[Bug 1121874] Re: MySQL launch fails silently if < 4MB of disk space is available

[Robie Basak]

12:55 #ubuntu-devel: <stokachu> rbasak: building and testing the mysql upgrade 
                                now should hopefully be ready in the next hour
16:41 #ubuntu-devel: <stokachu> rbasak: i attempted to build mysql but it 
                                continually fails on a few unittests

@Adam,

What's the current status of these patches, please? Are these ready now,
or are there known problems? If ready, please could you detail what
testing you've performed so that we can try and avoid a second -proposed
regression? Thanks!

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Title:
  MySQL launch fails silently if < 4MB of disk space is available

Status in “mysql-5.5” package in Ubuntu:
  Triaged
Status in “mysql-5.5” source package in Precise:
  Fix Committed
Status in “mysql-5.5” source package in Quantal:
  Fix Committed
Status in “mysql-5.5” source package in Raring:
  Fix Committed

Bug description:
  [Impact]
  MySQL will not launch if less than 4MB of disk space is available:

  /etc/init/mysql.conf:
  LC_ALL=C BLOCKSIZE= df --portability /var/lib/mysql/. | tail -n 1 | awk '{ exit ($4<4096) }'

  This behaviour is OK, but it should not stop silently but report an
  error message so that the admin knows why it did not start.

  [Test Case]
  1) Prep system to have 4MB disk space
  2) Attempt to start mysql server
  3) Silent fail with upstart

  [Regression Potentional]
  This fix is in sysv script but was never carried over to upstart. Regression minimal as no code changes were made.

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