[PATCH 1/2] man/man7/suffixes.7: Add .zst suffix

[PATCH 1/2] man/man7/suffixes.7: Add .zst suffix

[Patsy Griffin]

Signed-off-by: Patsy Griffin <patsy@redhat.com>
---
 man/man7/suffixes.7 | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/man/man7/suffixes.7 b/man/man7/suffixes.7
index e21ac3ab8..3e17afc77 100644
--- a/man/man7/suffixes.7
+++ b/man/man7/suffixes.7
@@ -255,6 +255,11 @@ File compressed using
 T}
 \&.zip	\f[B]zip\f[](1) archive
 \&.zoo	\f[B]zoo\f[](1) archive
+\&.zst	T{
+File compressed using
+.BR zstd (1)
+format
+T}
 \&\[ti]	Emacs or \f[B]patch\f[](1) backup file
 \&rc	startup (`run control') file, e.g., \f[I].newsrc\f[]
 .TE
-- 
2.51.1

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

[Patsy Griffin]

As of version 246, systemd-coredump defaults to zstd compression
for core dumps, rather than lz4.

Signed-off-by: Patsy Griffin <patsy@redhat.com>
---
 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).
 One can list the core dumps that have been recorded by
 .BR systemd\-coredump (8)
 using
-- 
2.51.1

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

[Alejandro Colomar]

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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 <patsy@redhat.com>
> ---
>  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 <patsy@redhat.com>
	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 <patsy@redhat.com>
	    Message-ID: <20260507190508.386186-2-patsy@redhat.com>
	    Reviewed-by: Carlos O'Donell <carlos@redhat.com>
	    Message-ID: <eb5c6c20-48a3-46a9-9918-12beffb8e6bc@redhat.com>
	    [alx: Minor tweaks]
	    Signed-off-by: Alejandro Colomar <alx@kernel.org>

	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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Re: [PATCH 1/2] man/man7/suffixes.7: Add .zst suffix

[Alejandro Colomar]

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Hi Patsy,

On 2026-05-07T15:05:07-0400, Patsy Griffin wrote:
> Signed-off-by: Patsy Griffin <patsy@redhat.com>

Thanks!  I've applied the patch.


Cheers,
Alex

> ---
>  man/man7/suffixes.7 | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/man/man7/suffixes.7 b/man/man7/suffixes.7
> index e21ac3ab8..3e17afc77 100644
> --- a/man/man7/suffixes.7
> +++ b/man/man7/suffixes.7
> @@ -255,6 +255,11 @@ File compressed using
>  T}
>  \&.zip	\f[B]zip\f[](1) archive
>  \&.zoo	\f[B]zoo\f[](1) archive
> +\&.zst	T{
> +File compressed using
> +.BR zstd (1)
> +format
> +T}
>  \&\[ti]	Emacs or \f[B]patch\f[](1) backup file
>  \&rc	startup (`run control') file, e.g., \f[I].newsrc\f[]
>  .TE
> -- 
> 2.51.1
> 
> 

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

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

[Carlos O'Donell]

On 5/7/26 4:59 PM, Alejandro Colomar wrote:
> 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 <patsy@redhat.com>
>> ---
>>   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 <patsy@redhat.com>
> 	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 <patsy@redhat.com>
> 	    Message-ID: <20260507190508.386186-2-patsy@redhat.com>
> 	    Reviewed-by: Carlos O'Donell <carlos@redhat.com>
> 	    Message-ID: <eb5c6c20-48a3-46a9-9918-12beffb8e6bc@redhat.com>
> 	    [alx: Minor tweaks]
> 	    Signed-off-by: Alejandro Colomar <alx@kernel.org>
> 
> 	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?
  
Absolutely. LGTM.

  
> Have a lovely night!
> Alex
> 
>>   One can list the core dumps that have been recorded by
>>   .BR systemd\-coredump (8)
>>   using
>> -- 
>> 2.51.1
>>
> 


-- 
Cheers,
Carlos.

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

[Patsy Griffin]

LGTM.  Thank you!



On Thu, May 7, 2026 at 4:59 PM Alejandro Colomar <alx@kernel.org> wrote:
>
> 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 <patsy@redhat.com>
> > ---
> >  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 <patsy@redhat.com>
>         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 <patsy@redhat.com>
>             Message-ID: <20260507190508.386186-2-patsy@redhat.com>
>             Reviewed-by: Carlos O'Donell <carlos@redhat.com>
>             Message-ID: <eb5c6c20-48a3-46a9-9918-12beffb8e6bc@redhat.com>
>             [alx: Minor tweaks]
>             Signed-off-by: Alejandro Colomar <alx@kernel.org>
>
>         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>