[Bug 1777600] Re: chzdev can't find modprobe

[Brian Murray]

Hello bugproxy, or anyone else affected,

Accepted s390-tools into xenial-proposed. The package will build now and
be available at
https://launchpad.net/ubuntu/+source/s390-tools/1.34.0-0ubuntu8.8 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-xenial to verification-done-xenial. If it does not
fix the bug for you, please add a comment stating that, and change the
tag to verification-failed-xenial. 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: s390-tools (Ubuntu Xenial)
       Status: In Progress => Fix Committed

** Tags added: verification-needed verification-needed-xenial

** Changed in: s390-tools (Ubuntu Bionic)
       Status: In Progress => Fix Committed

** Tags added: verification-needed-bionic

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https://bugs.launchpad.net/bugs/1777600

Title:
  chzdev can't find modprobe

Status in Ubuntu on IBM z Systems:
  In Progress
Status in linux package in Ubuntu:
  Invalid
Status in s390-tools package in Ubuntu:
  Fix Released
Status in s390-tools source package in Xenial:
  Fix Committed
Status in s390-tools source package in Bionic:
  Fix Committed
Status in s390-tools source package in Cosmic:
  Fix Released

Bug description:
  [Impact]

   * chzdev fails to load additional kernel modules at runtime,
  resulting in failure to activate devices.

  [Test Case]

   $ chzdev zfcp --type datarouter=0 dbflevel=5

  Should succeed, instead of erroring out / not able to find modprobe.

  [Regression Potential]

   * This corrects compiled-in path to /sbin/modprobe, thus making
  available previously a broken codepath of chzdev.

  [Other Info]
   
   * Original bug report

  Description:  only when trying to change some attributes chzdev fails
  because it cant find modprobe under Ubuntu 18.04

                root at m83lp09:~# chzdev zfcp --type datarouter=0 dbflevel=5
                sh: 1: /usr/sbin/modprobe: not found
                zfcp device type configure failed
                    Error: Command failed (exit code 127): /usr/sbin/modprobe -r zfcp

                root at m83lp09:~# whereis modprobe
                modprobe: /sbin/modprobe /etc/modprobe.d /lib/modprobe.d /usr/share/man/man8/modprobe.8.gz

  Potential solution ? : adding a symlink is a workaround, is this path
  hardcoded?

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