I ran into a similar issue when trying to use sshfs-mounted profile for firefox.
My setup: $ mkdir .remote $ sshfs <remote> .remote -o idmap=user $ ln -s .remote/snap So now /home/ubuntu/snap is a symlink to a directory /home/ubuntu/.remote/snap. When trying to run firefox, it fails with: $ firefox cannot create user data directory: /home/ubuntu/snap/firefox/1232: Not a directory Which is confusing, as /home/ubuntu/snap/firefox/1232 is a directory. Trying to strace what's going on (details in https://pastebin.com/gbeHV8L1) I found out that firefox (or snap) is confused that snap is a symlink to directory, not a directory by itself (and this limitation doesn't makes sense to me, looks like just implementation flaw of creating user directory). Not sure if this is related to the above, but experience is similar. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to firefox in Ubuntu. https://bugs.launchpad.net/bugs/1884299 Title: Snaps don't run with NFS home on AutoFS Status in firefox package in Ubuntu: Confirmed Status in snapd package in Ubuntu: Confirmed Bug description: My physical computer lab uses AutoFS home drives (per https://help.ubuntu.com/community/Autofs#Wildcard_characters). If any user tries to run chromium browser, it fails. I assume it is related to these: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1662552 But that says a fix was released, but seems toi only work for NFS home drives https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1782873 That ones is reported as a dupe but it's not, AutoFS home drives still don't work. $ chromium -v cannot create user data directory: /home/test.student2/snap/chromium/1193: Stale file handle $ tail -f /var/log/syslog Jun 19 11:21:09 tbl-h10-4 kernel: [18949.188657] nfs: RPC call returned error 13 Jun 19 11:21:09 tbl-h10-4 kernel: [18949.188666] nfs: RPC call returned error 13 Jun 19 11:21:09 tbl-h10-4 kernel: [18949.188695] audit: type=1400 audit(1592590869.460:59): apparmor="DENIED" operation="sendmsg" profile="/snap/snapd/8140/usr/lib/snapd/snap-confine" pid=12884 comm="snap-confine" laddr=192.168.43.216 lport=766 faddr=192.168.43.4 fport=2049 family="inet" sock_type="stream" protocol=6 requested_mask="send" denied_mask="send" Jun 19 11:21:09 tbl-h10-4 kernel: [18949.188697] audit: type=1400 audit(1592590869.460:60): apparmor="DENIED" operation="sendmsg" profile="/snap/snapd/8140/usr/lib/snapd/snap-confine" pid=12884 comm="snap-confine" laddr=192.168.43.216 lport=766 faddr=192.168.43.4 fport=2049 family="inet" sock_type="stream" protocol=6 requested_mask="send" denied_mask="send" $ lsb_release -rd Description: Ubuntu 20.04 LTS $ apt policy chromium-browser chromium-browser: Installed: 81.0.4044.129-0ubuntu0.20.04.1 Candidate: 81.0.4044.129-0ubuntu0.20.04.1 Version table: *** 81.0.4044.129-0ubuntu0.20.04.1 500 500 http://ca.archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages 100 /var/lib/dpkg/status 80.0.3987.163-0ubuntu1 500 500 http://ca.archive.ubuntu.com/ubuntu focal/universe amd64 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1884299/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
