Re: Hot standby v5 patch - Databases created post backup remain inaccessible + replica SIGSEGV when coming out of standby

On Tue, 2008-11-04 at 18:33 +1300, Mark Kirkwood wrote:

> postgres=# \l
> List of databases
> Name | Owner | Encoding | Collation | Ctype | Access
> Privileges
> -----------+----------+-----------+-----------+-------+-------------------------------------
> bench | postgres | SQL_ASCII | C | C |
> postgres | postgres | SQL_ASCII | C | C |
> template0 | postgres | SQL_ASCII | C | C |
> {=c/postgres,postgres=CTc/postgres}
> template1 | postgres | SQL_ASCII | C | C |
> {=c/postgres,postgres=CTc/postgres}
> (4 rows)
>
> postgres=# \c bench
> FATAL: database "bench" does not exist
> Previous connection kept

CREATE DATABASE didn't trigger the db flat file update, code for which
existed and was triggered in the cases when a transaction would normally
rebuild the flat files. Simple fix, but stupid oversight.

Spotted another problem which is that BuildFlatFile may not be built
consistently if a rebuild is triggered prior to us reaching the recovery
consistency point. This is fixed by forcing a rebuild of the flat files
when we hit the recovery point.

Both one line changes, but I'll go looking for other issues there.

--
Simon Riggs www.2ndQuadrant.com
PostgreSQL Training, Services and Support