Обсуждение: pg_upgrade with --link then pg_basebackup for replication
Here is an odd question.
If one was to upgrade Postgres to 9.4 from 9.1 using the --link option, then setup replication using pg_basebackup, would the standby server preserve the hard links with the pg_basebackup or will -D /new/destination/data/dir be a clean unlinked version?
Afterwards, if failing over to standby then failing back, would that implement a non linked version back on the primary if specifying a new data directory as well ?
Thanks,
Jorge Torralba
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Jorge Torralba
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On Mon, Nov 2, 2015 at 04:39:02PM -0800, Jorge Torralba wrote: > Here is an odd question. > > If one was to upgrade Postgres to 9.4 from 9.1 using the --link option, then > setup replication using pg_basebackup, would the standby server preserve the > hard links with the pg_basebackup or will -D /new/destination/data/dir be a > clean unlinked version? I will be clean. If you want to upgrade the the standby to 9.4 without a new basebackup, see this blog entry: http://momjian.us/main/blogs/pgblog/2015.html#June_10_2015 > Afterwards, if failing over to standby then failing back, would that implement > a non linked version back on the primary if specifying a new data directory as > well ? The links are only created on the server you run pg_upgrade, meaning normally not on the standby. -- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + As you are, so once was I. As I am, so you will be. + + Roman grave inscription +