[Bug 1540803] Re: systemd doesn't respect /etc/fstab for internal mounts

[Martin Pitt]

As explained above, /run is mounted by initramfs-tools, thus changing
the package.

** Package changed: systemd (Ubuntu) => initramfs-tools (Ubuntu)

** Summary changed:

- systemd doesn't respect /etc/fstab for internal mounts
+ check /etc/fstab for custom /run mount options

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https://bugs.launchpad.net/bugs/1540803

Title:
  check /etc/fstab for custom /run mount options

Status in initramfs-tools package in Ubuntu:
  Triaged

Bug description:
  Under upstart, I can have the following line in my /etc/fstab:
      tmpfs /run tmpfs defaults,size=10M 0 0 

  At mount time, mountall will use /etc/fstab as an override for the
  internal fstab (/lib/init/fstab) and so I end up with /run mounted
  with a 10MB limit.

  Under systemd, the exact same fstab appears to be ignored and I end up
  with a /run that has a limit of half my memory.

  This may very well surprise users upgrading production environments
  from 14.04 to 16.04 or users that have to follow some strict
  partitioning and mount configuration policies (we've seen a couple of
  those by now) so it'd be good to have this resolved.

  
  I did testing with /run in LXD containers on 14.04 (upstart) and 16.04 (systemd).

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