** Description changed: + [Impact] fstrim weekly cronjob output in an unprivileged LXD container: /etc/cron.weekly/fstrim: fstrim: cannot open /dev/.lxd-mounts: Permission denied fstrim: /dev/fuse: not a directory fstrim: /dev/lxd: FITRIM ioctl failed: Operation not permitted There is a github issue: https://github.com/lxc/lxd/issues/2030 The outcome is that it's purely an fstrim misbehaviour, it could be smarter. Stephane Graber comment: As all of this is handled by the kernel, there isn't anything we can do about it in LXD. I think fstrim should be made slightly more clever: * Don't run on bind-mounts (you can detect bind-mounts by parsing /proc/self/mountinfo instead of /proc/mounts) * Maybe not be as noisy on expected errors like EACCES, EPERM and ENOENT, only log actual failures which would likely be EINVAL or memory related errors. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: util-linux 2.27.1-6ubuntu3 ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6 Uname: Linux 4.4.0-21-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 Date: Sun Jun 5 19:49:04 2016 ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: util-linux UpgradeStatus: No upgrade log present (probably fresh install) + + [Test Case] + * Ubuntu lxd container + * Wait for the scheduled fstrim run (X: cronjob, B and late: systemd timer) + * fstrim will run and report errors "Operation not permitted" "Permission denied", ... + + Container shouldn't run fstrim, it should only be run at host level. + + [Potential Regression] + + None, the change will only block fstrim to be automatically run at + scheduled time. + + Xenial uses the cronjob approach /etc/cron.weekly/fstrim + Bionic and late switched to a systemd timer. + + 2 differents fixes (one for X, and one for B and late) will be needed, + but they'll do same thing, which prevent fstrim to automatically run if + inside a container both fixes using systemd-virt-detect. + + + [Other Informations] + + * The systemd timer change upstream PR: + https://github.com/karelzak/util-linux/pull/841
** Tags added: sts -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1589289 Title: fstrim: cannot open /dev/.lxd-mounts: Permission denied To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/util-linux/+bug/1589289/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
