[Sheepdog] Use a dedicate nic for sync and other questions

[MORITA Kazutaka]

At Mon, 5 Sep 2011 20:45:42 +0200,
Valerio Pachera wrote:
> 
> 2011/9/3 MORITA Kazutaka <morita.kazutaka at lab.ntt.co.jp>:
> > But if you run two sheeps daemon, the I/Os will be distributed over
> > two disks.  If we can specify a nic for each daemon, I think there is
> > no big difference between using RAID0 and running multiple sheeps.
> 
> You are right!
> And it's also better to run 2 sheep daemon instead of use a raid0
> because if one of the disks dies, I lose only the chunks on that disks
> and not both like it would happen on raid0. So less time needed to
> sync the lost chunks.
> 
> > I think it is a good idea to support specifying interfaces used for
> > normal I/Os and object recovery.  For example:
> > $ sheep /store_1 --nic io:eth0 --nic sync:eth1
> > $ sheep /store_2 --nic io:eth2 --nic sync:eth3
> 
> I do not have clear what you mean with normal I/0.

Sorry, I meant the I/Os from VMs.

Thanks,

Kazutaka