Re: [Libvir] Network blocking issue

On Mon, Sep 17, 2007 at 03:49:37PM +0100, Richard W.M. Jones wrote: > Daniel Veillard wrote: >> Is there a configuration knob in the RPC layer to lower the >> timeout delay ? Some calls are slow, but we should not reach a 2mn >> timeout, that's very very long I think. > Migrations might take some time. > > In any case the RPC code just does 'sendto' followed by 'recvfrom'. > There is no timeout to adjust on the client side. > > Shuveb's problem is that TCP doesn't gracefully handle the case where > the ethernet cable is pulled out. There may be a socket option which > helps for this. That depends on your definition of graceful. Shuveb's definition is that he wants the connection to fail & give an error back to the app. My definition is that TCP should keep retrying until I plug the cable back in, so I don't get unneccessary failures if i'm just switching cables around. Likewise if there's temporary outages anywhere else in the link between the client & server.