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

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#51482: closed (dd with status=progress does not update its
 output when the main writing is finished)
Date: Fri, 28 Jan 2022 02:39:01 +0000

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Your message dated Thu, 27 Jan 2022 18:38:44 -0800
with message-id <3bf36eb9-79cf-f0ef-bb79-a882d30a89fd <at> cs.ucla.edu>
and subject line Re: bug#51482: dd with status=progress does not update its output when the main writing is finished
has caused the debbugs.gnu.org bug report #51482,
regarding dd with status=progress does not update its output when the main writing is finished
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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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

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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.

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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

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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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