iscsitarget-dkms fails to build on 14.04

Status changed to 'Confirmed' because the bug affects multiple users.

is there any workaround until this is fixed?

if you replace all
"struct msghdr"
with
"struct user_msghdr"
it will compile, but it won't work ...

Unless you specifically need an HWE kernel (default with 14.04.3), you could downgrade to the 14.04.1 kernel and then it might work. See https://wiki.ubuntu.com/Kernel/LTSEnablementStack for an explanation of what's going on. We could do with instructions documented for this specific case, but I think we're lacking in this right now.

Could you try updating the HWE kernel. This should be fixed in 3.19.0-26* onwards.

i am running:
3.19.0-25-generic #26~14.04.1-Ubuntu

are you iscsi target is working with 3.19.0-26 ? can you give the source of your information?

Right you are runnint 3.19.0-25* not 3.19.0-26*. Cannot give you a link, but internal testing has this version as working:

iscsitarget, 1.4.20.3+svn502, 3.19.0-26-generic, x86_64: installed

I have the same build error on 3.19.0-28.

It's frustrating there is no workaround.

now i am using this now instead:

https://github.com/bvanassche/scst/archive/master.zip

download, make, install. it works great.

why ubunutu would release without working iscsitarget support is bejond me :-(

Unfortunately there are a lot of variations with HWE kernels, so I also got hit by not noticing there is the correct testing missing for 14.04 userspace/dkms with the 3.19 kernel. Sorry about that. Only good here is that iscsitarget is universe, so it is not part of the iso. Just that a fix needs to be done for the archive. Could someone give the two debs a go before I try to get the source uploaded?

Nice workaround Stefan. At least I can go on now.

root@file01:~# dpkg -i iscsitarget-dkms_1.4.20.3+svn499-0ubuntu2.1_all.deb
(Reading database ... 101359 files and directories currently installed.)
Preparing to unpack iscsitarget-dkms_1.4.20.3+svn499-0ubuntu2.1_all.deb ...

------------------------------
Deleting module version: 1.4.20.3+svn499
completely from the DKMS tree.
------------------------------
Done.
Unpacking iscsitarget-dkms (1.4.20.3+svn499-0ubuntu2.1) over (1.4.20.3+svn499-0ubuntu2) ...
Setting up iscsitarget-dkms (1.4.20.3+svn499-0ubuntu2.1) ...

Creating symlink /var/lib/dkms/iscsitarget/1.4.20.3+svn499/source ->
                 /usr/src/iscsitarget-1.4.20.3+svn499

DKMS: add completed.

Kernel preparation unnecessary for this kernel. Skipping...

Building module:
cleaning build area....
make KERNELRELEASE=3.19.0-28-generic -C /lib/modules/3.19.0-28-generic/build M=/var/lib/dkms/iscsitarget/1.4.20.3+svn499/build........
cleaning build area....

DKMS: build completed.

iscsi_trgt:
Running module version sanity check.
 - Original module
   - No original module exists within this kernel
 - Installation
   - Installing to /lib/modules/3.19.0-28-generic/updates/dkms/

depmod...............

DKMS: install completed.

This bug was fixed in the package iscsitarget - 1.4.20.3+svn502-2ubuntu2

---------------
iscsitarget (1.4.20.3+svn502-2ubuntu2) wily; urgency=low

  * Fix the compat-3.13.patch to not touch the top-level makefile. Will
    allow to backport this version into older (kernel 3.13 and older)
    releases (LP: #1483415).
  * Add a check for the DKMS kernel module to d/tests/daemon dep-8 test
    (LP: #1496057)

 -- Stefan Bader <email address hidden> Wed, 16 Sep 2015 13:28:21 +0200

Hello Axel, or anyone else affected,

Accepted iscsitarget into trusty-proposed. The package will build now and be available at https://launchpad.net/ubuntu/+source/iscsitarget/1.4.20.3+svn499-0ubuntu2.1 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 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 to verification-done. If it does not fix the bug for you, please add a comment stating that, and change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

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

I checked the ADT logs and the 1.4.20.3+svn499-0ubuntu2.1 package in trusty was successfully compiling for both 3.13 and 3.19 (plus positive feedback for the test package which was the same except the additional changes for testing).

This bug was fixed in the package iscsitarget - 1.4.20.3+svn499-0ubuntu2.1

---------------
iscsitarget (1.4.20.3+svn499-0ubuntu2.1) trusty; urgency=low

  * Backport compat changes to allow DKMS compiles for kernels up to 3.19
    (LP: #1483415).
    - d/p/fix-build-3.19: Modifies source to compile with 3.19
    - d/p/add-compat-3.19: Adds compat patches without enabling them
    - d/p/enable-compat-3.19: Enables compat patches in the DKMS config
  * Add a check for the DKMS kernel module to d/tests/daemon dep-8 test
    (LP: #1496057)

 -- Stefan Bader <email address hidden> Wed, 16 Sep 2015 13:29:48 +0200

The verification of the Stable Release Update for iscsitarget has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regressions.