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tedd

Member

Registered: 2013-02-21

Posts: 26

Deluge starting at boot without required dependency [Solved]

I'm trying to prevent deluged starting without the NFS mount present.
I have an NFS mount at /mnt/bittorrent, which I've temporarily commented out in /etc/fstab.
My config for deluged is as follows:

# systemctl cat deluged.service
# /usr/lib/systemd/system/deluged.service
[Unit]
Description=Deluge Daemon
After=network.target

[Service]
User=deluge
ExecStart=/usr/bin/deluged -d
UMask=0002

[Install]
WantedBy=multi-user.target

# /etc/systemd/system/deluged.service.d/override.conf
[Service]
ExecStart=
ExecStart=/usr/bin/deluged -d -L info -l /var/log/deluge.log
Nice=19

[Unit]
Requires=mnt-bittorrent.mount

It looks like dependencies are correct:

# systemctl list-dependencies deluged
deluged.service
● ├─mnt-bittorrent.mount
● ├─system.slice
● └─sysinit.target
●   ├─dev-hugepages.mount
●   ├─dev-mqueue.mount
...

And yet, after reboot:

# systemctl status deluged
● deluged.service - Deluge Daemon
   Loaded: loaded (/usr/lib/systemd/system/deluged.service; enabled; vendor preset: disabled)
  Drop-In: /etc/systemd/system/deluged.service.d
           └─override.conf
   Active: active (running) since Thu 2019-02-21 21:07:12 AEST; 1min 42s ago
 Main PID: 286 (deluged)
    Tasks: 7 (limit: 1042)
   Memory: 57.1M
   CGroup: /system.slice/deluged.service
           └─286 /usr/bin/python2 /usr/bin/deluged -d -L info -l /var/log/deluge.log

Feb 21 21:07:12 sinclair systemd[1]: Started Deluge Daemon.

# systemd-analyze critical-chain deluged.service
The time after the unit is active or started is printed after the "@" character.
The time the unit takes to start is printed after the "+" character.

deluged.service @13.593s
└─network.target @13.323s
  └─dhcpcd@eth0.service @10.039s +3.245s
    └─sys-subsystem-net-devices-eth0.device @9.973s

And /mnt/bittorrent is not mounted.

When I stop and start deluged this happens:

# systemctl stop deluged
# systemctl start deluged
Failed to start deluged.service: Unit mnt-bittorrent.mount not found.

Why does it start on boot but not manually??

Last edited by tedd (2019-02-22 02:48:23)

edacval

Member

From: .LT

Registered: 2008-10-23

Posts: 98

Re: Deluge starting at boot without required dependency [Solved]

Try RequiresMountsFor

[Unit]
RequiresMountsFor=/mnt/bittorent

rcasa

Member

From: Geneva, Switzerland

Registered: 2019-01-30

Posts: 3

Re: Deluge starting at boot without required dependency [Solved]

You can also try

[Unit]
BindsTo=mnt-bittorrent.mount
After=mnt-bittorrent.mount

That however does not answer why it starts on boot but not manually.  It may relate to having commented the NFS mount in /etc/fstab, then mnt-bittorrent.mount becomes an inexistent (not-found) unit, and systemd somehow handles inexistent units differently on boot.

tedd

Member

Registered: 2013-02-21

Posts: 26

Re: Deluge starting at boot without required dependency [Solved]

Try RequiresMountsFor

[Unit]
RequiresMountsFor=/mnt/bittorent

You can also try

[Unit]
BindsTo=mnt-bittorrent.mount
After=mnt-bittorrent.mount

Thank you both for your suggestions. edacval's suggestion didn't work, but rcasa's did. When the NFS mountpoint is not mounted (or doesn't exist, in this case), using BindsTo= ensures that the daemon doesn't start. SystemD logs an error, but I guess that's ok.

I wasn't aware that Requires= is not a hard dependency and I still don't understand why there's a difference between boot and manual daemon starting.