Re: Proposal: Incremental Backup

From: Claudio Freire <klaussfreire(at)gmail(dot)com>
To: Marco Nenciarini <marco(dot)nenciarini(at)2ndquadrant(dot)it>
Cc: Robert Haas <robertmhaas(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Gabriele Bartolini <gabriele(dot)bartolini(at)2ndquadrant(dot)it>, desmodemone <desmodemone(at)gmail(dot)com>, Amit Kapila <amit(dot)kapila16(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Proposal: Incremental Backup
Date: 2014-08-12 13:25:21
Message-ID: CAGTBQpZnc9q7LGfieH40fii9hzC1TeCpabBqntJ-hwEfs9f+oA@mail.gmail.com
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On Tue, Aug 12, 2014 at 6:41 AM, Marco Nenciarini
<marco(dot)nenciarini(at)2ndquadrant(dot)it> wrote:
> To declared two files identical they must have same size,
> same mtime and same *checksum*.

Still not safe. Checksum collisions do happen, especially in big data sets.

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