People,

On 2011-11-26 09:46, Chris Travers wrote:
> On Fri, Nov 25, 2011 at 6:08 AM, David A. Bandel
> <[email protected]> wrote:
>> On Thu, Nov 24, 2011 at 18:11, Chris Travers 
>> <[email protected]> wrote:
>>
>> [snip]
>>
>>>
>>> Ok.  So with a server, my primary concern is that upgrading things 
>>> is
>>> always a somewhat risky process.  Basically, when you upgrade, you
>>> risk breaking things, so generally speaking you want to have longer
>>> terms of support and a more lazy upgrade cycle.  And there are a
>>> couple things about the Fedora upgrade process that are 
>>> particularly
>>> risky.  For example yum distrosync will upgrade major versions of
>>> PostgreSQL for you, meaning if you didn't dump your data first, 
>>> your
>>> PostgreSQL db is now unusable.
>>
>> I hope you're joking.  While a Debian upgrade is not the easiest 
>> thing
>> in the world (they do their best to make it so, though), at least 
>> this
>> is not an issue.  You run postgresql versions in parallel until you
>> finally get rid of the old one because the new one works properly 
>> for
>> you.
>
> I am not joking.  I always back up before an upgrade....
> fortunately....  but I have noticed this happen.


I do a nightly pg_dump (in text mode these days ie not natively 
compressed) and again just before the upgrade if necessary.  So I can 
just import back into the new DB.  I keep as many daily backups as my 
backup drive allows and only delete old days when space starts running 
short (but I still keep EOM backups).  It hasn't failed me so far but in 
this case I do not have to worry about having to upgrade from LSMB 1.2 
to 1.3 - my other PG stuff doesn't have the same issues I guess . .


>> I've gone through 8.4->9.0->9.1 (and many before I can't remember)
>> upgrades w/ no problem (personally I use testing, even for my own
>> servers).  With Debian, they leave both database versions running
>> until you've dealt with any upgrade issues.  So far, I've only had
>> one, that was when a contrib stored procedure I was using didn't 
>> make
>> it from 8.4->9.0 (but it appeared again in 9.1).
>
> That's the right way to do things.


Agreed.


Regards,

Phil.
-- 
Philip Rhoades

GPO Box 3411
Sydney NSW      2001
Australia
E-mail:  [email protected]

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