[Canonical-ubuntu-qa] [Bug 1989603] Re: Can't purge snapd in LXD: rm: cannot remove '/var/snap/lxd/common/var/lib/lxcfs/...': Function not implemented

This is still reproducible at least on Focal and Jammy. The link to the (not really) Fix Released upstream bug is dead. ** Changed in: snapd (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Canonical's Ubuntu QA, which is subscribed to

[Canonical-ubuntu-qa] [Bug 1989603] Re: Can't purge snapd in LXD: rm: cannot remove '/var/snap/lxd/common/var/lib/lxcfs/...': Function not implemented

** Merge proposal linked: https://code.launchpad.net/~paride/autopkgtest/+git/autopkgtest/+merge/434809 -- You received this bug notification because you are a member of Canonical's Ubuntu QA, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1989603 Title: Can't purge

[Canonical-ubuntu-qa] [Bug 1989603] Re: Can't purge snapd in LXD: rm: cannot remove '/var/snap/lxd/common/var/lib/lxcfs/...': Function not implemented

** Changed in: lxd Status: Unknown => Fix Released -- You received this bug notification because you are a member of Canonical's Ubuntu QA, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1989603 Title: Can't purge snapd in LXD: rm: cannot remove

[Canonical-ubuntu-qa] [Bug 1989603] Re: Can't purge snapd in LXD: rm: cannot remove '/var/snap/lxd/common/var/lib/lxcfs/...': Function not implemented

** No longer affects: lxd (Ubuntu) -- You received this bug notification because you are a member of Canonical's Ubuntu QA, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1989603 Title: Can't purge snapd in LXD: rm: cannot remove

[Canonical-ubuntu-qa] [Bug 1989603] Re: Can't purge snapd in LXD: rm: cannot remove '/var/snap/lxd/common/var/lib/lxcfs/...': Function not implemented

This was retriaged by LXD tream as a snapd bug, see: https://github.com/lxc/lxd-pkg-snap/issues/106 and in particular https://github.com/lxc/lxd-pkg-snap/issues/106#issuecomment-1252549005 ** Also affects: snapd (Ubuntu) Importance: Undecided Status: New ** Bug watch added:

[Canonical-ubuntu-qa] [Bug 1989603] Re: Can't purge snapd in LXD: rm: cannot remove '/var/snap/lxd/common/var/lib/lxcfs/...': Function not implemented

** Merge proposal linked: https://code.launchpad.net/~paride/autopkgtest/+git/autopkgtest/+merge/429901 -- You received this bug notification because you are a member of Canonical's Ubuntu QA, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1989603 Title: Can't purge

[Canonical-ubuntu-qa] [Bug 1989603] Re: Can't purge snapd in LXD: rm: cannot remove '/var/snap/lxd/common/var/lib/lxcfs/...': Function not implemented

** Also affects: lxd Importance: Undecided Status: New -- You received this bug notification because you are a member of Canonical's Ubuntu QA, which is subscribed to the bug report. https://bugs.launchpad.net/bugs/1989603 Title: Can't purge snapd in LXD: rm: cannot remove

[Canonical-ubuntu-qa] [Bug 1989603] Re: Can't purge snapd in LXD: rm: cannot remove '/var/snap/lxd/common/var/lib/lxcfs/...': Function not implemented

I tried purging lxd (snap remove --purge lxd) and it worked just fine, and after that an `apt purge snapd` also worked, so perhaps the umount of .../lxcfs/{proc,sys} is racy? Uninstalling and reinstalling lxd also works: - [jump into *fresh* kinetic lxd container] - snap remove lxd - snap

[Canonical-ubuntu-qa] [Bug 1989603] Re: Can't purge snapd in LXD: rm: cannot remove '/var/snap/lxd/common/var/lib/lxcfs/...': Function not implemented

It looks like the LXD snap has mounted "proc" and "sys" over /var/snap/lxd/common/var/lib/lxcfs/{proc,sys}/ but it's not unmounting them. In the "remove" hook, the LXD snap should unmount any mounted filesystems; not doing so can have disastrous effects if there are also user partitions mounted