Re: [gentoo-dev] systems-246 changes tmpfs default size from 50% to 10% of RAM

[Mike Gilbert <floppym@gentoo.org>]

On Tue, Jul 28, 2020 at 2:50 PM Zoltan Puskas <zoltan@sinustrom.info> wrote:
>
> Hi,
>
> I've upgraded to and running systemd-246_rc2 on one of my systems and
> noticed that tmpfs mounted directories are significantly smaller.
>
> This is because with commit
> https://github.com/systemd/systemd/commit/7d85383edbab73274dc81cc888d884bb01070bc2
> they have changed them to be 10% of the physical memory instead of the
> default of 50%.
>
> This is a potentially breaking, or at least an unexpected behaviour
> change, especially for people using tmpfs on /tmp for compiling.
>
> Maybe we should make a news item to let people know that they either
> need to add an fstab entry with size option set, or better, create a
> systemd local override with relevant content.

Don't use /tmp for PORTAGE_TMPDIR. /tmp is meant for small temporary
storage. If you want to compile in a tmpfs, set up a separate mount
point for it.

I don't intend to create a news item for this, but I would not object
to someone else doing it.