Re: finding changed blocks using WAL scanning
От | Tomas Vondra |
---|---|
Тема | Re: finding changed blocks using WAL scanning |
Дата | |
Msg-id | 20190422230718.to3fei6dkeppm3zx@development обсуждение исходный текст |
Ответ на | Re: finding changed blocks using WAL scanning (Bruce Momjian <bruce@momjian.us>) |
Список | pgsql-hackers |
On Mon, Apr 22, 2019 at 01:15:49PM -0400, Bruce Momjian wrote: >On Mon, Apr 22, 2019 at 01:11:22PM -0400, Robert Haas wrote: >> On Mon, Apr 22, 2019 at 12:35 PM Bruce Momjian <bruce@momjian.us> wrote: >> > I assumed the modblock files would be stored in the WAL archive so some >> > external tools could generate incremental backups using just the WAL >> > files. I assumed they would also be sent to standby servers so >> > incremental backups could be done on standby servers too. >> >> Yeah, that's another possible approach. I am not sure what is best. > >I am thinking you need to allow any of these, and putting the WAL files >in pg_wal and having them streamed and archived gives that flexibility. > I agree - this would be quite useful for the prefetching use case I've already mentioned in my previous message. regards -- Tomas Vondra http://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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