[systemd-devel] journal: How to limit the file size of runtime system.journal

[Zbigniew Jędrzejewski-Szmek]

On Fri, Dec 13, 2013 at 01:33:17PM +0800, WANG Chao wrote:
> Hi,
> 
> In kdump environment, memory resource is quite limited. I find that the
> runtime journal file (/run/log/journal/$id/system.journal) is 4 MB and I
> think that is too much for a initramfs context.
> 
> After tuning both RuntimeMaxUse=1% or RuntimeMaxFileSiz=100K, I find
> system.journal is still 4 MB in size. So here comes my questions:
> 
> 1. Did miss use of these two config options? Because regarding the
> journald.conf(5), it seems I was totally doing it right.
4MB is the minimum. Those settings are ignored if you set anything
lower.

> 2. If I was doing it wrong, how can I limit this file size?
It's not possible below this threshold.

Zbyszek