Re: v0.93 Hammer release candidate released

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I forgot to mention a very important note for those running the v0.92 
development release and upgrading:

On Fri, 27 Feb 2015, Sage Weil wrote:
> Upgrading
> ---------

* If you are upgrading from v0.92, you must stop all OSD daemons and flush their
  journals (``ceph-osd -i NNN --flush-journal'') before upgrading.  There was
  a transaction encoding bug in v0.92 that broke compatibility.  Upgrading from
  v0.91 or anything earlier is safe.

> * No special restrictions when upgrading from firefly or giant

I know this has bitten a few of you already; I'm very sorry!  Following 
the procedure now should resolve it.

Thanks-
sage
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