Don, * Don Seiler (don@xxxxxxxxx) wrote: > Planning steps to upgrade our 9.2 DB to the latest stable 9.6 using > pg_upgrade. I've gone through the steps for a primary/standalone DB and > they work well. Looking into how then to upgrade the standby, the > documentation says that *the data_dir from the master should be rsync'ed to > each slave*. > > Is this truly the case? Having to copy all the data from the primary will > be a huge issue for our larger databases. I had hoped we'd just need to > upgrade the binaries, copy the old data dir to the new data dir, update > conf files as needed and turn it back on (similar to Oracle standby > upgrade). There is a method to avoid having to copy the data from the primary, but it requires using --link mode with pg_upgrade and it's a bit of an involved process that requires very carefully following the steps and doing additional validation. A discussion around exactly this is currenlty ongoing as to how we can improve the documentation on this method. You can find that discussion here: https://www.postgresql.org/message-id/flat/VisenaEmail.10.2b4049e43870bd16.15d898d696f%40tc7-visena#VisenaEmail.10.2b4049e43870bd16.15d898d696f@tc7-visena Thanks! Stephen
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