[Bug 1821261] Please test proposed package

[Brian Murray]

Hello Matthew, or anyone else affected,

Accepted nfs-utils into cosmic-proposed. The package will build now and
be available at https://launchpad.net/ubuntu/+source/nfs-
utils/1:1.3.4-2.2ubuntu3.1 in a few hours, and then in the -proposed
repository.

Please help us by testing this new package.  See
https://wiki.ubuntu.com/Testing/EnableProposed for documentation on how
to enable and use -proposed.  Your feedback will aid us getting this
update out to other Ubuntu users.

If this package fixes the bug for you, please add a comment to this bug,
mentioning the version of the package you tested and change the tag from
verification-needed-cosmic to verification-done-cosmic. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-cosmic. In either case, without details of
your testing we will not be able to proceed.

Further information regarding the verification process can be found at
https://wiki.ubuntu.com/QATeam/PerformingSRUVerification .  Thank you in
advance for helping!

N.B. The updated package will be released to -updates after the bug(s)
fixed by this package have been verified and the package has been in
-proposed for a minimum of 7 days.

** Changed in: nfs-utils (Ubuntu Bionic)
       Status: In Progress => Fix Committed

** Tags added: verification-needed-bionic

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https://bugs.launchpad.net/bugs/1821261

Title:
  nfsiostat broken and exits with traceback

Status in nfs-utils package in Ubuntu:
  Fix Released
Status in nfs-utils source package in Bionic:
  Fix Committed
Status in nfs-utils source package in Cosmic:
  Fix Committed
Status in nfs-utils source package in Disco:
  Fix Released

Bug description:
  [Impact]

   * nfsiostat, in nfs-common-1.3.4-2, is broken in bionic, cosmic and
  disco.

   * nfsiostat will not run at all, and is unusuable when users run the
  command. Users should be able to run the command and see output of
  their nfs mounts.

   * The bug is caused by the 'list' reserved word being used as a
  variable name in list_nfs_mounts(), and is explained here:
  https://askubuntu.com/questions/1123319/nfsiostat-failing-
  on-18-04/1123336#1123336?s=a1e9150fbf284e849efe6fe084e7c7b8

  [Test Case]

  * When you run the command nfsiostat, either as root or a regular
  user, the following traceback is printed:

  $ nfsiostat
  Traceback (most recent call last):
    File "/usr/sbin/nfsiostat", line 640, in <module>
      iostat_command(prog)
    File "/usr/sbin/nfsiostat", line 593, in iostat_command
      devices = list_nfs_mounts(origdevices, mountstats)
    File "/usr/sbin/nfsiostat", line 495, in list_nfs_mounts
      for device, descr in list(mountstats.items()):
  TypeError: 'list' object is not callable

  * Instead, the correct behaviour is not crash, and do something like
  the following on a system with no current nfs mounts:

  $ nfsiostat
  No NFS mount points were found

  [Regression Potential]

   * There is only one file modified, which is the nfsiostat python
  script. There is no other changes to any other executable in the
  package. Since nfsiostat was in complete failure before, the fix makes
  it work again, there should not be any cause for concern regarding
  regressions.

   * In the event of a regression, worst case scenario is that users are
  impacted in getting the status of their nfs mounts, while still being
  able to freely mount and use such devices, since they are handled by
  other packages.

   * I have built and tested all versions of packages in a ppa, which you can find here:
   https://launchpad.net/~mruffell/+archive/ubuntu/nfs-utils-testing

  [Other Info]

   * The impacted code is present in xenial and trusty, since it was
  merged into upstream in 2009. However, due to how the function works,
  the program executes fine and does not crash.

  * Upstream commit:
  http://git.linux-nfs.org/?p=steved/nfs-utils.git;a=commitdiff;h=c4c14011b70375050d7bba7c57e2eaf4c715dc7c

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