[OpenAFS] Version of du that doesn't traverse AFS mount points?

[Derrick Brashear]

On Wed, Aug 27, 2008 at 2:57 AM, Simon Wilkinson <sxw@inf.ed.ac.uk> wrote:
>
> On 27 Aug 2008, at 02:18, Chas Williams (CONTRACTOR) wrote:
>
>> In message
>> <F17752FC8F21B8428FF70A2DA2B2E24606990704BB@MERCMBX11.na.sas.com>,Mike Shaddock
>> writes:
>>>
>>> I'm looking for a version of du where the -x option (skip directories on
>>> different file systems) doesn't traverse an AFS mount poi
>>> nt.  Haven't been able to find anything via searching, so I thought I'd
>>> ask here.
>>
>> i have an interesting idea.  on linux this would be pretty easy.
>> after generic_fill_attr() we could encode the volumeid in the i_dev
>> field instead of the s_dev field from the superblock.  this should make
>> this work.  i cant think of anything it would break.
>
> Unless I'm missing something, this breaks anything that relies on stat's
> st_dev field to determine whether a file is in AFS or not. Filedrawers is
> one example, and I'm sure there are others.

I wanted to do something like this to make Finder happy on MacOS; The
side effects get exciting. I might have notes somewhere. I recommend
against it.