Amanda-Users

Re: Backups fail on new client: too many dumper retry

2006-06-21 18:40:01
Subject: Re: Backups fail on new client: too many dumper retry
From: Charles Curley <charlescurley AT charlescurley DOT com>
To: Paul Bijnens <paul.bijnens AT xplanation DOT com>
Date: Wed, 21 Jun 2006 16:31:53 -0600
On Wed, Jun 21, 2006 at 10:24:49PM +0200, Paul Bijnens wrote:
> Charles Curley schreef:

> >
> >Nothing other than the problem I've already asked about & to which
> >I've gotten no answer: Is the client trying to connect to
> >0.0.0.0.50509? And if so, where is that set up?
> 
> 0.0.0.0 means the amandad process is listening on any interface
> (not only 127.0.0.1 or not only 192.169.0.1 etc.).

Thank you. that helps.

> 
> The normal conversation for "sendbackup" goes like this:
> The server sends a UDP packet "sendbackup" request, and the DLE that it
> wants to do, together with some options used, e.g. if it wants indexes
> generated too.
> The client then prepares two or three tcp-connections: one for data, for
> error messages (which also contains the "Total size" line), and, if
> needed, a connections transferring the indexes.
> The client responds with a UDP packet on which ports these TCP 
> connections will be listening.
> The server then needs to connect to each of these ports on the client.
> 
> And there is seems to fail.

Thank you.

> 
> As you said, you are using iptables, so problably the the packets are
> being blocked by iptables.
> 
> To solve:
> 
> 1. Easiest:  load iptables helper module ip_conntrack_amanda:
>       modprobe ip_conntrack_amanda
>    (which will inspect the conversation above and open those two or
>    three ports selectively as needed).

Thank you. That solved the problem. It never occured to me to look for
such a beast.

I'd have responded sooner, but I waited until I had four level 0
backups from the client completed in order to be sure.

-- 

Charles Curley                  /"\    ASCII Ribbon Campaign
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