Systemd : can't get rid of annoying mountboot errors due to UN-installed applications

[falke]

Hello everyone,

I’ve been getting these annoying boot errors for a while now. It’s more aesthetic than anything else, but…

Some time ago I wanted to test snapd, which I very quickly uninstalled because this linux operating mode bored me to no end…

Having said that, snapd seems to be getting in very deep, and I’d love to finally have a clean system…

the error lines do indeed correspond to snap applications I had tested… I have uninstalled snapd though, but there’s only one package left that didn’t uninstall with everything else (libsnapd-glib** : je suis sous debian Sid).

``
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-firefox-3206.mount - Mount unit for firefox, revision 3206.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-firefox-3358.mount - Mount unit for firefox, revision 3358.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-gnome\x2d3\x2d28\x2d1804-198.mount - Mount unit for gnome-3-28-1804, revision 198.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-gnome\x2d3\x2d38\x2d2004-140.mount - Mount unit for gnome-3-38-2004, revision 140.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-gnome\x2d3\x2d38\x2d2004-143.mount - Mount unit for gnome-3-38-2004, revision 143.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-gnome\x2d42\x2d2204-132.mount - Mount unit for gnome-42-2204, revision 132.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-gnome\x2d42\x2d2204-141.mount - Mount unit for gnome-42-2204, revision 141.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-gnome\x2dweather-5.mount - Mount unit for gnome-weather, revision 5.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-gnome\x2dweather-6.mount - Mount unit for gnome-weather, revision 6.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-gtk\x2dcommon\x2dthemes-1535.mount - Mount unit for gtk-common-themes, revision 1535.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-john\x2dthe\x2dripper-581.mount - Mount unit for john-the-ripper, revision 581.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-john\x2dthe\x2dripper-610.mount - Mount unit for john-the-ripper, revision 610.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-snap\x2dstore-959.mount - Mount unit for snap-store, revision 959.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-spotify-68.mount - Mount unit for spotify, revision 68.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-spotify-70.mount - Mount unit for spotify, revision 70.
nov. 18 08:58:28 falke-netbook systemd[1]: Failed to mount snap-whatsapp\x2dapp-2.mount - Mount unit for whatsapp-app, revision 2.

rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/en_US.aff’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/en_US.dic’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr.aff’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr.dic’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_BE.aff’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_BE.dic’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_CA.aff’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_CA.dic’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_CH.aff’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_CH.dic’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_FR.aff’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_FR.dic’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_LU.aff’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_LU.dic’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_MC.aff’: Système de fichiers accessible en lecture seulement
rm: impossible de supprimer ‘/var/snap/firefox/common/host-hunspell/fr_MC.dic’: Système de fichiers accessible en lecture seulement
dpkg: erreur de traitement du paquet snapd (–purge) :
le sous-processus paquet snapd script post-removal installé a renvoyé un état de sortie d’erreur 1
Des erreurs ont été rencontrées pendant l’exécution :
snapd
E: Sub-process /usr/bin/dpkg returned an error code (1)
Échec de l’installation d’un paquet. Tentative de récupération :

By the way, here's the error message I get when I uninstall : 

do I still have to manually delete what's in /var/snap *? 

Or is the problem related to something else? 

my system always mentions the following systemd units ????

● snap-firefox-3206.mount loaded failed failed Mount unit for firefox, >
● snap-firefox-3358.mount loaded failed failed Mount unit for firefox, >
● snap-gnome\x2d3\x2d28\x2d1804-198.mount loaded failed failed Mount unit for gnome-3-2>
● snap-gnome\x2d3\x2d38\x2d2004-140.mount loaded failed failed Mount unit for gnome-3-3>
● snap-gnome\x2d3\x2d38\x2d2004-143.mount loaded failed failed Mount unit for gnome-3-3>
● snap-gnome\x2d42\x2d2204-132.mount loaded failed failed Mount unit for gnome-42->
● snap-gnome\x2d42\x2d2204-141.mount loaded failed failed Mount unit for gnome-42->
● snap-gnome\x2dweather-5.mount loaded failed failed Mount unit for gnome-wea>
● snap-gnome\x2dweather-6.mount loaded failed failed Mount unit for gnome-wea>
● snap-gtk\x2dcommon\x2dthemes-1535.mount loaded failed failed Mount unit for gtk-commo>
● snap-john\x2dthe\x2dripper-581.mount loaded failed failed Mount unit for john-the->
● snap-john\x2dthe\x2dripper-610.mount loaded failed failed Mount unit for john-the->
● snap-snap\x2dstore-959.mount loaded failed failed Mount unit for snap-stor>
● snap-spotify-68.mount loaded failed failed Mount unit for spotify, >
● snap-spotify-70.mount loaded failed failed Mount unit for spotify, >
● snap-whatsapp\x2dapp-2.mount loaded failed failed Mount unit for whatsapp->

PS : I've removed the contents of /var/snap

only /var/snap/firefox remains, on the grounds that it would be write-only, and that doesn't change the fact that those damn systemd units are still displayed

Thank you for your help..

[falke]

Okay, I got rid of all that crap.

i’m giving the solution for anyone who’d like to cleanly uninstall snapd and the services around it.

basically, I deleted the /var/snap directory (as the paquet manager, does’nt do it)

As a result, some systemd mount units were still referring to the /var/snap directory and these applications.

make a :

systemctl list-units --type=mount

to list them, then one by one, do (adapt with the unit name) :

sudo systemctl stop unit-name.mount
sudo systemctl disable nom-de-l-unite.mount
sudo systemctl daemon-reload
sudo rm /etc/systemd/system/unit-name.mount

no more errors on boot.

snapd really digs in deep