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quayasil

Member

Registered: 2008-11-09

Posts: 117

systemd: Increasing maximal /run tmpfs size (on-the fly?)

IMHO without systemd mounting was somewhat easier...

The problem is: by default systemd allocates 0.5*RAM of memory for the tmpfs mounted as /run (precisely: it is the maximal limit for use). I'm wondering how can I increase this value to, let's say, 0.6*RAM?
The other question is: can I set a new value and remount it on-the-fly, that is: without rebooting a working system?

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,435

Re: systemd: Increasing maximal /run tmpfs size (on-the fly?)

You can redefine them in fstab the same way as "before" systemd. Add an appropriate tmpfs line with your new size definition.

https://www.freedesktop.org/wiki/Softwa … leSystems/

Last edited by V1del (2018-08-22 11:12:15)

WorMzy

Administrator

From: Scotland

Registered: 2010-06-16

Posts: 13,718

Website

Re: systemd: Increasing maximal /run tmpfs size (on-the fly?)

For your other question, you need to use the `remount` and `size` mount options.

man mount tmpfs

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CarbonChauvinist

Member

Registered: 2012-06-16

Posts: 413

Website

Re: systemd: Increasing maximal /run tmpfs size (on-the fly?)

I've always used the following, from the wiki on tmpfs, to on the fly resize /tmp

The tmpfs can also be temporarily resized without the need to reboot, for example when a large compile job needs to run soon. In this case, run:

# mount -o remount,size=4G,noatime /tmp

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