Hi,
In general, it's a really bad idea to run PostgreSQL (or any other
database) over file-level network storage like SMB/AFP/CIFS/NFS.
Block-level network storage like iSCSI is generally OK, depending on the
quality of the drivers in target and initiator.
What Craig says it is true and it might be worth reading the free
chapter about "Database Hardware" from Greg's book on high performance,
which you can download from
http://blog.2ndquadrant.com/en/2010/10/postgresql-90-high-performance.html
Before you do anything more, make a COMPLETE COPY of the entire data
directory, including the pg_clog, pg_xlog, etc directories as well as
the main data base storage. Put it somewhere safe and do not touch it
again, because it might be critical for recovery.
Yes, also in case you had any tablespace do not forget about them. But a
cold backup in this cases it is always a good thing.
Ciao,
Gabriele
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Gabriele Bartolini - 2ndQuadrant Italia
PostgreSQL Training, Services and Support
gabriele.bartolini@xxxxxxxxxxxxxx | www.2ndQuadrant.it
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