Re: Command to reset entire PgSQL cluster?

On 2/10/2015 11:02 AM, Felipe Gasper wrote:
> On 2/10/15 12:57 PM, David G Johnston wrote:
>> Felipe Gasper wrote
>>> Is there a quick way to reset a PgSQL cluster to its pristine
>>> state--i.e., to what initdb gives but preserving configuration
>>> customizations?
>>
>> Not that I am aware of.
>>
>> If you describe your use-case then meaningful suggestions could be
>> offered.
>>
>
> We have a lot of code that tests interaction with a PgSQL cluster on
> the same server that has a live production cluster. To keep the
> testing environment separate from production, we create a PgSQL
> cluster in a temp directory then run tests against that.
>
> This, as you can imagine, is pretty expensive to set up each time …
> initdb is not fast! It would be nice if we could just create a single
> test PgSQL cluster then wipe it clean at the end of each test.

use a file system, like zfs, that supports snapshots. initdb the
first time, configure your system, then snapshot it. each successive
time, stop postgres, revert the snapshot, restart postgres.

--
john r pierce 37N 122W
somewhere on the middle of the left coast