I'm using Ubuntu 20.04 LTS.

My snapd service is unavailable :

$ systemctl status snapd.service

● snapd.service - Snap Daemon

     Loaded: loaded (/lib/systemd/system/snapd.service; enabled; vendor preset: enabled)

     Active: deactivating (stop-sigterm) (Result: timeout)

TriggeredBy: ● snapd.socket

   Main PID: 29952 (snapd)

      Tasks: 10 (limit: 8186)

     Memory: 12.8M

     CGroup: /system.slice/snapd.service

             └─29952 /usr/lib/snapd/snapd



Oct 27 00:47:07 seb-C70D-B-311 systemd[1]: Starting Snap Daemon...

Oct 27 00:47:07 seb-C70D-B-311 snapd[29952]: AppArmor status: apparmor is enabled and all features are available

Oct 27 00:47:07 seb-C70D-B-311 snapd[29952]: AppArmor status: apparmor is enabled and all features are available

Oct 27 00:48:37 seb-C70D-B-311 systemd[1]: snapd.service: start operation timed out. Terminating.

$ time snap version

snap    2.52.1

snapd   unavailable

series  -



real    0m25.075s

user    0m0.036s

sys 0m0.060s

My /var/lib/snapd filesystem is full :

$ df -PTh /var/lib/snapd

Filesystem                                                            Type  Size  Used Avail Use% Mounted on

/dev/mapper/VG_Samsung_SSD_860_EVO_1TB__S3Z9NB0K4019-LV_var_lib_snapd ext4  4.9G  4.9G     0 100% /var/lib/snapd

$ ls -lh /var/lib/snapd/snaps

total 4.0G

-rw------- 1 root root  68K Sep 10 23:08 acrordrdc_53.snap

-rw------- 1 root root  68K Sep 20 13:03 acrordrdc_62.snap

-rw------- 2 root root 4.0K Sep 26 12:44 bare_5.snap

-rw------- 1 root root 146M Oct 10 21:58 chromium_1781.snap

-rw------- 2 root root 145M Oct 23 12:29 chromium_1801.snap

-rw------- 1 root root  56M Jun 23 18:57 core18_2074.snap

-rw------- 1 root root  56M Aug 15 17:45 core18_2128.snap

-rw------- 1 root root  62M Jul 24 10:15 core20_1081.snap

-rw------- 1 root root  62M Oct  8 22:05 core20_1169.snap

-rw------- 1 root root 100M Oct 15 11:18 core_11798.snap

-rw------- 1 root root 100M Oct 21 12:26 core_11993.snap

-rw------- 2 root root 163M Dec 19  2020 gnome-3-28-1804_145.snap

-rw------- 1 root root 165M Jul  8 16:18 gnome-3-28-1804_161.snap

-rw------- 1 root root 219M Jan  9  2021 gnome-3-34-1804_66.snap

-rw------- 1 root root 219M Jun 14 14:23 gnome-3-34-1804_72.snap

-rw------- 1 root root  66M Apr 22  2021 gtk-common-themes_1515.snap

-rw------- 1 root root  66M Sep 26 12:44 gtk-common-themes_1519.snap

-rw------- 2 root root 140K Aug 23  2020 gtk2-common-themes_13.snap

drwxr-xr-x 2 root root 4.0K Jul 10  2020 partial/

-rw------- 1 root root  33M Oct 13 20:06 snapd_13270.snap

-rw------- 1 root root  33M Oct 20 21:14 snapd_13640.snap

-rw------- 1 root root 136M Aug 23 00:17 whatsapp-for-linux_26.snap

-rw------- 1 root root 112M Oct 18 15:58 whatsapp-for-linux_27.snap

-rw------- 2 root root 304M Feb  6  2021 wine-platform-5-stable_16.snap

-rw------- 1 root root 304M Sep 26 12:44 wine-platform-5-stable_18.snap

-rw------- 2 root root 323M Sep 20 13:03 wine-platform-6-stable_8.snap

-rw------- 1 root root 347M Oct  8 22:05 wine-platform-runtime_250.snap

-rw------- 1 root root 347M Oct 15 11:19 wine-platform-runtime_251.snap

-rw------- 1 root root 347M Oct 23 12:29 wine-platform-runtime_252.snap

-rw------- 1 root root 164M Oct 26 22:50 wine-platform-runtime_252.snap.partial

Howto can I free up space properly on my /var/lib/snapd filesystem when snapd is unavailable ?

EDIT0 : Cannot start the snapd service successfully, maybe because my /var/lib/snapd filesystem is full.