GNU bug report logs - #20948
Facing error using coreutil "dd - convert and copy a file"

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Sunil Yadav <sunil_sasken <at> yahoo.com>
To: "bug-coreutils <at> gnu.org" <bug-coreutils <at> gnu.org>
Subject: Facing error using coreutil "dd - convert and copy a file"
Date: Wed, 1 Jul 2015 05:44:50 +0000 (UTC)

[Message part 1 (text/plain, inline)]

Hi,
In one of my tool unix command "dd" to convert and copy a file has been used.

Most of time this commands runs well while executing with following options

dd ibs=20b if=/tmp/test3

output:
16019+1 records in
320380+1 records out
164034561 bytes (164 MB) copied, 4.92556 s, 33.3 MB/s

With coreutil version 8.4 I am facing following error:

    dd: writing in "Standard stdin": The connection was reset by the communication partner

output:
102+0 records in
2036+0 records out
1042432 bytes (1,0 MB) copy, 0,00816693 s, 128 MB/s

what could be the reason for this error?

dd --version
dd (coreutils) 8.4
Copyright (C) 2010 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

Written by Paul Rubin, David MacKenzie, and Stuart Kemp.


Thanks.
Kind regards,Sunil

[Message part 2 (text/html, inline)]

Message #8 received at 20948 <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: Sunil Yadav <sunil_sasken <at> yahoo.com>, 20948 <at> debbugs.gnu.org
Subject: Re: bug#20948: Facing error using coreutil "dd - convert and copy
 a file"
Date: Wed, 01 Jul 2015 10:26:49 +0100

On 01/07/15 06:44, Sunil Yadav wrote:
> Hi,
> 
> In one of my tool unix command "dd" to convert and copy a file has been used.
> 
> Most of time this commands runs well while executing with following options
> 
> dd ibs=20b if=/tmp/test3
> 
> output:
> 16019+1 records in
> 320380+1 records out
> 164034561 bytes (164 MB) copied, 4.92556 s, 33.3 MB/s
> 
> With coreutil version 8.4 I am facing following error:
> 
>     dd: writing in "Standard stdin": The connection was reset by the communication partner
> 
> output:
> 102+0 records in
> 2036+0 records out
> 1042432 bytes (1,0 MB) copy, 0,00816693 s, 128 MB/s
> 
> what could be the reason for this error?


sounds like /tmp/test3 is a socket and the writing is
forcibly closing it while dd is reading?

Message #11 received at 20948 <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Sunil Yadav <sunil_sasken <at> yahoo.com>, 20948 <at> debbugs.gnu.org
Subject: Re: bug#20948: Facing error using coreutil "dd - convert and copy
 a file"
Date: Wed, 01 Jul 2015 13:54:06 -0700

Sunil Yadav wrote:
> dd ibs=20b if=/tmp/test3
>
> output:
> 16019+1 records in
> 320380+1 records out
> 164034561 bytes (164 MB) copied, 4.92556 s, 33.3 MB/s
>
> With coreutil version 8.4 I am facing following error:
>
>      dd: writing in "Standard stdin": The connection was reset by the communication partner

Is that the exact message you're getting?  Nothing like that message seems to be 
in the source code.

Can you run the following command instead?

  strace -o tr dd ibs=20b if=/tmp/test3

and look in 'tr' for the system calls that fail and generate the diagnostics 
you're seeing?

Can you reproduce the problem in coreutils 8.23, the current version?  Perhaps 
the bug, whatever it is, has already been fixed.

Message #14 received at 20948 <at> debbugs.gnu.org (full text, mbox):

From: Assaf Gordon <assafgordon <at> gmail.com>
To: 20948 <at> debbugs.gnu.org
Subject: Re: bug#20948: Facing error using coreutil "dd - convert and copy a
 file"
Date: Mon, 22 Oct 2018 20:34:33 -0600

tags 20948 moreinfo
close 20948
stop

(triaging old bugs)

On 01/07/15 02:54 PM, Paul Eggert wrote:
> Sunil Yadav wrote:
>>
>> With coreutil version 8.4 I am facing following error:
>>
>>      dd: writing in "Standard stdin": The connection was reset by the 
>> communication partner
> 
> Is that the exact message you're getting?  Nothing like that message 
> seems to be in the source code.
> 
> Can you run the following command instead?
> 
>    strace -o tr dd ibs=20b if=/tmp/test3
> 
> and look in 'tr' for the system calls that fail and generate the 
> diagnostics you're seeing?
> 
> Can you reproduce the problem in coreutils 8.23, the current version?  
> Perhaps the bug, whatever it is, has already been fixed.

With no further follow-ups in 3 years,
I'm closing this bug.

-assaf

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