[Bug 1317993] Re: mountall: long, silent hangs on boot from 'find' while clearing tmpfs

[Steve Langasek]

Yes, it would be appropriate to have the mounted-tmp job display a
message via plymouth in this case.

** Changed in: mountall (Ubuntu)
   Importance: Undecided => Medium

** Changed in: mountall (Ubuntu)
       Status: New => Triaged

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Title:
  mountall: long, silent hangs on boot from 'find' while clearing tmpfs

Status in “mountall” package in Ubuntu:
  Triaged

Bug description:
  I thought my system was hanging at boot.  It turns out that a lot of
  stuff was left in /tmp from a benchmark that was running and then
  crashed.  I instrumented /etc/init/mounted-tmp.conf and found out that
  the 'find's to clear out /tmp were taking about 20 minutes to
  complete:

  [  125.732385] init: startpar-bridge (mountall-net--stopped) goal changed from start to stop
  [  125.732478] init: startpar-bridge (mountall-net--stopped) state changed from running to stopping
  [  125.732582] init: Handling stopping event
  [  125.732707] init: startpar-bridge (mountall-net--stopped) state changed from stopping to killed
  [  125.732779] init: startpar-bridge (mountall-net--stopped) state changed from killed to post-stop
  [  125.732839] init: startpar-bridge (mountall-net--stopped) state changed from post-stop to waiting
  [  125.733068] init: Handling stopped event
  [  126.076006] init: Connection from private client
  [  134.712191] init: Connection from private client
  [ 1269.704606] init: mounted-tmp main process (1210) exited normally
  [ 1269.704737] init: mounted-tmp goal changed from start to stop
  [ 1269.704879] init: mounted-tmp state changed from running to stopping
  [ 1269.704960] init: Handling stopping event
  ...

  That's a bit too long, and _really_ makes it look like the system has
  hung for 20 minutes.  Is there a chance we could get some messages
  spit out to the console somehow during this process?  Or, perhaps,
  time out after a certain amount of time and fall back to the tmpfs
  that happens later.

  I ran in to this on 13.10, but confirmed that the same code exists in
  the 14.04 and 14.10 bzr branches of mountall.

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