Difficulty with fstab

Q&A
1

Hello ,

the automatic mount by fstab, does not work for network units.
After full boot, ‘sudo mount -a’ works normally.
My network drives require a login/password that is in /root/.credentials
Is a mistake on my part?
Is there a way to set a delay before mounting the network units?

@clr-jpb~ sudo systemctl list-units --all *.mount Mot de passe : UNIT LOAD ACTIVE SUB DESCRIPTION -.mount loaded active mounted / ● **home-JeanPhilippe-svg.mount** loaded **failed** **failed** /home/JeanPhilippe/svg ● **home-JeanPhilippe-synodev.mount** loaded **failed** **failed** /home/JeanPhilippe/synodev proc-sys-fs-binfmt_misc.mount loaded inactive dead Arbitrary Executable File Formats File System run-user-1000-doc.mount loaded active mounted /run/user/1000/doc run-user-1000-gvfs.mount loaded active mounted /run/user/1000/gvfs run-user-1000.mount loaded active mounted /run/user/1000 ● sys-fs-fuse-connections.mount not-found inactive dead sys-fs-fuse-connections.mount ● sys-kernel-config.mount not-found inactive dead sys-kernel-config.mount tmp.mount loaded active mounted Temporary Directory (/tmp) usr-lib-debug.mount loaded active mounted /usr/lib/debug usr-src-debug.mount loaded active mounted /usr/src/debug var-lib-machines.mount loaded inactive dead Virtual Machine and Container Storage (Compatibility) ... @clr-jpb~ sudo mount -a
@clr-jpb~ $ sudo systemctl list-units --all *.mount
UNIT LOAD ACTIVE SUB DESCRIPTION
-.mount loaded active mounted /
home-JeanPhilippe-svg.mount loaded active mounted /home/JeanPhilippe/svg
home-JeanPhilippe-synodev.mount loaded active mounted /home/JeanPhilippe/synodev
proc-sys-fs-binfmt_misc.mount loaded inactive dead Arbitrary Executable File Formats File System
run-user-1000-doc.mount loaded active mounted /run/user/1000/doc
run-user-1000-gvfs.mount loaded active mounted /run/user/1000/gvfs
run-user-1000.mount loaded active mounted /run/user/1000
● sys-fs-fuse-connections.mount not-found inactive dead sys-fs-fuse-connections.mount
● sys-kernel-config.mount not-found inactive dead sys-kernel-config.mount
tmp.mount loaded active mounted Temporary Directory (/tmp)
usr-lib-debug.mount loaded active mounted /usr/lib/debug
usr-src-debug.mount loaded active mounted /usr/src/debug
var-lib-machines.mount loaded inactive dead Virtual Machine and Container Storage (Compatibility)
…

2

Make sure you have the auto flag set. Can you show your fstab entry? You can censor parts you don’t want to disclose, of course.

3

Thank you for your answer,
I already have the auto flag, but I have a lot of other flags I’m not sure about.

fstab
//192.168.1.21/homes/JeanPhilippe/svgposte /home/JeanPhilippe/svg cifs credentials=/root/.smbcredentials,iocharset=utf8,auto,gid=100,uid=1000,_netdev 0 0
//192.168.1.21/web /home/JeanPhilippe/synodev cifs credentials=/root/.smbcredentials,iocharset=utf8,auto,gid=100,uid=1000,_netdev 0 0

4

Even without _netdev, systemd will automatically move these units from local-fs.target to remote-fs.target. You can see this by running systemctl show remote-fs.target - you’ll see your mounts are listed as part of Requires=.

You can query the status and journals for each of these mounts with systemctl status $unit and journalctl -u $unit. $unit here is something like home-JeanPhilippe-synodev.mount.

I don’t see anything wrong with your fstab entries, though. I don’t use _netdev myself, but I don’t think it would hurt.

5

I see the error but I can’t find the cause of the error?
Are the root and network operational at the time of the fstab analysis?

JeanPhilippe@clr-jpb~ $ systemctl status home-JeanPhilippe-synodev.mount
Warning: The unit file, source configuration file or drop-ins of home-JeanPhilippe-synodev.mount changed on disk. Run ‘systemctl daemon-reload’ to reload units.
● home-JeanPhilippe-synodev.mount - /home/JeanPhilippe/synodev
Loaded: loaded (/etc/fstab; generated)
Active: failed (Result: exit-code) since Mon 2019-09-30 07:50:37 CEST; 23s ago
Where: /home/JeanPhilippe/synodev
What: //192.168.1.21/web
Docs: man:fstab(5)
man:systemd-fstab-generator(8)

sept. 30 07:50:37 clr-jpb systemd[1]: Mounting /home/JeanPhilippe/synodev…
sept. 30 07:50:37 clr-jpb mount[529]: mount error(2): No such file or directory
sept. 30 07:50:37 clr-jpb mount[529]: Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) and kernel log messages (dmesg)
sept. 30 07:50:37 clr-jpb systemd[1]: home-JeanPhilippe-synodev.mount: Mount process exited, code=exited, status=32/n/a
sept. 30 07:50:37 clr-jpb systemd[1]: home-JeanPhilippe-synodev.mount: Failed with result ‘exit-code’.
sept. 30 07:50:37 clr-jpb systemd[1]: Failed to mount /home/JeanPhilippe/synodev.
JeanPhilippe@clr-jpb~ $ sudo mount -a
Mot de passe :
JeanPhilippe@clr-jpb~ $ systemctl status home-JeanPhilippe-synodev.mount
Warning: The unit file, source configuration file or drop-ins of home-JeanPhilippe-synodev.mount changed on disk. Run ‘systemctl daemon-reload’ to reload units.
● home-JeanPhilippe-synodev.mount - /home/JeanPhilippe/synodev
Loaded: loaded (/etc/fstab; generated)
Active: active (mounted) since Mon 2019-09-30 07:51:09 CEST; 2s ago
Where: /home/JeanPhilippe/synodev
What: //192.168.1.21/web
Docs: man:fstab(5)
man:systemd-fstab-generator(8)

6

Try to enable the following process

sudo systemctl enable systemd-networkd-wait-online

Ran into this issue and the problem was that it was trying to mount before obtaining an IP address.