Re: Streaming replication and a disk full in primary

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>
Cc: Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Streaming replication and a disk full in primary
Date: 2010-04-17 01:47:46
Message-ID: z2n603c8f071004161847zd99a754dz63ff81bf37edbad9@mail.gmail.com
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On Thu, Apr 15, 2010 at 6:13 PM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Thu, Apr 15, 2010 at 2:54 AM, Heikki Linnakangas
> <heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
>> Robert Haas wrote:
>>> I've realized another problem with this patch.  standby_keep_segments
>>> only controls the number of segments that we keep around for purposes
>>> of streaming: it doesn't affect archiving at all.  And of course, a
>>> standby server based on archiving is every bit as much of a standby
>>> server as one that uses streaming replication.  So at a minimum, the
>>> name of this GUC is very confusing.
>>
>> Hmm, I guess streaming_keep_segments would be more accurate. Somehow
>> doesn't feel as good otherwise, though. Any other suggestions?
>
> I sort of feel like the correct description is something like
> num_extra_retained_wal_segments, but that's sort of long.  The actual
> behavior is not tied to streaming, although the use case is.

<thinks more>

How about wal_keep_segments?

...Robert

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