|From:||Bruce Momjian <bruce(at)momjian(dot)us>|
|To:||Alexey Klyukin <alexk(at)hintbits(dot)com>|
|Cc:||christian(dot)echerer(at)manroland-web(dot)com, András Váczi <avandras(at)gmail(dot)com>,"pgsql-admin(at)postgresql(dot)org" <pgsql-admin(at)postgresql(dot)org>|
|Subject:||Re: Missing timeline history file after execution of pg_upgrade|
|Views:||Raw Message | Whole Thread | Download mbox|
On Thu, May 14, 2015 at 10:35:29PM -0400, Bruce Momjian wrote:
> > Nevertheless, the question is should pg_upgrade move the timeline history file
> > from the old server to the new one, and, to be more specific, are
> > there any cases when
> > moving such file is not recommended?
> Sorry I am just getting to this --- you are right it is a bug. I was
> unaware that pg_upgrade passed the timeline from the old cluster, but it
> does so when setting the WAL starting address with pg_resetxlog -l,
> which includes the timeline as the first eight hex digits.
> I think there are two options:
> 1) force pg_resetxlog -l to pass timeline 1
> 2) create a WAL history file to match the old cluster's timeline (!= 1)
> I don't think we want to be doing #2, so I have developed the attached
> patch for #1, which I should backpatch to 9.4. Do we store the timeline
> in any user tables that might be transfered? Anywhere else?
Patch applied and backpatched through 9.0.
+ Everyone has their own god. +
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