Re: How to compile with different MAXALIGN?

From experience I would say NEVER NEVER try and do a direct copy across
different platforms (Windows -> Linux.)
Someone may contradict me, but I think a dump/restore would be the way
to go.

What sort of size of data are we talking? You'll need to factor in the
time it takes to dump the data, the time it takes to transfer the dump
to your new machine, and the time it takes to restore it.

Andy.

Sean Murphy wrote:
> I'm in the process of moving a large database from an in-house Win32
> server to a co-located Ubuntu Linux server. The data's in constant use,
> so I can't really bring the server down for more than a half hour or so,
> and I'd like to go ahead and use a base backup + WAL restore strategy to
> sync the servers up before flipping the switch.
>
> After copying over my base backup and setting ACL appropriately, when I
> go to start the server on Linux it fails with a message in the log
> stating that the cluster (binary copy from the W32 server) is
> initialized MAXALIGN 8 and the server is compiled MAXALIGN 4. A search
> of the Docs tells me that I can compile the server with a different
> MAXALIGN, but the install docs don't give any indication how this is
> achieved. Is there a configure or gmake option I can feed, or do I need
> to change a line in one (or more) of the source files?
>
> Or is there a compelling reason (I'm absolutely ignorant here) to do a
> dump and restore instead of the binary copy because MAXALIGN 4 is better
> for performance/security/fill-in-the-blank?
>
> Or is a binary copy move from W to L hopeless even if this particular
> issue isn't?
>
> Thanks
> Sean
>
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