Re: pgsql: Unite ReadBufferWithFork, ReadBufferWithStrategy, and
От | Simon Riggs |
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Тема | Re: pgsql: Unite ReadBufferWithFork, ReadBufferWithStrategy, and |
Дата | |
Msg-id | 1225485460.3971.618.camel@ebony.2ndQuadrant обсуждение исходный текст |
Ответ на | pgsql: Unite ReadBufferWithFork, ReadBufferWithStrategy, and (heikki@postgresql.org (Heikki Linnakangas)) |
Ответы |
Re: pgsql: Unite ReadBufferWithFork, ReadBufferWithStrategy,
and
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Список | pgsql-committers |
On Fri, 2008-10-31 at 15:05 +0000, Heikki Linnakangas wrote: > Log Message: > ----------- > Unite ReadBufferWithFork, ReadBufferWithStrategy, and ZeroOrReadBuffer > functions into one ReadBufferExtended function, that takes the strategy > and mode as argument. There's three modes, RBM_NORMAL which is the default > used by plain ReadBuffer(), RBM_ZERO, which replaces ZeroOrReadBuffer, and > a new mode RBM_ZERO_ON_ERROR, which allows callers to read corrupt pages > without throwing an error. The FSM needs the new mode to recover from > corrupt pages, which could happend if we crash after extending an FSM file, > and the new page is "torn". I thought you were adding the "read buffer only if in cache" option also? -- Simon Riggs www.2ndQuadrant.com PostgreSQL Training, Services and Support
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