Zdenek Kotala napsal(a):
<snip>
How it works:
When PLC module is loaded, then for each page which does not have native
page version conversion routine is called. Buffer is mark as a dirty and
upgraded page is inserted into WAL.
Unfortunately, this approach does not work between layout 3 and 4. It works only
for heap on platfrom with maxallign=4.
The main problem is that PageHeader has been extended to 24 bytes and it
requires reindexing, TOAST chunk resizing, converted tuples does not fit on page
on platform where maxallign=8.
I'm now working on offline conversion method.
Zdenek
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