Message-ID: <55956BCA.6000705@commandprompt.com>
Date: Thu, 02 Jul 2015 09:50:18 -0700
From: "Joshua D. Drake" <jd@commandprompt.com>
Organization: Command Prompt, Inc.
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To: Ray Stell <stellr@vt.edu>,
 "pgsql-admin@postgresql.org" <pgsql-admin@postgresql.org>
Subject: Re: pg_basebackup state?
References: <5595692B.1010602@vt.edu>
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On 07/02/2015 09:39 AM, Ray Stell wrote:
>
> I need help determining the state of the pg_basebackup command. This
> works command works on other hosts and I make a connection as recorded
> in the postmaster log:
>
> 2015-07-02 12:10:53 EDT,0,authentication LOG:  replication connection
> authorized: user=rep
>
> the process is running:
>  > ps -ef | grep pg_base
> pg     32600 11558  0 12:10 pts/1    00:00:00 pg_basebackup -D
> basebackup/ --xlog --format=t  -P -U rep
> pg     32601  1473  0 12:10 ?        00:00:00 postgres: wal sender
> process rep [local] sending backup "pg_basebackup base backup"
>
> but no data is written.  Looks like wal sender is hurt. max_wal_senders
> = 3, I wonder if this is the reason for the stall. How to eval if this
> is set to low?  Thanks.

It may be that pg_basebackup is waiting for a checkpoint to complete. 
Try adding -cfast.

JD


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