Re: Incomplete description of pg_start_backup?

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От Jeff Janes
Тема Re: Incomplete description of pg_start_backup?
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Msg-id CAMkU=1wShRyiysqoNOqEXrxDacJ9VzDGPRUfF2twRNX-iAwR4Q@mail.gmail.com
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Ответ на Re: Incomplete description of pg_start_backup?  (Dmitry Koterov <dmitry@koterov.ru>)
Ответы Re: Incomplete description of pg_start_backup?
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On Mon, May 13, 2013 at 4:31 PM, Dmitry Koterov <dmitry@koterov.ru> wrote:
Could you please provide a bit more detailed explanation on how it works? 

And how could postgres write at the middle of archiving files during an active pg_start_backup? if it could, here might be a case when a part of archived data file contains an overridden information "from the future",

The data files cannot contain information from the future.  If the backup is restored, it must be restored to the time of pg_stop_backup (at least), which means the data would at that point be from the past/present, not the future.

Cheers,

Jeff

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