From: | Geoffrey <esoteric(at)3times25(dot)net> |
---|---|
To: | pgsql-admin(at)postgresql(dot)org |
Subject: | Re: read-only database on CD-ROM? |
Date: | 2005-03-26 21:25:06 |
Message-ID: | 4245D332.1090104@3times25.net |
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Lists: | pgsql-admin |
Tom Lane wrote:
> Dragan Matic <mlists(at)panforma(dot)co(dot)yu> writes:
>
>>Is it possible to set up a read-only database on external data carrier
>>such as CD-ROM or DVD?
>
>
> It's not really supported. I think you could make it work if you did
> VACUUM FREEZE in the database, and then CHECKPOINT, just before burning
> it on CD. You can *not* put a whole $PGDATA directory on CD, as the
> xlog and clog have to be writable; but you could put one database
> subdirectory there. (It would be a lot easier to use 8.0 and make the
> moved-out tree a tablespace, probably.)
What about making xlog and clog sym links?
>
> A big caveat is that I'm not sure the CD would work if attached to a
> different $PGDATA tree, as for instance after a reinstallation. It
> could definitely not be counted on to work across PG version upgrades.
> So all in all the answer is probably "not worth the trouble".
Oh, come on Tom, sounds like a fun thing to try.... :)
--
Until later, Geoffrey
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