[tech] Eggman losing /mp3s

[David Adam]

On Tue, 9 Apr 2019, jimbo wrote:
> When I arrived at UCC today, Grace metioned to me that eggman was no 
> longer displaying any music to play in the web interface.
> 
> I logged in and discovered that /mp3s was unmounted. This unfortunately 
> means that after remounting, mpd has to do a database update which is 
> quite slow.
> 
> Has anyone rebooted eggman recently?

Looks like it got rebooted recently:

# uptime --since
2019-04-05 19:14:42

# last -x
root     pts/0        motsugo.ucc.gu.u Tue Apr  9 16:23   still logged in
runlevel (to lvl 5)   3.18.0-trunk-rpi Fri Apr  5 19:14 - 16:27 (3+21:12)
reboot   system boot  3.18.0-trunk-rpi Thu Jan  1 08:00 - 16:27 (17995+08:27
shutdown system down  3.18.0-trunk-rpi Fri Apr  5 19:14 - 08:00 (-17991+-11:
root     pts/0        motsugo.ucc.gu.u Fri Apr  5 18:10 - down   (01:03)

(edited for brevity)

>From /var/log/auth.log:

Apr  5 18:10:23 eggman sshd[592]: Accepted publickey for root from 
130.95.13.7 port 48916 ssh2: ED25519 <REDACTED>

Finding the key from the fingerprint is a bit of a pain (though 
StackOverflow is helpful <https://unix.stackexchange.com/questions/2116/>) 
but anyway, [FVP] is the person you want to ask.

--

I suppose the real question is "why doesn't /mp3s mount on boot", and I 
*think* the answer is that none of the systemd "wait" services is enabled 
<https://www.freedesktop.org/wiki/Software/systemd/NetworkTarget/#cutthecraphowdoimakesurethatmyservicestartsafterthenetworkisreallyonline>

I've turned on systemd-networkd-wait-online.service with
# systemctl enable systemd-networkd-wait-online.service
# systemctl start systemd-networkd-wait-online.service

So hopefully that should do the job.

[DAA]
zanchey@