[Bug 1320402] Re: mdadm resyncs imsm raid in "Normal" state

[Ivan]

My playing with /rc0.d/rc6.d was unsuccessful, script not executed at
all. After some learning it turned out that Ubuntu 16.04 lts does not
use scripts from init.d/rcN.d at all, now there is systemd services
uses. I tried to create a service but it always executes before umount
or just not executes. So I was forced to add to script an explicit
commands to stop known services which uses raid and unmount /mnt/raid
directly. It executes but again I do not know yet does it successful or
not, raid in resync state.

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Title:
   mdadm resyncs imsm raid in "Normal" state

Status in mdadm package in Ubuntu:
  Confirmed

Bug description:
  Got an imsm raid1 which I don't boot from. Whenever bios reports the
  raid as being in "Normal" state, mdadm starts a resync of it after
  boot. If a resync already is underway (bios reports it as being in
  "Verify" state), it continues where it left off.

  This appears to be very similar to a problem in Fedora:
  https://bugzilla.redhat.com/show_bug.cgi?id=753335 It's apparently
  fixed there for some time now. (The workaround mentioned in comment 41
  in that ticket doesn't work in Ubuntu, but I guess that's due to
  distro differences in initramfs and systemd.)

  Using mdadm 3.2.5-5ubuntu4 in a fresh Trusty install.

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