Snap removal hangs inside LXD container

[Alberto Donato]

When trying to remove a locally-installed snap I'm developing, I get the following error:

$ snap list
Name Version Rev Developer Notes
core 16-2 1689 canonical -
$ sudo snap install --dangerous basic-auth-service_0.1-git+bbae0ca_amd64.snap
basic-auth-service 0.1-git+bbae0ca installed
$ snap list
Name Version Rev Developer Notes
basic-auth-service 0.1-git+bbae0ca x1 -
core 16-2 1689 canonical -
$ sudo snap remove basic-auth-service
2017-05-19T10:45:47Z ERROR cannot remove snap file "basic-auth-service", will retry in 3 mins: [stop snap-basic\x2dauth\x2dservice-x1.mount] failed with exit status 1: Job for snap-basic\x2dauth\x2dservice-x1.mount failed. See "systemctl status "snap-basic\\x2dauth\\x2dservice-x1.mount"" and "journalctl -xe" for details.

[/] Remove snap "basic-auth-service" (x1) from the system

snap seemps to spin forever trying to remove it.
If I reboot the machine and manually kill the squashfuse instance for the snap, it eventually gets into the disabled,broken state and gets removed.

This happens in a xenial LXD container (under LXD 2.13), with the following snap version:

$ snap --version
snap 2.25
snapd 2.25
series 16
ubuntu 16.04
kernel 4.8.0-49-generic

The same snap installs/removes fine on a physical host

[Alberto Donato (ack)]

I still see this behavior with 2.27.5

Inside a newly created LXD container, I installed the hello-world snap.

When I try to remove it, I get the following:

$ sudo snap remove hello-world
2017-09-08T07:36:30Z ERROR cannot remove snap file "hello-world", will retry in 3 mins: [stop snap-hello\x2dworld-27.mount] failed with exit status 1: Job for snap-hello\x2dworld-27.mount failed. See "systemctl status "snap-hello\\x2dworld-27.mount"" and "journalctl -xe" for details.

[|] Remove snap "hello-world" (27) from the system

then snap is stuck trying to remove