Update FAQ with details about /matrix/postgres/data-auto-upgrade-backup

4 years ago · 3b5907d83d
parent fb28f59f8c
commit 3b5907d83d
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--- a/docs/faq.md
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@ -355,3 +355,9 @@ You can later restore these roughly like this:
 - start services (see [Starting the services](installing.md#starting-the-services))

 If your server's IP address has changed, you may need to [set up DNS](configuring-dns.md) again.
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+### What is this `/matrix/postgres/data-auto-upgrade-backup` directory that is taking up so much space?
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+When you [perform a major Postgres upgrade](maintenance-postgres.md#upgrading-postgresql), we save the the old data files in `/matrix/postgres/data-auto-upgrade-backup`, just so you could easily restore them should something have gone wrong.
+
+After verifying that everything still works after the Postgres upgrade, you can safely delete `/matrix/postgres/data-auto-upgrade-backup`