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Re: Cannot cancel the change of a tablespace

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Guillaume Lelarge <guillaume(at)lelarge(dot)info>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Bruce Momjian <bruce(at)momjian(dot)us>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Cannot cancel the change of a tablespace
Date: 2010-07-01 20:13:32
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Lists: pgsql-hackers
On Thu, Jul 1, 2010 at 12:11 PM, Guillaume Lelarge
<guillaume(at)lelarge(dot)info> wrote:
> Le 01/07/2010 17:54, Robert Haas a écrit :
>> On Thu, Jul 1, 2010 at 10:18 AM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>>> On Thu, Jul 1, 2010 at 5:30 AM, Guillaume Lelarge
>>> <guillaume(at)lelarge(dot)info> wrote:
>>>>>>> On Tue, Jun 29, 2010 at 9:42 PM, Bruce Momjian <bruce(at)momjian(dot)us> wrote:
>>>>>>>> So this is not something we want fixed for 9.0, as indicated by Simon?
>>>>>>>> I don't see the patch on the commit-fest page yet.
>>>> Finally, I added it to the next commit fest. Robert can work on it
>>>> before if he wants to (or has the time).
>>> I'd been avoiding working on this because Simon had said he was going
>>> to commit it, but I can pick it up.  I've committed and back-patched
>>> (to 8.0, as 7.4 does not have tablespaces) the fix for ALTER TABLE ..
>>> SET TABLESPACE.  I'll take a look at the rest of it as well.
>> It looks like we have two reasonable choices here:
>> - We could backpatch this only to 8.4, where ALTER DATABASE .. SET
>> TABLESPACE was introduced.
>> - Or, since this also makes it easier to interrupt CREATE DATABASE new
>> TEMPLATE = some_big_database, we could back-patch it all the way to
>> 8.1, which is the first release where we use copydir() rather than
>> invoking cp -r (except on Windows, where copydir() has always been
>> used, but releases < 8.2 aren't supported on Windows anyway).
>> Since I can't remember anyone complaining about difficulty
>> interrupting CREATE DATABASE, I'm inclined to go back only to 8.4, and
>> will do that a bit later.
> I agree that a backpatch to 8.4 seems enough.


Robert Haas
The Enterprise Postgres Company

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