Re: Documentation on PITR still scarce
От | Joachim Wieland |
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Тема | Re: Documentation on PITR still scarce |
Дата | |
Msg-id | 20041107111528.GA30964@mcknight.de обсуждение исходный текст |
Ответ на | Re: Documentation on PITR still scarce (Simon Riggs <simon@2ndquadrant.com>) |
Ответы |
Re: Documentation on PITR still scarce
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Список | pgsql-hackers |
On Sat, Nov 06, 2004 at 07:17:29PM +0000, Simon Riggs wrote: > > > Once you have brought up a database in timeline N+1, you can't use it as > > > the base to recover to a point in timeline N because the data file > > > contents cannot be trusted to be identical to the way they were in > > > timeline N. > > You mean "in timeline N ... to a point in timeline N+1", don't you? > Specifically not. The point is: you can't go back in time. Recovery is a > rollforward operation, so you must start at an earlier point and > rollforwards from there. Ok, that seems to be pretty intuitive. But could one extend the recovery mechanism such that one can go from PIT t_0 to PIT t_1 with t_1 > t_0 without re-restoring the original backup? Joachim
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