Il 04/10/14 08:35, Michael Paquier ha scritto: > On Sat, Oct 4, 2014 at 12:31 AM, Marco Nenciarini > <marco.nenciar...@2ndquadrant.it> wrote: >> Compared to first version, we switched from a timestamp+checksum based >> approach to one based on LSN. > Cool. > >> This patch adds an option to pg_basebackup and to replication protocol >> BASE_BACKUP command to generate a backup_profile file. It is almost >> useless by itself, but it is the foundation on which we will build the >> file based incremental backup (and hopefully a block based incremental >> backup after it). > Hm. I am not convinced by the backup profile file. What's wrong with > having a client send only an LSN position to get a set of files (or > partial files filed with blocks) newer than the position given, and > have the client do all the rebuild analysis? >
The main problem I see is the following: how a client can detect a truncated or removed file? Regards, Marco -- Marco Nenciarini - 2ndQuadrant Italy PostgreSQL Training, Services and Support marco.nenciar...@2ndquadrant.it | www.2ndQuadrant.it
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