[lvs-users] LVS-DR and scp

Graeme Fowler graeme at graemef.net
Wed Dec 2 09:26:29 GMT 2009


On Tue, 2009-12-01 at 15:02 -0800, Scooter Morris wrote:
> I have a two-node LVS configuration that I'm using as a front-end 
> to a three-node cluster.  It works really well for ssh, http, https, 
> etc.   But, when a user tries to use scp to copy a large file or 
> directory to the cluster, it commonly stalls and doesn't complete.

OK...

> scp directly to any node of the cluster works fine, either from outside
> the network or from inside it.

OK...

> Things only crawl when using scp to go through the redirectors.  Here
> are the relevant parts of the configuration file:

That all looks sane enough.

Question: how long does it take before a stall occurs? If it's around
about 10 minutes... you should be able to see what I'm getting at there.

We might need you to do some tests while running tcpdump, to see where
the stall occurs.

Graeme





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