Re: Postgresql 9.4 pg_upgrade issues

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On Tue, Nov 24, 2015 at 08:32:18PM +0000, Yogi Barot wrote:
> Hi,
> 
> I was able to manage upgrade testing with cluster which does not have plsh for now.
> 
> But I have another problem. All my data TB is in the tablespace in PGData directory, I did the upgrade using link method, now I got this warning.  
> 
> Upgrade Complete
> ----------------
> Optimizer statistics are not transferred by pg_upgrade so,
> once you start the new server, consider running:
>     analyze_new_cluster.sh
> 
> Could not create a script to delete the old cluster's data
> files because user-defined tablespaces exist in the old cluster
> directory.  The old cluster's contents must be deleted manually.
> 
> 1) Does This means , I can't delete old cluster data directory? Or I can delete it manually?

If you delete the old data directory, you will delete the old _and_
_new_ cluster tablespaces.

> 2) Deleting old data directory will effect any functionality of postgresql new cluster?

Yep, you can bet on that.  :-)

> 3) Also Need some clarification on link mode, what if I upgrade from 9.5. to future release using pg_upgarde link mode will still work on same data directory?

Yes, but I suggest you shut down your server and move those tablespaces
out of the data directory, update the pg_tblspc symlinks, and then
restart the server.

-- 
  Bruce Momjian  <bruce@xxxxxxxxxx>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

+ As you are, so once was I. As I am, so you will be. +
+ Roman grave inscription                             +


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