Moving the database from a filesystem to another

[Együd Csaba]

Hi All,
one of my customers has a Postgres 7.2.3 DB on an RH7.1 box. Running df it
seems that the DB is not on the appropriate filesystem.

/dev/md1 5040352 2562316 2221992 54% /
/dev/md0 100020 8989 85867 10% /boot
/dev/md2 28831612 9800 27357244 1% /data

I suppose md2 was planned for storing the database, but it is on md1
($PGDATA = /var/lib/pgsql/data). Am I right?

md1 is about fulling up in some months, so I think it should be a good idea
to move the store to md2. How can I do this?
Is it enough to copy/move the directory /var/lib/pgsql/data to eg.
/data/pgsql/data and set $PGDATA to that directory?

Thank you,
-- Együd Csaba
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[Doug McNaught]

Együd Csaba <cs*****@vnet.hu> writes:

md1 is about fulling up in some months, so I think it should be a good idea
to move the store to md2. How can I do this?
Is it enough to copy/move the directory /var/lib/pgsql/data to eg.
/data/pgsql/data and set $PGDATA to that directory?

Yes, this is pretty much all you need to do. Just make sure you
preserve the ownership and permissions when you copy the data over...

-Doug

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[Tom Lane]

=?iso-8859-2?Q?Egy=FCd_Csaba?= <cs*****@vnet.hu> writes:

Is it enough to copy/move the directory /var/lib/pgsql/data to eg.
/data/pgsql/data and set $PGDATA to that directory?

Yes. Shut down postmaster *before* starting the move, though.

regards, tom lane

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