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Date:	Sat, 04 Apr 2015 21:51:42 -0400
From:	Jeffrey Altman <jaltman AT secure-endpoints DOT com>
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To:	cygwin AT cygwin DOT com
Subject:	Re: diff -r won't recurse
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On 4/4/2015 3:27 PM, lemkemch AT t-online DOT de wrote:
>> Clutching at straws (note the identical serial number, does it confuse C=
ygwin?):
>>
>> orion> /usr/lib/csih/getVolInfo.exe /g
>> Device Type        : 7
>> Characteristics    : 20
>> Volume Name        : <ND D (HDD)>
>> Serial Number      : 3357258338
> ...
>>
>> orion> /usr/lib/csih/getVolInfo.exe /d
>> Device Type        : 7
>> Characteristics    : 20
>> Volume Name        : <ND D (HDD)>
>> Serial Number      : 3357258338
>=20
> This was it.  I changed the Volume Serial Number with a Sysinternals tool
> (https://technet.microsoft.com/en-us/sysinternals/bb897436.aspx)
> and after a reboot diff now recurses into the directories in question.
>=20
> Now is this a Cygwin bug or am I doing something terribly unsupported?

The serial number is used by many tools to track the volumes that are
crossed by reparse points to ensure that a loop does not occur.  I
suspect that in this case the tool is concluding that the reparse point
is referring back to the same volume.

Jeffrey Altman



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