Where else can tmpfs be mounted besides /tmp?

Maturin · Sunday at 12:40 AM

cracauer@ said:
What you are thinking of is /run/,

Not only. You're right about not /var/ completely, but I was also thinking of /var/log/

cracauer@ · Sunday at 12:49 AM

Maturin said:
Not only. You're right about not /var/ completely, but I was also thinking of /var/log/

What about subdirectories in /var/log/? Will syslogd create them when it wants to open a logfile for writing?

Alain De Vos · Sunday at 1:35 AM

I have an influxdb, mariadb, postgresqldb running in /var.
These things want to survive reboots.

Alain De Vos · Sunday at 1:37 AM

Dear Cracauer, this let me think, in fact some directories, i could mount read-only.
When i don't install packages /usr/local
When i don't upgrade system /sbin & /bin & /boot

But then maybe /sbin cannot be a mountable read-only partition. Who is gonna mount /sbin , which has /sbin/init ?

Even for /usr zfs mount did not worked, special line needed in fstab.

Code:

SSD/usr              /usr                zfs         rw                              0   0

kpedersen · Monday at 5:43 PM

cracauer@ said:
~//.cache can contain data that, yes, is automatically re-created. But it can be very expensive, for example local LLMs can be stored there and you would have to re-download 100 GB per model. You don't want to do that after every reboot.

I tend to feel a 100GB model isn't a cache thing. It should be handled as proper data and stored somewhere less volatile.

I do want /var/cache and ~/.cache to be wiped each reboot to avoid clutter building up. Though admittedly, tmpfs and storing all this noise in RAM seems quite wasteful.

Alain De Vos · Monday at 9:29 PM

Kpederson, did analysis,
/tmp , almost nothing
/var/tmp , almost nothing
/home/myuser/.cache ,well half a gigabyte. Why browser. There is the stuff. On reboot let browser take this back.

kpedersen · Monday at 11:09 PM

Alain De Vos said:
/home/myuser/.cache ,well half a gigabyte. Why browser. There is the stuff. On reboot let browser take this back.

Yeah, the crap that the browser generates I am also quite happy to blow away on each reboot.
I would probably opt for @reboot cron task though rather than storing in ram via tmpfs.

Alain De Vos · Monday at 11:11 PM

I just found out i use cron, but i'm an fcron man.