[Postgres-xc-bugs] WARNING message when getting online backup from Datanode.

[Tomonari K. <kat...@po...>]

Hi, All

I'm testing online backup(PITR) on Postgres-XC 1.0.0.
And I have a problem.

The manual says bellow.
http://postgres-xc.sourceforge.net/docs/1_0/continuous-archiving.html
This section describes PITR for PostgreSQL.
Because Coordinator and Datanode of Postgres-XC are
essentially PostgreSQLserver, you can do PITR for
each Coordinator and Datanode manually.


But, it is a difference between vanilla PostgreSQL and Postgres-XC.
When I do online backup against Datanode, I get some "WARNING" messages.

[example]: Datanode is running with port 15432.
System Configuration:
---------------------
Architecture : x86_64

Operating Systems : RHEL 5.7 x86_64

Postgres-XC version : Postgres-XC 1.0

Compilers used : gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-51)
---------------------

Behabier:
---------------------
$ psql postgres -p 15432 -c "SELECT pg_start_backup('test');"
WARNING: Do not have a GTM snapshot available
WARNING: Do not have a GTM snapshot available
pg_start_backup
-----------------
0/6000020
(1 row)

$ psql postgres -p 15432 -c "SELECT pg_stop_backup();"
WARNING: Do not have a GTM snapshot available
WARNING: Do not have a GTM snapshot available
NOTICE: pg_stop_backup complete, all required WAL segments have been
archived
pg_stop_backup
----------------
0/60000A0
(1 row)
---------------------


Please tell me if it's ignorable WARNING or not.
And if I can not ignore the WARNING, do I have to
execute "pg_start/stop_backup"via "EXECUTE DIRECT" command ?
If so, the manual has to be revised soon.


regards,
----
Tomonari Katsumata