[systemd-bugs] [Bug 70002] New: Found ordering cycle on local-fs.target/stop (Due to network mount)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70002

          Priority: medium
            Bug ID: 70002
          Assignee: systemd-bugs at lists.freedesktop.org
           Summary: Found ordering cycle on local-fs.target/stop (Due to
                    network mount)
        QA Contact: systemd-bugs at lists.freedesktop.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: umut at tezduyar.com
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: general
           Product: systemd

Adding a network mount point creates a cycling stop dependency that becomes
visible during shutdown with systemd 207.

I started seeing following message on my journal:


2013-09-30T23:19:23.726+00:00 [ WARNING ] systemd[1]: Found ordering cycle on
local-fs.target/stop
2013-09-30T23:19:23.726+00:00 [ INFO    ] systemd[1]: Walked on cycle path to
var-spool-storage-NetworkShare.mount/stop
2013-09-30T23:19:23.727+00:00 [ INFO    ] systemd[1]: Walked on cycle path to
network.target/stop
2013-09-30T23:19:23.728+00:00 [ INFO    ] systemd[1]: Walked on cycle path to
net at eth0.service/stop
2013-09-30T23:19:23.728+00:00 [ INFO    ] systemd[1]: Walked on cycle path to
basic.target/stop
2013-09-30T23:19:23.736+00:00 [ INFO    ] systemd[1]: Walked on cycle path to
sysinit.target/stop
2013-09-30T23:19:23.737+00:00 [ INFO    ] systemd[1]: Walked on cycle path to
local-fs.target/stop
2013-09-30T23:19:23.740+00:00 [ WARNING ] systemd[1]: Breaking ordering cycle
by deleting job var-spool-storage-NetworkShare.mount/stop

Steps to reproduce

1) Mount network drive: mount -t cifs -o username=x,password=x //x.x.x.x/video
/var/spool/storage/NetworkShare
2) Powercycle with systemctl reboot

Cycle can be seen here:

[root@ /mnt/flash/root]1391# systemctl show -p Before
var-spool-storage-NetworkShare.mount
Before=local-fs.target umount.target
[root@ /mnt/flash/root]1391# systemctl show -p Before local-fs.target
Before=sysinit.target journal-flush.service
[root@ /mnt/flash/root]1391# systemctl show -p Before sysinit.target
Before=basic.target dbus.socket sshd.socket rescue.target rescue.service
[root@ /mnt/flash/root]1391# systemctl show -p Before basic.target
Before=rsyslog.service dbus.service sshdgenkeys.service multi-user.target
systemd-ask-password-wall.service net at eth0.service
[root@ /mnt/flash/root]1391# systemctl show -p Before net at eth0.service
Before=network.target shutdown.target
[root@ /mnt/flash/root]1391# systemctl show -p Before network.target
Before=multi-user.target var-spool-storage-NetworkShare.mount

I believe the problem is coming from:

src/core/mount.c (mount_add_one) > r = unit_add_dependency_by_name(u,
UNIT_BEFORE, SPECIAL_LOCAL_FS_TARGET, NULL, true);

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