Re: DRDB? - Mailing list pgsql-admin

From Tom Lane
Subject Re: DRDB?
Date
Msg-id 7211.1119883882@sss.pgh.pa.us
Whole thread Raw
In response to Re: DRDB?  ("Magnus Hagander" <mha@sollentuna.net>)
List pgsql-admin
"Magnus Hagander" <mha@sollentuna.net> writes:
>> I have not probed further than the site's top page, but
>> unless DRBD offers some pretty strong guarantees about
>> physical write order on the master being duplicated on the
>> slave, it won't work reliably for Postgres.

> From what I've heard, it does guarantee this. I think it requires you to
> put all your stuff on the same DRBD device (no special device for WAL).

That would seem pretty likely --- I don't see how a block-level driver
could synchronize operations occuring on different devices.

            regards, tom lane

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