adding kernel parameter lvmwait=2 also works around this issue (source of idea http://serverfault.com/questions/567579/boot-failure-with-root-on-md-raid1-lvm-udev-event-timing)
-- 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/1351528 Title: boot fails on degraded raid (mdraid) due to LVM root (combined / + /boot) missing device tables at mount time Status in “lvm2” package in Ubuntu: New Bug description: Trusty installation is combined root + /boot within LVM on top of mdraid (type 1.x) RAID1 with one missing disk (degraded). [method: basically create the setup in shell first then point install at the lvm. at end of install create a chroot and add mdadm pkg] boot fails with the following messages: Incrementally starting RAID arrays... mdadm: CREATE user root not found mdadm: CREATE group disk not found Incrementally starting RAID arrays... and slowly repeats the above at this point. workaround: - add break=premount to grub kernel line entry - for continue visibility of boot output also remove quiet, splash and possibly set gxmode 640x480 now @ initramfs prompt: mdadm --detail /dev/md0 should indicate a state of clean, degraded, array is started so this part is ok lvm lvs output attributes are as follows: -wi-d---- (instead of the expected -wi-a----) lvs manpage this means device tables are missing (device mapper?) FIX: simply run lvm vgchange -ay and exit initramsfs. This will lead to a booting system. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/1351528/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
