yeah I think I found the issue in your log. Consider [1] again and look at /lib/systemd/system/blk-availability.service
This is what calls blkdeactivate on shutdown. It only has a WantedBy=sysinit.target But no ordering Before anything. It even has DefaultDependencies=no which will make it start early only waiting for the listed After=lvm2-activation.service lvm2-lvmetad.service iscsi-shutdown.service iscsi.service iscsid.service fcoe.service But in reverse that also means it has to wait on NOTHING to start "stopping" which is the call to blkdeactivate. IMHO that is a bug in lvm2, that should ensure that this probably should be ordered somewhere: - closely after local-fs.target (on shutdown); I mean FS should be gone before deactivating devices right? - the startup ordering isn't important as it is calling just /bin/true My (uneducated) suggestion would be to add Before=local-fs.target to /lib/systemd/system/blk-availability.service Then run $ systemctl daemon-reload (maybe needs another reboot then, not sure). >From there I'd assume that the shutdown ordering (beig the inverse) would >order it AFTER local-fs which IMHO is what we'd want. Please give this a try and I'll add an LVM task here. [1]: https://www.freedesktop.org/software/systemd/man/bootup.html ** Also affects: lvm2 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lvm2 in Ubuntu. https://bugs.launchpad.net/bugs/1832859 Title: during shutdown libvirt-guests gets stopped after file system unmount Status in libvirt package in Ubuntu: Incomplete Status in lvm2 package in Ubuntu: New Bug description: When using automatic suspend at reboot/shutdown, it makes sense to store the suspend data on a separate partition to ensure there is always enough available space. However this does not work, as the partition gets unmounted before or during libvirt suspend. Steps to reproduce: 1. Use Ubuntu 18.04.02 LTS 2. Install libvirt + qemu-kvm 3. Start a guest 4. Set libvirt-guests to suspend at shutdown/reboot by editing /etc/default/libvirt-guests 5. Create a fstab entry to mount a separate partition to mount point /var/lib/libvirt/qemu/save. Then run sudo mount /var/lib/libvirt/qemu/save to mount the partition. 6. Reboot Expected result: The guest suspend data would be written to the /var/lib/libvirt/qemu/save, resulting in the data being stored at the partition specified in fstab. At boot, this partition would be mounted as specified in fstab and libvirt-guest would be able to read the data and restore the guests. Actual result: The partition gets unmounted before libvirt-guests suspends the guests, resulting in the data being stored on the partition containing the root file system. During boot, the empty partition gets mounted over the non-empty /var/lib/libvirt/qemu/save directory, resulting in libvirt-guests being unable to read the saved data. As a side effect, the saved data is using up space on the root partition even if the directory appears empty. Here is some of the relevant lines from the journal: Jun 14 00:00:04 libvirt-host blkdeactivate[4343]: Deactivating block devices: Jun 14 00:00:04 libvirt-host systemd[1]: Unmounted /var/lib/libvirt/qemu/save. Jun 14 00:00:04 libvirt-host blkdeactivate[4343]: [UMOUNT]: unmounting libvirt_lvm-suspenddata (dm-3) mounted on /var/lib/libvirt/qemu/save... done Jun 14 00:00:04 libvirt-host libvirt-guests.sh[4349]: Running guests on default URI: vps1, vps2, vps3 Jun 14 00:00:04 libvirt-host blkdeactivate[4343]: [MD]: deactivating raid1 device md1... done Jun 14 00:00:05 libvirt-host libvirt-guests.sh[4349]: Suspending guests on default URI... Jun 14 00:00:05 libvirt-host libvirt-guests.sh[4349]: Suspending vps1: ... Jun 14 00:00:05 libvirt-host blkdeactivate[4343]: [LVM]: deactivating Volume Group libvirt_lvm... skipping Jun 14 00:00:10 libvirt-host libvirt-guests.sh[4349]: Suspending vps1: 5.989 GiB Jun 14 00:00:15 libvirt-host libvirt-guests.sh[4349]: Suspending vps1: ... Jun 14 00:00:20 libvirt-host libvirt-guests.sh[4349]: Suspending vps1: ... To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1832859/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
