Re: PiTR and other architectures....

Jeff Davis wrote:
> On Tue, 2008-12-02 at 16:21 +0200, Heikki Linnakangas wrote:
>   
>> initdb on one platform, copy the data directory over to the other 
>> system, and try to start postmaster. It will complain if the on-disk 
>> format is not compatible.
>>
>> You can also run pg_controlinfo on both systems, and compare the 
>> results. If the "Maximum data alignment", and all the values below it in 
>> the pg_controlinfo output match, the formats are compatible.
>>     
>
> I don't think these things will work for all differences that could be
> problematic. For instance, a GNU system has a different collation for
> the en_US locale than an OS X system. This means that the indexes built
> using en_US on one system can't be moved to the other.
>
> How would either of these tests be able to determine that the systems
> are incompatible?
>
>   

wow...that's a little scary. Sounds like there is no trustworthy test I
can run. Other than the case of collation differences, are there any
other kinds of problems that would not be detected by even a postmaster
restart?



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