Data directory transfert fails between PPC and x86

Hi,

I used to make synchrnoistation between data directories with Rsync cause
it's faster when synchronizing offline database than making a dump.

It works really nice between all the PowerPC we used, but it doesn't work
on x86 server (the postmaster refuses to start because the
PG_CONTROL_VERSION is completly different). I think that the problem come
 from the endianess of the data structure.

So, my question is, "Is there a way to make it works or am I obiged to use
dump files?"

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