Re: [PATCH 2/2] man/man5/core.5: Update compression format for systemd-coredump

Alejandro Colomar <[email protected]> Thu, 7 May 2026 22:59:14 +0200
Newsgroups	org.kernel.vger.linux-man
Message-ID	<afz6oASktRUsElC8@devuan>
Hi Patsy, Carlos,

On 2026-05-07T15:05:08-0400, Patsy Griffin wrote:
> As of version 246, systemd-coredump defaults to zstd compression
> for core dumps, rather than lz4.
> 
> Signed-off-by: Patsy Griffin <[email protected]>
> ---
>  man/man5/core.5 | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/man/man5/core.5 b/man/man5/core.5
> index 4da5819b6..ee34eded3 100644
> --- a/man/man5/core.5
> +++ b/man/man5/core.5
> @@ -515,9 +515,13 @@ 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
> +.\" Since Systemd 246:
> +.\" commit ef5924aa313d1892bb491c870ba3c429454dfc76
> +in the directory
>  .IR /var/lib/systemd/coredump/ .
> +Compression on or off is configurable via coredump.conf(5).

Thanks!  I've reformatted it, and moved the comment to the commit
message, where it's less noisy.

	commit XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
	Author: Patsy Griffin <[email protected]>
	Date:   2026-05-07 15:05:08 -0400

	    man/man5/core.5: Update compression format for systemd-coredump
	    
	    As of version 246, systemd-coredump defaults to zstd compression
	    for core dumps, rather than lz4.
	    
	    systemd.git ef5924aa (2020-05-04; "coredump: add zstandard support for coredumps")
	    
	    Signed-off-by: Patsy Griffin <[email protected]>
	    Message-ID: <[email protected]>
	    Reviewed-by: Carlos O'Donell <[email protected]>
	    Message-ID: <[email protected]>
	    [alx: Minor tweaks]
	    Signed-off-by: Alejandro Colomar <[email protected]>

	diff --git a/man/man5/core.5 b/man/man5/core.5
	index 4da5819b..7b02bd5b 100644
	--- a/man/man5/core.5
	+++ b/man/man5/core.5
	@@ -515,9 +515,11 @@ .SS Core dumps and systemd
	 In this case, core dumps will be placed in the location configured for
	 .BR systemd\-coredump (8),
	 typically as
	-.BR lz4 (1)
	+.BR zstd (1)
	 compressed files in the directory
	 .IR /var/lib/systemd/coredump/ .
	+Compression on or off is configurable via
	+.BR coredump.conf (5).
	 One can list the core dumps that have been recorded by
	 .BR systemd\-coredump (8)
	 using

Carlos, I've kept your Rb tag, as nothing has changed meaningfully.
Would you all mind confirming this is okay?


Have a lovely night!
Alex

>  One can list the core dumps that have been recorded by
>  .BR systemd\-coredump (8)
>  using
> -- 
> 2.51.1
> 

-- 
<https://www.alejandro-colomar.es>
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