[Bug 1628279] Re: python utilities script suffix (.py) should be removed as per Policy 10.4

[Eric Desrochers]

@rlaager
@kirkland
@happyaron

The SRU are usally for "High-impact bugs"... but the current SRU for
Xenial might possibly fit in section :

2. When
2.2. Other safe cases

For Long Term Support releases we sometimes want to introduce new
features. They must not change the behaviour on existing installations
(e. g. entirely new packages are usually fine). If existing software
needs to be modified to make use of the new feature, it must be
demonstrated that these changes are unintrusive, have a minimal
regression potential, and have been tested properly. To avoid
regressions on upgrade, any such feature must then also be added to any
newer supported Ubuntu release. Once a new feature/package has been
introduced, subsequent changes to it are subject to the usual
requirements of SRUs to avoid regressions.


[1] - https://wiki.ubuntu.com/StableReleaseUpdates

Eric

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https://bugs.launchpad.net/bugs/1628279

Title:
  python utilities script suffix (.py) should be removed as per Policy
  10.4

Status in zfs-linux package in Ubuntu:
  Fix Committed

Bug description:
  [Impact]

  The zfs utilities scripts shipped with debian and ubuntu such as :

      * arc_summary.py : Provides a summary of the statistics
      * arcstat.py : Print out ZFS ARC Statistics exported via kstat(1)
      * dbufstat.py : Print out statistics for all cached dmu buffers

  should be renamed according to Policy 10.4 :
  https://www.debian.org/doc/debian-policy/ch-files.html#s-scripts

  "When scripts are installed into a directory in the system PATH, the
  script name should not include an extension such as .sh or .pl that
  denotes the scripting language currently used to implement it."

  
  Ideally, this should be fixed and upstreamed to Debian (or to zfslinux upstream) as well.

  [Test Case]

   * Install zfsutils-linux
   * List files

   $ dpkg -L zfsutils-linux | egrep "arc|dbufstat"
     /usr/sbin/arc_summary.py
     /usr/sbin/arcstat.py
     /usr/sbin/dbufstat.py

  [Regression Potential]

   * none expected, this is a trivial change that simply rename the
  scripts to remove the extension (.py) with a simple 'mv' before the
  dh_install invocation in order to get this expected result :

  $ dpkg -L zfsutils-linux | egrep -i "arc|dbuf"
    /usr/sbin/arc_summary
    /usr/sbin/arcstat
    /usr/sbin/dbufstat

  [Other Info]

   * Upstream (ZoL) is reluctant to change it at upstream code level.
  https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1628279/comments/2

   * This has been flag by Adam Conrad
  https://bugs.launchpad.net/ubuntu/+source/zfs-linux/+bug/1574342/comments/19

   * Debian policy
  https://www.debian.org/doc/debian-policy/ch-files.html#s-scripts

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