open-iscsi init script creates dependency cycle with NetworkManager

Jun 15 09:46:54 djledkov-mobl1 systemd[1]: Found ordering cycle on network-online.target/start
Jun 15 09:46:54 djledkov-mobl1 systemd[1]: Found dependency on NetworkManager-wait-online.service/start
Jun 15 09:46:54 djledkov-mobl1 systemd[1]: Found dependency on basic.target/start
Jun 15 09:46:54 djledkov-mobl1 systemd[1]: Found dependency on sockets.target/start
Jun 15 09:46:54 djledkov-mobl1 systemd[1]: Found dependency on cups.socket/start
Jun 15 09:46:54 djledkov-mobl1 systemd[1]: Found dependency on sysinit.target/start
Jun 15 09:46:54 djledkov-mobl1 systemd[1]: Found dependency on open-iscsi.service/start
Jun 15 09:46:54 djledkov-mobl1 systemd[1]: Found dependency on network-online.target/start
Jun 15 09:46:54 djledkov-mobl1 systemd[1]: Breaking ordering cycle by deleting job NetworkManager-wait-online.service/start

Same old story -- rcS early boot init script with an overly demanding $remote_fs dependency. That can't work together with NetworkManager. Best solution would be to either move this to $local_fs or provide a proper systemd unit with more fine-grained dependencies.

I ran into that bug again now that I really need open-iscsi ;)

I'm using systemd on vivid.

I want to mount remote disks but I don't want to boot from one.

s/remote_fs/local_fs/ in /etc/init.d/open-iscsi doesn't seem to be enough :-/

Purging open-iscsi (and removing the mount from fstab) was the only escape path.

I'd try to reproduce on a test system but any advice on what I can try next warmly welcome ;)

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=%23775778 seems to be related.

How far is ubuntu from debian on this precise topic ?

For the record, on a wily system, there is still a dependency loop involving open-iscsi but system can still boot successfully.

Roughly, I can do:

# apt-get install open-iscsi
# iscsi_discovery <iscsi server IP>

and see the expected volumes

But rebooting from there causes the dependency loop and open-iscsi is not started on next reboot.

I'll try to reproduce in a vm to provide better info.

still the case in xenial, bumping to high as ending up with no network can be highly problematic.

There was a merge and it would be great if one could verify if the issue still exists with >2.0.873+git0.3b4b4500-13ubuntu1.
It seems that upload missed jtaylors last test by just a few hours.
Currently we have 2.0.873+git0.3b4b4500-14ubuntu1 / 2.0.873+git0.3b4b4500-14ubuntu2 available, but those only differer in autotests.

Please if still an issue share what version you had tested and if possible a few simplified steps how to test it to give us a chance to get this fixed before or early in the 16.04 cycle.

I have rebooted the machine a couple times since and it has not occurred again. Probably the issue has been fixed.
Please reopen if you are still affected.

Occurs consistently on my Xubuntu 16.04 installation. It did infrequently until a few days ago (I don't know exactly).

[ 14.850019] systemd[1]: network-online.target: Found ordering cycle on network-online.target/start
[ 14.850024] systemd[1]: network-online.target: Found dependency on NetworkManager-wait-online.service/start
[ 14.850027] systemd[1]: network-online.target: Found dependency on basic.target/start
[ 14.850029] systemd[1]: network-online.target: Found dependency on sockets.target/start
[ 14.850030] systemd[1]: network-online.target: Found dependency on acpid.socket/start
[ 14.850032] systemd[1]: network-online.target: Found dependency on sysinit.target/start
[ 14.850033] systemd[1]: network-online.target: Found dependency on open-iscsi.service/start
[ 14.850035] systemd[1]: network-online.target: Found dependency on network-online.target/start
[ 14.850037] systemd[1]: network-online.target: Breaking ordering cycle by deleting job NetworkManager-wait-online.service/start
[ 14.850039] systemd[1]: NetworkManager-wait-online.service: Job NetworkManager-wait-online.service/start deleted to break ordering cycle starting with network-online.target/start
[ 14.850092] systemd[1]: network.target: Found ordering cycle on network.target/start
[ 14.850094] systemd[1]: network.target: Found dependency on NetworkManager.service/start
[ 14.850096] systemd[1]: network.target: Found dependency on basic.target/start
[ 14.850098] systemd[1]: network.target: Found dependency on sockets.target/start
[ 14.850099] systemd[1]: network.target: Found dependency on acpid.socket/start
[ 14.850101] systemd[1]: network.target: Found dependency on sysinit.target/start
[ 14.850102] systemd[1]: network.target: Found dependency on open-iscsi.service/start
[ 14.850104] systemd[1]: network.target: Found dependency on network-online.target/start
[ 14.850105] systemd[1]: network.target: Found dependency on network.target/start
[ 14.850107] systemd[1]: network.target: Breaking ordering cycle by deleting job NetworkManager.service/start
[ 14.850109] systemd[1]: NetworkManager.service: Job NetworkManager.service/start deleted to break ordering cycle starting with network.target/start