GNU bug report logs - #12626
Bug?: dd limited to <2G read size (2G-8K) on 64 bit machine?

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Message #25 received at 12626-done <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: Linda Walsh <coreutils <at> tlinx.org>, 12626-done <at> debbugs.gnu.org
Subject: Re: bug#12626: Bug?: dd limited to <2G read size (2G-8K) on 64 bit
	machine?
Date: Fri, 12 Oct 2012 15:37:15 +0100

On 10/12/2012 03:34 PM, Paul Eggert wrote:
> On 10/12/2012 02:14 AM, Pádraig Brady wrote:
>> if you specify ibs and obs seperately,
>> then you will get writes of the size you requested at least.
>
> Won't there be similar problems with the write system
> call too?  Perhaps not on Linda's system, but on other
> systems.  Once the buffer size exceeds 2 GB or so,
> things get pretty dicey in the wild, not due to any
> problem in dd itself, but due to the kernels or
> file systems that dd relies on.

True, but at least you'd get errors in that case.

cheers,
Pádraig.

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