Gluster users - Aug 2014 - adding bricks to replica volume causes client failure

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I'm testing the process of adding bricks.  I have a replica volume
with two bricks.  I mounted this volume on a client, and started
writing data.  I then added two more bricks to the volume.

This caused the client to complain pretty loudly.

Here's the output, plus some logging info:
https://gist.github.com/skpy/1fb1297815d0b02df326

SELinux is disabled on the servers and the client.

It's my understanding that adding bricks should Just Work(tm), but
this experience suggests otherwise.

Is there something I've overlooked?

Thanks!
Scott
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