[Bug 1635049] Re: Boot fails with degraded mdadm raid

[chrone]

Will there be any backport patch for Ubuntu 16.04.2?

Just tested this out yesterday and Ubuntu 16.04.2 with latest update
still could not boot secondary drive.

My test was done on Linux mdadm RAID1 with LVM. (/dev/md0 for /boot xfs,
and /dev/md1 for LVM with /root xfs and swap).

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https://bugs.launchpad.net/bugs/1635049

Title:
  Boot fails with degraded mdadm raid

Status in mdadm package in Ubuntu:
  Triaged
Status in mdadm source package in Xenial:
  Triaged
Status in mdadm package in Debian:
  Fix Released

Bug description:
  mdadm does not attempt to start partial md devices (incremental
  assembly) during initramfs and can cause system to fail to initramfs
  prompt if rootfs on md.

  
  http://askubuntu.com/questions/789953/how-to-enable-degraded-raid1-boot-in-16-04lts

  Fixed in debian mdadm 3.4-2: https://bugs.debian.org/cgi-
  bin/bugreport.cgi?bug=784070

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