[sheepdog-users] dog node recovery and node with single nic

[Liu Yuan]

On Mon, Nov 11, 2013 at 03:47:57PM +0100, Valerio Pachera wrote:
> 2013/11/11 Liu Yuan <namei.unix at gmail.com>
> 
> >
> > How did you join the node with single nic?
> >
> 
> sheep -n /var/sheep,/mnt/sheep/dsk01
> 
> Its ip is 192.168.2.46 (eth0).
> Corosync it listening on that ip.
> 
> The other nodes have an ip in class 192.168.2.0/24 (eth0).
> Corosync is listening on these ip(s).
> Then a second ip (eth1) in class 192.168.10.0/24.
>   sheep -n /var/sheep /mnt/sheep/dsk01,/mnt/sheep/dsk02 \
>   -i host=192.168.10.X port=3333
> 
> Is this the case of using option -y, --myaddr ?
>   sheep -n /var/sheep,/mnt/sheep/dsk01 -myaddr 192.168.2.46

$ sheep -n /var/sheep,/mnt/sheep/dsk01 # is okay

Since other nodes use 192.168.10.x/24 to transfer data so the new node will
try firstly try use 192.168.10.x/24 to other nodes, which will fail and fall
back to non-io nic that use 192.168.2.0/24. When other nodes tries to connect
to this node, they will use 192.168.2.0/24.

So I think everything will be okay, but the performance for newly joined node
will be impaired.

I am thinking of adding a patch to remove fallback-every-time when single NIC
node tries to talk to others.

Thanks
Yuan