mqueue rw,nosuid,nodev,noexec,relatime shared:14 - mqueue mqueue rw
38 25 0:7 / /sys/kernel/debug rw,nosuid,nodev,noexec,relatime shared:15 - debugfs debugfs rw
39 26 0:32 / /dev/hugepages rw,nosuid,nodev,relatime shared:16 - hugetlbfs hugetlbfs rw,pagesize=2M
40 25 0:12 / /sys/kernel/tracing rw,nosuid,nodev,noexec,relatime shared:17 - tracefs tracefs rw
60 25 0:34 / /sys/kernel/config rw,nosuid,nodev,noexec,relatime shared:18 - configfs configfs rw
41 25 0:33 / /sys/fs/fuse/connections rw,nosuid,nodev,noexec,relatime shared:19 - fusectl fusectl rw
42 29 7:0 / /var/lib/snapd/snap/bare/5 ro,nodev,relatime shared:20 - squashfs /dev/loop0 ro,errors=continue,threads=single
43 29 7:1 / /var/lib/snapd/snap/core18/2812 ro,nodev,relatime shared:21 - squashfs /dev/loop1 ro,errors=continue,threads=single
44 29 7:2 / /var/lib/snapd/snap/core20/2105 ro,nodev,relatime shared:22 - squashfs /dev/loop2 ro,errors=continue,threads=single
45 29 7:3 / /var/lib/snapd/snap/core20/2182 ro,nodev,relatime shared:23 - squashfs /dev/loop3 ro,errors=continue,threads=single
46 29 7:4 / /var/lib/snapd/snap/core22/1033 ro,nodev,relatime shared:24 - squashfs /dev/loop4 ro,errors=continue,threads=single
47 29 7:5 / /var/lib/snapd/snap/gnome-3-28-1804/198 ro,nodev,relatime shared:25 - squashfs /dev/loop5 ro,errors=continue,threads=single
48 29 7:6 / /var/lib/snapd/snap/core22/1122 ro,nodev,relatime shared:26 - squashfs /dev/loop6 ro,errors=continue,threads=single
49 29 7:8 / /var/lib/snapd/snap/gnome-3-38-2004/143 ro,nodev,relatime shared:27 - squashfs /dev/loop8 ro,errors=continue,threads=single
50 29 7:7 / /var/lib/snapd/snap/gnome-42-2204/172 ro,nodev,relatime shared:28 - squashfs /dev/loop7 ro,errors=continue,threads=single
51 29 7:10 / /var/lib/snapd/snap/gtk-common-themes/1535 ro,nodev,relatime shared:29 - squashfs /dev/loop10 ro,errors=continue,threads=single
52 29 7:9 / /var/lib/snapd/snap/gnome-42-2204/176 ro,nodev,relatime shared:30 - squashfs /dev/loop9 ro,errors=continue,threads=single
53 29 7:11 / /var/lib/snapd/snap/hugo/18900 ro,nodev,relatime shared:31 - squashfs /dev/loop11 ro,errors=continue,threads=single
54 29 7:12 / /var/lib/snapd/snap/kf5-5-105-qt-5-15-9-core22/11 ro,nodev,relatime shared:32 - squashfs /dev/loop12 ro,errors=continue,threads=single
55 29 7:13 / /var/lib/snapd/snap/hugo/18952 ro,nodev,relatime shared:33 - squashfs /dev/loop13 ro,errors=continue,threads=single
56 29 7:14 / /var/lib/snapd/snap/skype/337 ro,nodev,relatime shared:34 - squashfs /dev/loop14 ro,errors=continue,threads=single
57 29 7:15 / /var/lib/snapd/snap/skype/340 ro,nodev,relatime shared:35 - squashfs /dev/loop15 ro,errors=continue,threads=single
58 29 7:16 / /var/lib/snapd/snap/snap-store/1120 ro,nodev,relatime shared:36 - squashfs /dev/loop16 ro,errors=continue,threads=single
59 29 7:17 / /var/lib/snapd/snap/snap-store/1122 ro,nodev,relatime shared:37 - squashfs /dev/loop17 ro,errors=continue,threads=single
61 29 7:18 / /var/lib/snapd/snap/snapd/20671 ro,nodev,relatime shared:38 - squashfs /dev/loop18 ro,errors=continue,threads=single
62 29 7:19 / /var/lib/snapd/snap/snapd/21184 ro,nodev,relatime shared:39 - squashfs /dev/loop19 ro,errors=continue,threads=single
63 29 7:20 / /var/lib/snapd/snap/spotify/74 ro,nodev,relatime shared:40 - squashfs /dev/loop20 ro,errors=continue,threads=single
64 29 7:22 / /var/lib/snapd/snap/spotify/75 ro,nodev,relatime shared:42 - squashfs /dev/loop22 ro,errors=continue,threads=single
65 29 7:21 / /var/lib/snapd/snap/todoist/1293 ro,nodev,relatime shared:41 - squashfs /dev/loop21 ro,errors=continue,threads=single
66 29 7:23 / /var/lib/snapd/snap/todoist/1295 ro,nodev,relatime shared:43 - squashfs /dev/loop23 ro,errors=continue,threads=single
68 29 0:35 / /tmp rw,noatime shared:66 - tmpfs tmpfs rw,inode64
70 29 8:33 / /boot/efi rw,relatime shared:92 - vfat /dev/sdc1 rw,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro
72 36 0:36 / /proc/sys/fs/binfmt_misc rw,nosuid,nodev,noexec,relatime shared:94 - binfmt_misc binfmt_misc rw
96 27 0:52 / /run/user/1000 rw,nosuid,nodev,relatime shared:752 - tmpfs tmpfs rw,size=1632148k,nr_inodes=408037,mode=700,uid=1000,gid=1000,inode64
158 96 0:56 / /run/user/1000/doc rw,nosuid,nodev,relatime shared:804 - fuse.portal portal rw,user_id=1000,group_id=1000
615 96 0:58 / /run/user/1000/gvfs rw,nosuid,nodev,relatime shared:897 - fuse.gvfsd-fuse gvfsd-fuse rw,user_id=1000,group_id=1000
767 29 0:59 / /keybase ro,nosuid,nodev,relatime shared:948 - fuse keybase-redirector ro,user_id=0,group_id=0,allow_other
894 96 0:60 / /run/user/1000/keybase/kbfs rw,nosuid,nodev,relatime shared:963 - fuse /dev/fuse rw,user_id=1000,group_id=1000
81 27 0:24 /snapd/ns /run/snapd/ns rw,nosuid,nodev,relatime - tmpfs run rw,mode=755,inode64
1420 81 0:4 mnt:[4026532513] /run/snapd/ns/spotify.mnt rw - nsfs nsfs rw
Same problem here. I’m at 6.8.4-1 and have the same error message.
error: system does not fully support snapd: cannot mount squashfs image using "squashfs":
----- mount: /tmp/syscheck-mountpoint-4262228191: /dev/loop16 it cannot be mounted or is being used by something else
Off-topic: The Me too's are fast and furious today.
The accepted solution doesn’t work for me.
Downgraded to snap 16-2.61.2 and Kernel 6.7.12-1 to get snaps working again.
I am also facing the same issue.
➜ ~ uname --all
Linux adyel-linux 6.8.4-1-MANJARO #1 SMP PREEMPT_DYNAMIC Thu Apr 4 20:38:32 UTC 2024 x86_64 GNU/Linux