Hi Michael,
On 12/12/17 6:08 PM, Michael Paquier wrote:
If the forks are written out of order (i.e. main before init), which is
definitely possible, then I think worst case is some files will be backed up
that don't need to be. The main fork is unlikely to be very large at that
point so it doesn't seem like a big deal.
As far as I recall the init forks are logged before the main forks. I
don't think that we should rely on that assumption though to be always
satisfied.
Indeed, nothing is sure until a checkpoint. Until then we must assume
writes are random.
Well, I would be happy if you had a look!
You can count me in. I think that this patch has value for some
dedicated workloads.
Thanks!
It is a waste to backup stuff that will be
removed at recovery anyway.
It also causes confusion when the recovered database is smaller than the
backup. I can't tell you how many times I have answered this question...
--
-David
da...@pgmasters.net
