@apw To answer your question: "Also as you are changing MNTTAB is there any reason not to be using that here?"
The "reading" is redirected to /proc/self/mounts and the "writing" to /etc/mtab, but if it doesn't exist, that's fine. ZFS just won't update /etc/mtab. Ideally, ZFS should be integrated with libmount in a second phase (ZoL maintainers are aware that eventually a 2nd is needed to integrate libmount), until then /proc/self/mounts is a viable solution to address issues cause by mtab. Eric -- 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/1607920 Title: zfs services fail on firstboot if zfs-utils is integrated into the deployment image Status in sysvinit package in Ubuntu: Won't Fix Status in zfs-linux package in Ubuntu: Fix Released Status in sysvinit source package in Xenial: Won't Fix Status in zfs-linux source package in Xenial: In Progress Bug description: [Impact] * zfs services fail on firstboot if zfs-utils is integrated into the deployment image. * Output from systemd - sudo systemctl --failed UNIT LOAD ACTIVE SUB DESCRIPTION ● zfs-import-scan.service loaded failed failed Import ZFS pools by device scanning ● zfs-mount.service loaded failed failed Mount ZFS filesystems * This is particularly frustrating for users who use automated monitoring as it means virtual machines must always be restarted before showing as clean. * This failure is due to zfs services starting up before /etc/mtab has a chance to be symlinked to /proc/mounts. [Test Case] 1. Grab a stock xenial image, and unpack it and add zfs-utils to it. Repack it. 2. Boot machine 3. Check systemctl --failed. [Regression Potential] * none expected, patch has been intensively tested by the upsteam zfs test script suite. * This is a upstream commit merge in 0.7.0. * A ubuntu package has been tested (including the upstream commit) by a user of the community facing this bug, and confirmed it addresses the problem (see comment #7). [Other Info] * The "reading" is redirected to /proc/self/mounts. The writing to /etc/mtab. Some distros still need that. The current hope is to replace the writing (and maybe reading) with libmount, in a second phase. * Upstream commit : https://github.com/zfsonlinux/zfs/commit/792517389fad5c495a2738b61c2e9c65dedaaa9a * Upstream bug: https://github.com/zfsonlinux/zfs/issues/4680 * Debian bug : https://bugs.debian.org/cgi- bin/bugreport.cgi?bug=839071 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sysvinit/+bug/1607920/+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
