| From: | Jeff Davis <pgsql(at)j-davis(dot)com> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, Andres Freund <andres(at)2ndquadrant(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Jeff Janes <jeff(dot)janes(at)gmail(dot)com>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: corrupt pages detected by enabling checksums |
| Date: | 2013-05-06 21:04:24 |
| Message-ID: | 1367874264.7410.6.camel@sussancws0025 |
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| Lists: | pgsql-hackers |
On Mon, 2013-05-06 at 15:31 -0400, Robert Haas wrote:
> On Wed, May 1, 2013 at 3:04 PM, Jeff Davis <pgsql(at)j-davis(dot)com> wrote:
> > Regardless, you have a reasonable claim that my patch had effects that
> > were not necessary. I have attached a draft patch to remedy that. Only
> > rudimentary testing was done.
>
> This looks reasonable to me.
Can you please explain the scenario that loses many VM bits at once
during a crash, and results in a bunch of already-all-visible heap pages
being dirtied for no reason?
Regards,
Jeff Davis
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