Re: Keeping Multiple Rsyncs Separate

2004-05-28 Thread Chris Shoemaker
On Thu, May 27, 2004 at 08:50:11PM -0700, Swarbrick Software wrote:
> I have noticed that if you run two rsyncs at once, they get confused and
> copy the files from one the wrong rsync thread. Apparently this is because
> of the ?Build List? that is made in ram. Two build lists stepping on each
> other. Does anyone know how to change the source so that the each build list
> in ram is kept separate?

Can you give the example command lines?  It is very unlikely to be any
confusion in RAM, but perhaps a complete bug report would shed some
light...

-chris
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Re: Keeping Multiple Rsyncs Separate

2004-05-28 Thread Tim Conway
They are kept seperate.  If one tried to use another's chunk of memory, 
it'd be a segfault.  To permit such interference (and potential 
coordination) would require using shared memory, and nobody wants to deal 
with that.  If you are, in fact, having one process modify memory 
belonging to another, that is a defect in your VMM.
If you have two rsyncs to the same location, results are indeterminate, 
since it's a race condition.  The above fact explains why they do not and 
can not coordinate.  Only a fool permits two uncoordinated processes to 
modify the same set of data at the same time.  Run one, then the other.

Tim Conway
Unix System Administration
Contractor - IBM Global Services
desk:3032734776
[EMAIL PROTECTED]






I have noticed that if you run two rsyncs at once, they get confused and
copy the files from one the wrong rsync thread. Apparently this is because
of the âBuild Listâ that is made in ram. Two build lists stepping on each
other. Does anyone know how to change the source so that the each build 
list
in ram is kept separate?

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Keeping Multiple Rsyncs Separate

2004-05-27 Thread Swarbrick Software
I have noticed that if you run two rsyncs at once, they get confused and
copy the files from one the wrong rsync thread. Apparently this is because
of the “Build List” that is made in ram. Two build lists stepping on each
other. Does anyone know how to change the source so that the each build list
in ram is kept separate?
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