On 2015-12-09 21:03:47 +0900, Michael Paquier wrote:
> Oh, OK. I didn't read though your lines correctly. So you basically
> mean that we would look at the init files that are on disk, and check
> if they are empty. If they are, we simply use XLogReadBufferExtended
> to fetch the INIT_FORKNUM content and fill in another buffer for the
> MAIN_FORKNUM. More or less right?

We'd not just do so if they're empty, we'd just generally copy the file
via shared buffers, instead of copy_file(). But we'd get the file size
from the filesystem (which is fine, we make sure it is correct during

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