Re: Index location patch for review

just change the work tablespace below to location and that is exactly
what this patch is trying to do.  You can think of the LOCATION and
INDEX_LOCATION provided to the create database command as the default
storage locations for these objects.  In the future, I want to enable
the DBA to specify LOCATIONS any object just like Oracle.  I am also
planning on a pg_locations table and "create location" command which
will do what the current initlocation script does and more.


Jim


> 
> I am very new to this mailinglist so I apologize if I start talking
early but
> I've been working as a sysadmin and that kind of problems for a long
while
> now and my suggestion is that it is a start but I think that we should
aim a
> little higher than this and use something more like the Oracle
approach
> instead. Where they introduce an abstraction layer in the form of a
> tablespace. And this tablespace is then referenced from the create
table or
> create index instead.
> eg:
> table -> tablespace -> path to physical storage
> index -> tablespace -> path to physical storage
> 
> Advantages:
> Changes can be done to storage whithout need to change create scripts
for db,
> tables and so on.
> Designers can specify in which tablespace tables/indexes should reside
based
> on usage.
> Sysadmins can work with tablespaces and change paths without changing
> anything in the database/table/index definitions.
> 
> The alternative is symlinks to distribute the load and that is not a
pretty
> sight dba-wise.
> 
> Hope you can bare with me on this, since I think it is an very
important
> issue.
> I'm unfortunately not a fast coder yet (but I'm getting faster :-) ).
But I
> could start writing a spec if someone is interrested.
> 
> Bruce Momjian wrote:
> 
> > > Hi all,
> > >
> > > Attached is a patch that adds support for specifying a location 
for
> > > indexes via the "create database" command.
> > >
> > > I believe this patch is complete, but it is my first .
> >
> > This patch allows index locations to be specified as different from
data
> > locations.  Is this a feature direction we want to go in?  Comments?
> >
> > --
> >   Bruce Momjian                        |  http://candle.pha.pa.us
> >   pgman@candle.pha.pa.us               |  (610) 853-3000
> >   +  If your life is a hard drive,     |  830 Blythe Avenue
> >   +  Christ can be your backup.        |  Drexel Hill, Pennsylvania
19026
> >
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