linux-kernel - Re: [PATCH] docs: admin-guide/blockdev: Use subgraphs in node-states-8.dot

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Date:   Thu, 25 Nov 2021 23:16:48 +0900
From:   Akira Yokosawa <akiyks@...il.com>
To:     Jonathan Corbet <corbet@....net>
Cc:     linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        drbd-dev@...ts.linbit.com,
        Philipp Reisner <philipp.reisner@...bit.com>,
        Lars Ellenberg <lars.ellenberg@...bit.com>
Subject: Re: [PATCH] docs: admin-guide/blockdev: Use subgraphs in
 node-states-8.dot

On Wed, 17 Nov 2021 18:38:14 +0900, Akira Yokosawa wrote:
> While node-states-8.dot has two digraphs, dot(1) command can not
> properly handle multiple graphs in a DOT file.
> 
> Use subgraphs and merge them into a single graph.
> 
> Signed-off-by: Akira Yokosawa <akiyks@...il.com>
> Cc: Philipp Reisner <philipp.reisner@...bit.com>
> Cc: Lars Ellenberg <lars.ellenberg@...bit.com>
> ---
> Hi Jon,
> 
> I happened to spot a broken DOT script at the bottom of
> 
>     https://www.kernel.org/doc/html/latest/admin-guide/blockdev/drbd/figures.html
> 
> and managed to fix it.

Gentle ping?

        Thanks, Akira

> 
> DRBD DRIVER maintainers,
> If I'm missing something here, please let me know.
> 
>         Thanks, Akira
> --
>  .../blockdev/drbd/node-states-8.dot           | 25 +++++++++++--------
>  1 file changed, 14 insertions(+), 11 deletions(-)
> 
> diff --git a/Documentation/admin-guide/blockdev/drbd/node-states-8.dot b/Documentation/admin-guide/blockdev/drbd/node-states-8.dot
> index bfa54e1f8016..993f0c152ead 100644
> --- a/Documentation/admin-guide/blockdev/drbd/node-states-8.dot
> +++ b/Documentation/admin-guide/blockdev/drbd/node-states-8.dot
> @@ -1,13 +1,16 @@
> -digraph node_states {
> -	Secondary -> Primary           [ label = "ioctl_set_state()" ]
> -	Primary   -> Secondary 	       [ label = "ioctl_set_state()" ]
> -}
> +digraph G {
> +	compound=true;
> +	subgraph node_states {
> +		Secondary -> Primary           [ label = "ioctl_set_state()" ]
> +		Primary   -> Secondary 	       [ label = "ioctl_set_state()" ]
> +	}
>  
> -digraph peer_states {
> -	Secondary -> Primary           [ label = "recv state packet" ]
> -	Primary   -> Secondary 	       [ label = "recv state packet" ]
> -	Primary   -> Unknown 	       [ label = "connection lost" ]
> -	Secondary  -> Unknown  	       [ label = "connection lost" ]
> -	Unknown   -> Primary           [ label = "connected" ]
> -	Unknown   -> Secondary         [ label = "connected" ]
> +	subgraph peer_states {
> +		Secondary -> Primary           [ label = "recv state packet" ]
> +		Primary   -> Secondary 	       [ label = "recv state packet" ]
> +		Primary   -> Unknown 	       [ label = "connection lost" ]
> +		Secondary  -> Unknown  	       [ label = "connection lost" ]
> +		Unknown   -> Primary           [ label = "connected" ]
> +		Unknown   -> Secondary         [ label = "connected" ]
> +	}
>  }
> 
> base-commit: 53b606fa29e321352a105978726b975b42b292a4
>