I have some evidences that potentially we have even more serious trouble with ZFS on Ubuntu Noble 6.8 kernel.
Some time ago LXD team has got a report about LXCFS processes crashes: https://github.com/lxc/lxcfs/issues/644 After spending really a lot of time checking everything from our side (in LXCFS) I started to have a feeling that problem can be with the kernel (memory corruption). Issue reported was using all standard Ubuntu Noble packages - ZFS from Noble and kernel from Noble. Also LXD v5.21.1 LTS snap. I've instructed him to try an upstream version of ZFS module with the same kernel (no luck there). Then, I've instructed user to try an recent upstream Linux kernel version (same, no luck). Then user downgraded to 6.6.x series kernel + upstream recent ZFS. And LXCFS stopped crashing and everything works just fine for him. And that's without any changes on the LXD snap side (LXCFS, LXC, LXD - all the same!) Now we have another report: https://github.com/canonical/lxd/issues/14178 I decided to share this information in this issue instead of filling a new one so we can collect all the problems with ZFS on a new kernels in one place. To conclude: all points that we have a bug in ZFS which leads to a kernel/userspace memory corruption... ** Bug watch added: LXCFS bug tracker #644 https://github.com/lxc/lxcfs/issues/644 ** Bug watch added: github.com/canonical/lxd/issues #14178 https://github.com/canonical/lxd/issues/14178 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to zfs-linux in Ubuntu. https://bugs.launchpad.net/bugs/2077926 Title: crash in openzfs - 2.2.2 not supported on 6.8 Status in zfs-linux package in Ubuntu: Confirmed Bug description: Crash report on openzfs: https://github.com/openzfs/zfs/issues/16482 > You should probably report this to Ubuntu or try it on 2.2.5 vanilla, 2.2.2 doesn't claim to work on 6.8 Distribution Version 24.04 Kernel Version 6.8.0-41-generic Architecture intel x86-64 OpenZFS Version zfs-2.2.2-0ubuntu9, zfs-kmod-2.2.2-0ubuntu9 ProblemType: Bug DistroRelease: Ubuntu 24.04 Package: zfsutils-linux 2.2.2-0ubuntu9 ProcVersionSignature: Ubuntu 6.8.0-41.41-generic 6.8.12 Uname: Linux 6.8.0-41-generic x86_64 NonfreeKernelModules: zfs ApportVersion: 2.28.1-0ubuntu3.1 Architecture: amd64 CasperMD5CheckResult: pass Date: Mon Aug 26 21:30:11 2024 InstallationDate: Installed on 2024-08-16 (11 days ago) InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424) ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> SourcePackage: zfs-linux UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.sudoers.d.zfs: [inaccessible: [Errno 13] Permission denied: '/etc/sudoers.d/zfs'] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/2077926/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
