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Subject:	Re: borgbackup test fail on cygwin (only) - cygwin pipe issues?
To:	cygwin AT cygwin DOT com
References:	<8d66dac6-689d-972f-d06a-f4c1869b6b87 AT waldmann-edv DOT de> <6d5d6289-ea61-cd18-fb48-c5053f292e0f AT gmail DOT com> <dd6328f1-12ba-7faa-6d44-227986bb755b AT waldmann-edv DOT de>
From:	Thomas Waldmann <tw AT waldmann-edv DOT de>
Openpgp:	id=6D5BEF9ADD2075805747B70F9F88FB52FAF7B393
Message-ID:	<326b4885-182e-841c-8522-2ec48841c9a4@waldmann-edv.de>
Date:	Fri, 13 Jan 2017 20:07:49 +0100
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On 01/13/2017 07:18 PM, Thomas Waldmann wrote:
> It was a bug in our code that was triggered frequently by the small
> cygwin pipe buffer size of only 64kiB.
> 
> borgbackup fix/workaround see there:
> 
> https://github.com/borgbackup/borg/pull/2032
> 
> It (almost?) never happened on other OSes, due to their bigger buffers.

Hmm, the last phrase seems not to be the real reason why it worked
there, but rather that neither Linux nor *BSD ever do partial writes on
blocking pipes.

So, should cygwin also behave that ^^^ way on blocking pipes?


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