From: Brad Nicholson <bnichols@ca.afilias.info>
To: pgsql-performance@postgresql.org
Subject: Re: New wiki page on write reliability
Date: Thu, 21 Oct 2010 10:34:49 -0400
Message-ID: <4CC04F89.6020503@ca.afilias.info> (raw)
In-Reply-To: <4CC04945.7030100@2ndquadrant.com>
References: <4CC04945.7030100@2ndquadrant.com>
On 10-10-21 10:08 AM, Greg Smith wrote:
> Now that some of my recent writing has gone from NDA protected to
> public sample, I've added a new page to the PostgreSQL wiki that
> provides a good starting set of resources to learn about an ever
> popular topic here, how write cache problems can lead to database
> corruption: http://wiki.postgresql.org/wiki/Reliable_Writes
>
> Bruce also has a presentation he's been working on that adds pictures
> showing the flow of data through the various cache levels, to help
> people visualize the whole thing, that should get added into there
> once he's finished tweaking it.
>
> I'd like to get some feedback from the members of this list about
> what's still missing after this expanded data dump. Ultimately I'd
> like to get this page to be an authoritative enough resource that the
> "Reliability" section of the official documentation could point back
> to this as a recommendation for additional information. So much of
> this material requires singling out specific vendors and staying up to
> date with hardware changes, both things that the official docs are not
> a good place for.
>
Looks like a good start.
I think a warning turning fsync off, the dangers of async_commit, and
the potential problems with disabling full_page_writes might be worth
mentioning on this page, unless you want to leave that buried in the
attached references.
--
Brad Nicholson 416-673-4106
Database Administrator, Afilias Canada Corp.
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: bnichols@ca.afilias.info
Subject: Re: New wiki page on write reliability
In-Reply-To: <4CC04F89.6020503@ca.afilias.info>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox