Re: block-level incremental backup

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От Andres Freund
Тема Re: block-level incremental backup
Дата
Msg-id 20190418170053.jja6qxrz465ipmzk@alap3.anarazel.de
обсуждение исходный текст
Ответ на Re: block-level incremental backup  (Bruce Momjian <bruce@momjian.us>)
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Hi,

On 2019-04-18 11:34:32 -0400, Bruce Momjian wrote:
> On Thu, Apr 18, 2019 at 05:32:57PM +0200, David Fetter wrote:
> > On Wed, Apr 17, 2019 at 11:57:35AM -0400, Bruce Momjian wrote:
> > > Also, instead of storing the file name and block number in the modblock
> > > file, using the database oid, relfilenode, and block number (3 int32
> > > values) should be sufficient.
> > 
> > Would doing it that way constrain the design of new table access
> > methods in some meaningful way?
> 
> I think these are the values used in WAL, so I assume table access
> methods already have to map to those, unless they use their own.
> I actually don't know.

I don't think it'd be a meaningful restriction. Given that we use those
for shared_buffer descriptors, WAL etc.

Greetings,

Andres Freund



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