GNU bug report logs - #51482
dd with status=progress does not update its output when the main writing is finished

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

From: Sworddragon <sworddragon2 <at> gmail.com>
To: bug-coreutils <at> gnu.org
Subject: dd with status=progress does not update its output when the main
 writing is finished
Date: Fri, 29 Oct 2021 14:22:02 +0000

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

Originally found as additional minor bug in ticket #51345 (Knoppix 9.1 with
GNU Coreutils 8.32), I think it is a good idea to create a dedicated report
for it to avoid getting it lost.

When dd is being used with status=progress it appears to update the status
every second but does not do a final update when dd finished its main
writing task (e.g. when dd starts flushing via conv=fsync and it still
blocks for like over a minute) causing the output to be incorrect and
inconsistent across multiple tries.

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

Message #10 received at 51482-done <at> debbugs.gnu.org (full text, mbox):

From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Sworddragon <sworddragon2 <at> gmail.com>
Cc: 51482-done <at> debbugs.gnu.org
Subject: Re: bug#51482: dd with status=progress does not update its output
 when the main writing is finished
Date: Thu, 27 Jan 2022 18:38:44 -0800

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

On 10/29/21 07:22, Sworddragon wrote:

> When dd is being used with status=progress it appears to update the status
> every second but does not do a final update when dd finished its main
> writing task (e.g. when dd starts flushing via conv=fsync and it still
> blocks for like over a minute) causing the output to be incorrect and
> inconsistent across multiple tries.

Thanks for mentioning that. I installed the attached to implement your 
suggestion, and am boldly closing the bug report. Please give it a try 
when you have the chance.

[0001-dd-output-final-progress-before-syncing.patch (text/x-patch, attachment)]

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