diff -r won't recurse

[Jeffrey Altman]

On 4/4/2015 3:27 PM, lemkemch@t-online.de wrote:
>> Clutching at straws (note the identical serial number, does it confuse Cygwin?):
>>
>> 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
> 
> 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.
> 
> 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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