Public bug reported: snapd version: 2.16 on xenial (also saw with 2.15.2ubuntu1 before upgrading)
While trying to manually install the jenkins snap, I concurrently upgraded snapd with apt-get (although this could happen automatically if I had auto-upgrades enabled). The apt upgrade finished but the jenkins installed failed shortly after downloading the jenkins tarball (I've lost the error message). After this, all snap commands failed with: error: cannot list snaps: cannot communicate with server: Get http://localhost/v2/snaps: dial unix /run/snapd.socket: connect: connection refused The snapd service was stopped. Attempts to restart failed with the following logs in journalctl: Oct 03 07:07:24 blackened systemd[1]: Started Snappy daemon. Oct 03 07:07:24 blackened /usr/lib/snapd/snapd[18474]: patch.go:66: Patching system state from level 3 to 4 Oct 03 07:07:24 blackened snapd[18474]: 2016/10/03 07:07:24.695954 patch.go:66: Patching system state from level 3 to 4 Oct 03 07:07:24 blackened /usr/lib/snapd/snapd[18474]: patch.go:73: Cannnot patch: cannot get snap state for "jenkins": <nil> Oct 03 07:07:24 blackened snapd[18474]: 2016/10/03 07:07:24.705743 patch.go:73: Cannnot patch: cannot get snap state for "jenkins": <nil> Oct 03 07:07:24 blackened snapd[18474]: error: cannot patch system state from level 3 to 4: cannot get snap state for "jenkins": <nil> Oct 03 07:07:24 blackened systemd[1]: snapd.service: Main process exited, code=exited, status=1/FAILURE Oct 03 07:07:24 blackened systemd[1]: snapd.service: Unit entered failed state. Oct 03 07:07:24 blackened systemd[1]: snapd.service: Failed with result 'exit-code'. I discovered /var/lib/snapd/state.json had numerous changes and task entries for jenkins. After manually removing these with a json editor and updating the last-change-id and last-task-id pointers, snapd started again. I have the before and after files if they will help, ping me (fginther) in IRC. Oct 03 07:54:00 blackened systemd[1]: Starting Socket activation for snappy daemon. Oct 03 07:54:00 blackened systemd[1]: Listening on Socket activation for snappy daemon. Oct 03 07:54:00 blackened systemd[1]: Started Snappy daemon. Oct 03 07:54:00 blackened sudo[23948]: pam_unix(sudo:session): session closed for user root Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: patch.go:66: Patching system state from level 3 to 4 Oct 03 07:54:00 blackened snapd[23997]: 2016/10/03 07:54:00.743549 patch.go:66: Patching system state from level 3 to 4 Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding / Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/system-info Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/login Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/logout Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/icons/{name}/icon Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/find Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/snaps Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/snaps/{name} Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/snaps/{name}/conf Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/interfaces Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/assertions Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/assertions/{assertType} Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/events Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/changes/{id} Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/changes Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/create-user Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/buy Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/buy/ready Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/buy/methods Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:219: DEBUG: adding /v2/snapctl Oct 03 07:54:00 blackened /usr/lib/snapd/snapd[23997]: daemon.go:209: DEBUG: init done in 776.949µs ** Affects: snapd (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1629871 Title: upgrading snapd while concurrently installing a snap led to a busted state.json To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/snapd/+bug/1629871/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
