guest-image-tools: There are no ccwgroup devices on Ubuntu16

[Andreas Scheuring]

Ubuntu 16: It seems like that sometimes the autoconfigure_neworking.service starts too early. This results in the following errors in the log (and the devices not being configured):

# journalctl | grep autoconfigure
Feb 21 08:14:19 andreas-cloudinit.boeblingen.de.ibm.com autoconfigure_networking.sh[828]: autoconfigure_networking.sh: Start
Feb 21 08:14:19 andreas-cloudinit.boeblingen.de.ibm.com autoconfigure_networking.sh[828]: autoconfigure_networking.sh: Configuring dev_bus_id 0.0.0004.
Feb 21 08:14:19 andreas-cloudinit.boeblingen.de.ibm.com autoconfigure_networking.sh[828]: autoconfigure_networking.sh: Port 0 used for dev_bus_id 0.0.0004.
Feb 21 08:14:19 andreas-cloudinit.boeblingen.de.ibm.com autoconfigure_networking.sh[828]: znetconf: Error: There are no ccwgroup devices
Feb 21 08:14:19 andreas-cloudinit.boeblingen.de.ibm.com autoconfigure_networking.sh[828]: autoconfigure_networking.sh: Configuring dev_bus_id 0.0.0007.
Feb 21 08:14:19 andreas-cloudinit.boeblingen.de.ibm.com autoconfigure_networking.sh[828]: autoconfigure_networking.sh: Port 1 used for dev_bus_id 0.0.0007.
Feb 21 08:14:19 andreas-cloudinit.boeblingen.de.ibm.com autoconfigure_networking.sh[828]: znetconf: Error: There are no ccwgroup devices
Feb 21 08:14:19 andreas-cloudinit.boeblingen.de.ibm.com autoconfigure_networking.sh[828]: autoconfigure_networking.sh: Finished with rc '1'
Feb 21 08:14:19 andreas-cloudinit.boeblingen.de.ibm.com systemd[1]: autoconfigure_networking.service: Main process exited, code=exited, status=1/FAILURE
Feb 21 08:14:19 andreas-cloudinit.boeblingen.de.ibm.com systemd[1]: autoconfigure_networking.service: Unit entered failed state.
Feb 21 08:14:19 andreas-cloudinit.boeblingen.de.ibm.com systemd[1]: autoconfigure_networking.service: Failed with result 'exit-code'.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/437840

[Andreas Scheuring (andreas-scheuring)]

After that the following error might show up:

autoconfigure_networking.sh[1136]: Scanning for network devices...
autoconfigure_networking.sh[1136]: /lib/s390-tools/lsznet.raw: line 187: cannot create temp file for here-document: Permission denied
autoconfigure_networking.sh[1136]: lsznet.raw: ERROR: sysfs reported 0 CHPIDs instead of expected 8
autoconfigure_networking.sh[1136]: /sbin/znetconf: line 1302: cannot create temp file for here-document: Read-only file system
autoconfigure_networking.sh[1136]: znetconf: Error: No configuration found for device ID 0.0.0004

-> the service starts way too early

[Andreas Scheuring (andreas-scheuring)]

Created a separate bug for the other issue described in #2: https://bugs.launchpad.net/nova-dpm/+bug/1670349

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/437840
Committed: https://git.openstack.org/cgit/openstack/nova-dpm/commit/?id=3c02543ea8b629bf12504354c312abcd2f036c9f
Submitter: Jenkins
Branch: master

commit 3c02543ea8b629bf12504354c312abcd2f036c9f
Author: Andreas Scheuring <email address hidden>
Date: Fri Feb 24 09:40:32 2017 +0100

    guest-tools: Fix "There are no ccwgroup devices"

    The error occures if the directory '/sys/bus/ccwgroup/' does not
    exist (znetconf is checking for that). This directory gets created
    when the 'ccwgroup' kernel module is initialized. Therefore the
    solution is to ensure that this kernel module is loaded.

    Change-Id: Ifc8917b702f7a8913c5662fcbb9f15c1248ed55d
    Closes-Bug: #1666524