Jonathan, I know GNBD is a choice, but I will not consider it in my study environment. Thank for you very much. Michael On 7/29/05, Jonathan E Brassow <jbrassow@xxxxxxxxxx> wrote: > > On Jul 28, 2005, at 9:18 PM, Q.L wrote: > > > So, is there any 8 ports brocade switch that support fencing agent? > > Pretty much all brocade switches are supported by the (included) > fence_brocade agent. > > > can Qlogic switch work? > > I think so. We have a fence_sanbox2 agent... not sure about all the > models it supports - perhaps all, perhaps one. Help, anyone? > > > If I use a switch without fencing agent, can I > > use a manual fencing way to get system work? > > Yes, but it will require manual intervention every time you have (or > test) a failure. > > > In fact, what I want to > > study is the Symmetric lock principle, especially at the time > > concurrent write/read to the storage pool from both nodes, without > > considering one point failure. > > If you had a third machine, you could use GNBD. The GNBD server would > be a SPOF, but if it's just for testing, it would be fine. GNBD would > turn your third box into a iSCSI-like device which has built in I/O > fencing support. > > brassow > > -- Linux-cluster@xxxxxxxxxx http://www.redhat.com/mailman/listinfo/linux-cluster
