Re: pg_upgrade and rsync

20 февр. 2015 г., в 18:21, Bruce Momjian <bruce@momjian.us> написал(а):

On Fri, Feb 20, 2015 at 09:45:08AM -0500, Bruce Momjian wrote:

#3 bothered me as well because it was not specific enough.  I like what
you've added to clarify the procedure.

Good.  It took me a while to understand why they have to be in sync ---
because we are using rsync in size-only-comparison mode, if they are not
in sync we might update some files whose sizes changed, but not others,
and the old slave would be broken.  The new slave is going to get all
new files or hard links for user files, so it would be fine, but we
should be able to fall back to the old slaves, and having them in sync
allows that.

Also, since there was concern about the instructions, I am thinking of
applying the patch only to head for 9.5, and then blog about it if
people want to test it.

--
 Bruce Momjian  <bruce@momjian.us>        http://momjian.us
 EnterpriseDB                             http://enterprisedb.com

 + Everyone has their own god. +


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