Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1UHsOU-000578-2f for pgsql-docs@arkaria.postgresql.org; Tue, 19 Mar 2013 08:59:42 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.72) (envelope-from ) id 1UHsOT-0005R1-EN for pgsql-docs@arkaria.postgresql.org; Tue, 19 Mar 2013 08:59:41 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1UHsOS-0005Qw-V3 for pgsql-docs@postgresql.org; Tue, 19 Mar 2013 08:59:41 +0000 Received: from outmail149082.authsmtp.co.uk ([62.13.149.82]) by magus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1UHsOQ-0000No-Fn for pgsql-docs@postgresql.org; Tue, 19 Mar 2013 08:59:40 +0000 Received: from mail-c226.authsmtp.com (mail-c226.authsmtp.com [62.13.128.226]) by punt14.authsmtp.com (8.14.2/8.14.2/) with ESMTP id r2J8xb88091790 for ; Tue, 19 Mar 2013 08:59:37 GMT Received: from mail-ea0-f175.google.com (mail-ea0-f175.google.com [209.85.215.175]) (authenticated bits=0) by mail.authsmtp.com (8.14.2/8.14.2/) with ESMTP id r2J8xYtV026365 (version=TLSv1/SSLv3 cipher=RC4-SHA bits=128 verify=FAIL) for ; Tue, 19 Mar 2013 08:59:35 GMT Received: by mail-ea0-f175.google.com with SMTP id o10so99514eaj.6 for ; Tue, 19 Mar 2013 01:59:15 -0700 (PDT) MIME-Version: 1.0 X-Received: by 10.14.206.132 with SMTP id l4mr32060297eeo.38.1363683555833; Tue, 19 Mar 2013 01:59:15 -0700 (PDT) Received: by 10.14.133.81 with HTTP; Tue, 19 Mar 2013 01:59:15 -0700 (PDT) In-Reply-To: <1363654370.6734.8.camel@sussancws0025> References: <1363654370.6734.8.camel@sussancws0025> Date: Tue, 19 Mar 2013 08:59:15 +0000 Message-ID: Subject: Re: Comments on commit regarding checksums (2266db39) From: Simon Riggs To: Jeff Davis Cc: pgsql-docs@postgresql.org Content-Type: text/plain; charset=ISO-8859-1 X-Server-Quench: 52572542-9073-11e2-98a9-0025907ec6c5 X-AuthReport-Spam: If SPAM / abuse - report it at: http://www.authsmtp.com/abuse X-AuthRoute: OCdxZQATClZOTQEd DAteCiN5VAwpPBRK HVkIKg5MOFUSTAAU PkFRNXJLN0YASktU QCdXRQsWBxNwUHwI OkhObwVcYVpOVw9v WUJKRxxQFAx2CRkf BB8bTBh1chpDcHlv ZAggXApTFC0+E0Z/ RE1SECMEYGNgJmUd VUdacgdWbQpKeRxY a1EqVm4EaTQOe3pg RVJiZ288NmtUdTJv T1NFBlUXREsNAiV0 QBZKFjIqGEwZDz8+ IBU8Jl8aEw4aMkg5 MkA8XElQc0VIVFNS FRocQUcA X-Authentic-SMTP: 61633235383639.1020:706 X-AuthFastPath: 0 (Was 255) X-AuthSMTP-Origin: 209.85.215.175/587 X-AuthVirus-Status: No virus detected - but ensure you scan with your own anti-virus system. X-Pg-Spam-Score: -2.6 (--) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-docs Precedence: bulk Sender: pgsql-docs-owner@postgresql.org On 19 March 2013 00:52, Jeff Davis wrote: > 2PC state files actually are protected by CRC32 (see EndPrepare()), and > so is pg_control (which is not mentioned). > > If we want to be thorough, it might be worth mentioning that we expect > filesystem metadata to not be corrupted/lost, either. Added separate comments for each point. -- Simon Riggs http://www.2ndQuadrant.com/ PostgreSQL Development, 24x7 Support, Training & Services -- Sent via pgsql-docs mailing list (pgsql-docs@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-docs