Re: [Linux-cluster] linux-cluster

2012-10-02 Thread Parvez Shaikh
What kind of cluster is this - an academic project or production quality solution? If its former - go for manual fencing. You wont need fence device but failover wont be automatic If its later - yes you'll need fence device On Mon, Oct 1, 2012 at 10:15 PM, Rajagopal Swaminathan

Re: [Linux-cluster] linux-cluster

2012-10-02 Thread Parvez Shaikh
Hi Digimer, Could you please give me reference/case studies of problem about why manual fencing was dropped and how automated fencing is fixing those? Thanks, Parvez On Tue, Oct 2, 2012 at 7:08 PM, Digimer li...@alteeve.ca wrote: On 10/02/2012 04:00 AM, Parvez Shaikh wrote: What kind of

Re: [Linux-cluster] linux-cluster

2012-10-02 Thread Digimer
This talks about how manual fencing isn't actual fencing; https://fedorahosted.org/cluster/wiki/Fence There was a page where it was said that manual fencing was in no way supported, but I can't find it at the moment. The reason it is not safe is that an admin is likely to issue it in a

Re: [Linux-cluster] linux-cluster

2012-10-02 Thread Rajagopal Swaminathan
Greetings, On Tue, Oct 2, 2012 at 7:33 PM, Digimer li...@alteeve.ca wrote: The reason it is not safe is that an admin is likely to issue it in a panic while trying to get a hung cluster back online. If this happens without +1 +1 +1 first ensuring the peer node(s) is fenced, you can walk

Re: [Linux-cluster] Hi

2012-10-02 Thread Parvez Shaikh
A curious observation, there is a sudden surge of sending emails on private addresses rather than sending over a mailing list. Please send your doubts / questions on mailing list linux-cluster@redhat.com instead of addressing personally. Regarding configuration for manual fencing - I don't have