Re: [PATCH] man/man5/core.5: Update compression format for systemd-coredump

[Carlos O'Donell <carlos@redhat.com>]

On 5/1/26 3:06 PM, Patsy Griffin wrote:
> As of version 246, systemd-coredump defaults to zstd compression
> for core dumps, rather than lz4.
> 
> Signed-off-by: Patsy Griffin <patsy@redhat.com>

LGTM.

I thought coredump.conf allowed you to specify which compression format,
but I was wrong, you can only turn it on or off. This looks correct and on
my system all my coredumps are *.zst today. Best to update this to match
latest deployments.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

> ---
>   man/man5/core.5 | 9 +++++++--
>   1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/man/man5/core.5 b/man/man5/core.5
> index 4da5819b6..83c49d42d 100644
> --- a/man/man5/core.5
> +++ b/man/man5/core.5
> @@ -515,9 +515,14 @@ program:
>   In this case, core dumps will be placed in the location configured for
>   .BR systemd\-coredump (8),
>   typically as
> -.BR lz4 (1)
> -compressed files in the directory
> +.BR zstd (1)
> +compressed files
> +ending in ".zst"
> +.\" Since Systemd 246:
> +.\" commit ef5924aa313d1892bb491c870ba3c429454dfc76
> +in the directory
>   .IR /var/lib/systemd/coredump/ .
> +Compression on or off is configurable via coredump.conf(5).
>   One can list the core dumps that have been recorded by
>   .BR systemd\-coredump (8)
>   using


-- 
Cheers,
Carlos.