GNU bug report logs - #41944
cp: default to --reflink=auto, revisted

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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#41944: closed (cp: default to --reflink=auto, revisted)
Date: Fri, 19 Jun 2020 05:40:02 +0000

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

Your message dated Thu, 18 Jun 2020 22:39:11 -0700
with message-id <b9d78a82-0d9d-b6bc-6b04-2afe36dfe0c4 <at> cs.ucla.edu>
and subject line Re: bug#41944: cp: default to --reflink=auto, revisted
has caused the debbugs.gnu.org bug report #41944,
regarding cp: default to --reflink=auto, revisted
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: Chris Murphy <lists <at> colorremedies.com>
To: bug-coreutils <at> gnu.org
Subject: cp: default to --reflink=auto, revisted
Date: Thu, 18 Jun 2020 19:54:38 -0600

Hi,

The most recent discussion I found about this:
https://lists.gnu.org/archive/html/bug-coreutils/2016-09/msg00015.html

It's definitely currently never.
https://github.com/coreutils/coreutils/blob/master/src/cp.c#L796

However for mv, it is used (which I understand it's a different thing,
the optimization for cp+rm makes even more sense than for cp alone).
https://github.com/coreutils/coreutils/blob/master/src/mv.c#L113

Thanks,

-- 
Chris Murphy

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From: Paul Eggert <eggert <at> cs.ucla.edu>
To: Chris Murphy <lists <at> colorremedies.com>, 41944-done <at> debbugs.gnu.org
Subject: Re: bug#41944: cp: default to --reflink=auto, revisted
Date: Thu, 18 Jun 2020 22:39:11 -0700

[Message part 4 (text/plain, inline)]

Thanks, I'd forgotten that. The performance improvement is long overdue, so I
installed the attached.

[0001-cp-default-to-COW.patch (text/x-patch, attachment)]

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