GNU bug report logs - #33785
df: don't suppress remote mounts

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From: Pádraig Brady <P <at> draigBrady.com>
To: 33785 <at> debbugs.gnu.org
Subject: bug#33785: df: don't suppress remote mounts
Date: Wed, 19 Dec 2018 09:05:03 -0800

On 17/12/18 22:42, lzhong wrote:
> Hi list,
> 
> According to the following commit
> 
> commit 2e81e62243409c5c574b899f52b08c000e4d99fd
> Author: Pádraig Brady <P <at> draigBrady.com>
> Date:   Wed Oct 29 02:49:17 2014 +0000
> 
>      df: only suppress remote mounts of separate exports with --total
> 
> ...
> 
> diff --git a/NEWS b/NEWS
> index 5d3bc58bd..2c7e590e0 100644
> --- a/NEWS
> +++ b/NEWS
> @@ -32,6 +32,11 @@ GNU coreutils NEWS                                    
> -*- outline -*-
> 
>   ** Changes in behavior
> 
> +  df no longer suppresses separate exports of the same remote device, as
> +  these are generally explicitly mounted.  The --total option does still
> +  suppress duplicate remote file systems.
> +  [suppression was introduced in coreutils-8.21]
> 
> The remote mounts should not be suppressed after this change. However, 
> it turns out
> 
> it doesn't work as the message described. The remote mounts are still 
> suppressed. And here is
> 
> my patch for this problem:
> 
>    1 From 72be959fc9f49420b07b4df5c5017821232cf498 Mon Sep 17 00:00:00 2001
>    2 From: Lidong Zhong <lzhong <at> suse.com>
>    3 Date: Tue, 18 Dec 2018 14:24:13 +0800
>    4 Subject: [PATCH] df: don't suppress remote mounts
>    5 MIME-Version: 1.0
>    6 Content-Type: text/plain; charset=UTF-8
>    7 Content-Transfer-Encoding: 8bit
>    8
>    9 This is the fix for the following commit.
>   10 commit 2e81e62243409c5c574b899f52b08c000e4d99fd
>   11 Author: Pádraig Brady <P <at> draigBrady.com>
>   12 Date:   Wed Oct 29 02:49:17 2014 +0000
>   13
>   14     df: only suppress remote mounts of separate exports with --total
>   15
>   16 It doesn't work as the commit message described. The remote mounts
>   17 are also suppressed after this change.
>   18 ---
>   19  src/df.c | 2 +-
>   20  1 file changed, 1 insertion(+), 1 deletion(-)
>   21
>   22 diff --git a/src/df.c b/src/df.c
>   23 index 55532219f..0246e3df9 100644
>   24 --- a/src/df.c
>   25 +++ b/src/df.c
>   26 @@ -722,7 +722,7 @@ filter_mount_list (bool devices_only)
>   27                                             < strlen (me->me_mntroot));
>   28                if (! print_grand_total
>   29                    && me->me_remote && seen_dev->me->me_remote
>   30 -                  && ! STREQ (seen_dev->me->me_devname, 
> me->me_devname))
>   31 +                  && STREQ (seen_dev->me->me_devname, me->me_devname))
>   32                  {
>   33                    /* Don't discard remote entries with different 
> locations,
>   34                       as these are more likely to be explicitly 
> mounted.
> 
> Please share your opinion.

The intent of the patch was not to suppress _separate_ exports on the server.
I.E. nas.example.com:/Photos and nas.example.com:/Download would not
be suppressed (even if they have the same device id).

If you want all nfs mounts you could `df -a -t nfs`

cheers,
Pádraig

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