[Bug 843306] Re: df ignores fs type none in options

[Bryce Harrington]

Modern df lists the actual fs types for those 'none' devices.  E.g.
udev, tmpfs, et al.   I'm guessing the reason that '-x none' was not
excluding them in this old df version was because the type wasn't
literally 'none' but perhaps \0 or else was just not being displayed.

In any case, I no longer am reproducing this very old bug, so am closing
it out as fixed.

** Changed in: coreutils (Ubuntu)
       Status: New => Fix Released

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Title:
  df ignores fs type none in options

Status in coreutils package in Ubuntu:
  Fix Released

Bug description:
  df appears to ignore the filesystem type "none" when specifying
  options on the command line. Some example output:

  gecko at magina ~> df
  Filesystem           1K-blocks      Used Available Use% Mounted on
  /dev/sda2             16018264   5669900   9534672  38% /
  none                   2020908       652   2020256   1% /dev
  none                   2028632        68   2028564   1% /dev/shm
  none                   2028632       440   2028192   1% /var/run
  none                   2028632         0   2028632   0% /var/lock
  /dev/sdb6            457072296  42896024 390958336  10% /home
  [four different "none" systems]

  gecko at magina ~> df -x none
  Filesystem           1K-blocks      Used Available Use% Mounted on
  /dev/sda2             16018264   5669900   9534672  38% /
  none                   2020908       652   2020256   1% /dev
  none                   2028632        68   2028564   1% /dev/shm
  none                   2028632       440   2028192   1% /var/run
  none                   2028632         0   2028632   0% /var/lock
  /dev/sdb6            457072296  42896032 390958328  10% /home
  [would expect "none" systems not to appear]

  gecko at magina ~> df -t none
  df: no file systems processed
  [would expect only "none" systems to appear]

  
  I have no idea on whether this behaviour is intentional, however I do know that it causes a minor bug to appear in the munin package - the df plugin is unable to ignore a bunch of filesystems even though it is configured to do so by default.

  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: coreutils 8.5-1ubuntu6
  ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
  Uname: Linux 2.6.38-10-generic x86_64
  Architecture: amd64
  Date: Tue Sep  6 23:48:25 2011
  EcryptfsInUse: Yes
  InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429)
  ProcEnviron:
   LANGUAGE=en_GB:en
   PATH=(custom, user)
   LANG=en_GB.UTF-8
   SHELL=/usr/bin/fish
  SourcePackage: coreutils
  UpgradeStatus: Upgraded to natty on 2011-08-04 (33 days ago)

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