Re: Multiple backends on a single physical database - Mailing list pgsql-admin

From Ragnar Kjørstad
Subject Re: Multiple backends on a single physical database
Date
Msg-id 20021012183424.M14731@vestdata.no
Whole thread Raw
In response to Re: Multiple backends on a single physical database  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Multiple backends on a single physical database
List pgsql-admin
On Sat, Oct 12, 2002 at 12:26:51PM -0400, Tom Lane wrote:
> Load testing is not the issue here; crash testing is.  Try pulling the
> power plug on your NFS box while the database is under load.  If you
> can do that repeatedly and not suffer database corruption, then maybe
> you have a safe setup.  Be sure to try the case of NFS crash immediately
> after a CHECKPOINT.


If pulling the plug causes database-corruption that proves that there is
something wrong with NFS-setup, but if it _doesn't_ cause
database-corruption that doesn't prove that it's safe - it could be that
you're just lucky.

This should be obvious, but I've seen too many people argument like
"I've tested it twice and it didn't break so it must be safe".



--
Ragnar Kjørstad
Big Storage

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