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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