[Bug 1858342] Re: mdcheck_start.service fails due to missing executable

[Peter Kieser]

Encountered this on two freshly installed Ubuntu 20.04 systems:

May 03 17:51:45 blackracer systemd[1]: Starting MD array scrubbing...
May 03 17:51:45 blackracer systemd[1394622]: mdcheck_start.service: Failed to execute command: No such file or directory
May 03 17:51:45 blackracer systemd[1394622]: mdcheck_start.service: Failed at step EXEC spawning /usr/share/mdadm/mdcheck: No such file or directory
May 03 17:51:45 blackracer systemd[1]: mdcheck_start.service: Main process exited, code=exited, status=203/EXEC
May 03 17:51:45 blackracer systemd[1]: mdcheck_start.service: Failed with result 'exit-code'.
May 03 17:51:45 blackracer systemd[1]: Failed to start MD array scrubbing.

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https://bugs.launchpad.net/bugs/1858342

Title:
  mdcheck_start.service fails due to missing executable

Status in mdadm package in Ubuntu:
  New

Bug description:
  In Eoan the mdadm crons were replaced by systemd timers, specifically
  the one that checks the array now doesn't work due to a missing
  executable.

  * Drop /etc/cron.d/mdadm and migrate to systemd mdcheck_start|continue
  timer units.

  /lib/systemd/system/mdcheck_start.service contains this line

  ExecStart=/usr/share/mdadm/mdcheck --duration $MDADM_CHECK_DURATION

  However /usr/share/mdadm/mdcheck isn't in the mdadm package. It looks
  like this file wasn't added from the upstream sources.

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