Subject: Re: 9.5 beta pg_upgrade documentation
To: pgsql-general@postgresql.org
References: <55D789B5.7040308@squeakycode.net>
 <55D9DC9E.8080806@squeakycode.net> <20150901210904.GA27334@momjian.us>
 <55E63B1B.80603@squeakycode.net> <20150902000043.GB27334@momjian.us>
 <55E654EC.9020702@squeakycode.net>
From: Andy Colson <andy@squeakycode.net>
Message-ID: <55E65B0B.8070308@squeakycode.net>
Date: Tue, 1 Sep 2015 21:12:27 -0500
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On 09/01/2015 08:46 PM, Andy Colson wrote:
> On 09/01/2015 07:00 PM, Bruce Momjian wrote:
>> On Tue, Sep  1, 2015 at 06:56:11PM -0500, Andy Colson wrote:
>>>> I also added a mention that rsync, not pg_upgrade, will be run on the
>>>> standbys.  You can see all the results of the patch here:
>>>>
>>>>     http://momjian.us/pgsql_docs/pgupgrade.html
>>>>
>>>> Thanks.
>>>>
>>>
>>> Sweet, I'm glad I stopped where I did.  I think I'm safe to pick up at step f.  Which seemed to work ok.  But now we get to step g (run rsync).  I checked the rsync manual and don't see anything like this three directory argument thing you are trying to run.  Unless you want to use --link-dest.  In which case I think the cmd would be like:
>>>
>>> rsync --archive --delete --hard-links --size-only --link-dest=old_pgdata new_pgdata remote_dir
>>>
>>> I'm gonna try this now, will report back.
>>
>> No, you are copying "old_pgdata and new_pgdata" to remote_dir.
>>
>
> Ohhh... I'll try again.  (The method above (run from the standby) doesn't work well at all).
>
> -Andy
>
>

Yeah, much better:

postgres@test1:/pub$ rsync --archive --stats --delete --hard-links --size-only pg93 pg95 test2:/pub/

Number of files: 373,393 (reg: 373,340, dir: 53)
Number of created files: 186,779 (reg: 186,751, dir: 28)
Number of deleted files: 1 (reg: 1)
Number of regular files transferred: 1,480
Total file size: 201,329,799,433 bytes
Total transferred file size: 1,445,463,198 bytes
Literal data: 1,445,463,198 bytes
Matched data: 0 bytes
File list size: 7,208,811
File list generation time: 0.001 seconds
File list transfer time: 0.000 seconds
Total bytes sent: 1,458,717,642
Total bytes received: 5,629,388

sent 1,458,717,642 bytes received 5,629,388 bytes 8,956,250.95 bytes/sec
total size is 201,329,799,433 speedup is 137.49


test1 is the primary, and test2 the standby.  Both have /pub/pg93 and /pub/pg95
I copied over a recovery.conf and the standby started up.
I started pg95 on the primary and am running analyze now.  I'll copy over wal to the standby and continue testing.

Looks good so far!

Thanks,

-Andy


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