On Tue, Oct 19, 2010 at 2:48 AM, Isabella Ghiurea
<isabella.ghiurea@nrc-cnrc.gc.ca> wrote:
> I have some questions regarding hot standby + streaming replication (PG
> 9.0) : what is master/primary server behavior if archive_command fails
> due to archive directory off line/unavailable?
Unarchived WAL files continue to accumulate in pg_xlog directory while
the archive directory is unavailable. Then, if pg_xlog directory is
filled up, the PostgreSQL server causes the PANIC error.
> How about standby server behavior if restore command fails due to
> archive_master directory not available?
After restore_command fails, the standby tries to read WAL file from
its pg_xlog directory. And, if there is no WAL file to recover in pg_xlog,
the standby tries to connect to the master and read the streamed WAL files
from the master.
Regards,
--
Fujii Masao
NIPPON TELEGRAPH AND TELEPHONE CORPORATION
NTT Open Source Software Center
