Add monitoring tempfs partitions (drives section)

[estegewr]

Is your feature request related to a problem? Please describe. I use the fantastic rpi-monitor to track some RPIs. Problems of a monitored RPIs also show up by an untypical increase of logfile size. All my log files are stored in a tmpfs partition to reduce "physical" read-write accesses. Unofrtunately, tmpfs partitions are not listed under drives section.

Describe the solution you'd like Add tmpfs partitions in monitoring (drives section).

Additional context

df -h
tmpfs           400M   43M  358M  11% /var/log
/dev/loop1       54M   54M     0 100% /snap/core20/1825

/snap/core20/1825 is reported via MQTT by rpi-monitor, but /var/log not.

[ironsheep]

@estegewr Would you be willing to provide example commands for how you set this up? I can then replicate what you are doing and maybe adjust my scripts to see these partitions.

[estegewr]

@estegewr Would you be willing to provide example commands for how you set this up? I can then replicate what you are doing and maybe adjust my scripts to see these partitions.

Thanks, @ironsheep for your openness to implement this feature. To create a temporary filesystem e.g. for /var/log add them to your /etc/fstab file. See example below for a few directories:

tmpfs   /tmp        tmpfs   defaults,noatime,nosuid,size=150m       0 0
tmpfs   /var/tmp    tmpfs   defaults,noatime,nosuid,size=50m        0 0
tmpfs   /var/log    tmpfs   defaults,noatime,nosuid,mode=0755,size=400m 0 0
#tmpfs  /var/run    tmpfs   defaults,noatime,nosuid,mode=0755,size=2m   0 0

See also this out of many tutorials explaining the purpose and the procedure to create tempos for certain directories with files which get written repeatedly (and bringing a SD card to an increasing risk to fail).

[bsimmo]

As a side, in the article you can now do read only in Raspi-config. Another alternative is to reduce the logging in the first place and disable what you can, there was a recent post in RPi forum going through bits and bobs on this.