On Mon, Jun 19, 2017 at 10:59:19PM -0400, Bruce Momjian wrote:
> On Tue, Jun 20, 2017 at 03:50:29AM +0300, Sergey Burladyan wrote:
> > 20 июн. 2017 г. 1:21 пользователь "Bruce Momjian" <bruce@momjian.us> написал:
> >
> >
> > We are saying that Log-Shipping should match "Latest checkpoint
> > location", but the WAL for that will not be sent to the standby, so it
> > will not match, but that is OK since the only thing in the non-shipped
> > WAL file is the checkpoint record. How should we modify the wording on
> > this?
> >
> >
> > I am afraid that without this checkpoint record standby cannot make
> > restartpoint
> > and without restartpoint it does not sync shared buffers into disk at
> > shutdown.
>
> Uh, as I understand it the rsync is going to copy the missing WAL file
> from the new master to the standby, right, and I think pg_controldata
> too, so it should be fine. Have you tested to see if it fails?
The point is that we are checking the "Latest checkpoint location" to
make sure all the WAL was replayed. We are never going to start the
old standby server. Rsync is going to copy the missing/changed files.
-- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB
http://enterprisedb.com
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