[Bug 1755858] Re: iscsid autostarts on all servers when it has nothing to do

[ Christian Ehrhardt ]

The hit in "testsuite" is more complex, as it does not reproduce for me.
>From the log:
======================================================================
ERROR: test_tgt_boot (__main__.CloudImageTest)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/autopkgtest.BEvlMr/build.15A/src/debian/tests/test-open-iscsi.py", line 274, in test_tgt_boot
    subprocess.check_call(cmd)
  File "/usr/lib/python2.7/subprocess.py", line 190, in check_call
    raise CalledProcessError(retcode, cmd)
CalledProcessError: Command '['/tmp/autopkgtest.BEvlMr/build.15A/src/debian/tests/tgt-boot-test', '-v', '--netdev=user,net=10.1.1.0/24,host=10.1.1.2,dns=10.1.1.4,dnssearch=example.com', '--disk=/tmp/tmpin5Hu3/output-disk.img,serial=output-disk', '--user-data-add=/tmp/tmpin5Hu3/user-data', '/tmp/autopkgtest.BEvlMr/build.15A/src/debian/tests/cosmic.d/disk.img', '/tmp/autopkgtest.BEvlMr/build.15A/src/debian/tests/cosmic.d/kernel', '/tmp/autopkgtest.BEvlMr/build.15A/src/debian/tests/cosmic.d/initrd']' returned non-zero exit status 124

This more seems than it might have timed out, also this is not only not reproducible (locally) but also only affecting x86_64.
I'll have to wait for the LP Infra rerun on Bileto on this.

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https://bugs.launchpad.net/bugs/1755858

Title:
  iscsid autostarts on all servers when it has nothing to do

Status in open-iscsi package in Ubuntu:
  Fix Committed
Status in open-iscsi source package in Bionic:
  Triaged
Status in open-iscsi package in Debian:
  New

Bug description:
  In bionic, the open-iscsi systemd unit has the following guards to
  keep it from running on systems with no iscsi targets configured:

  # Must have some pre-defined targets to login to
  ConditionDirectoryNotEmpty=|/etc/iscsi/nodes
  # or have a session to use via iscsid
  ConditionDirectoryNotEmpty=|/sys/class/iscsi_session

  However, iscsid starts from a separate unit and does not include this
  check.  Thus, iscsid starts on every Ubuntu Server install, whether or
  not it has anything to do.

  We should replicate these unit conditionals to the iscsid unit, to
  ensure the daemon doesn't run (consuming memory, and slowing boot)
  when not needed.

  Related bugs:
   * bug 1630946: ubuntu-server depends on open-iscsi and runs iscsid

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