Re: [Linux-cluster] failing to grasp

2010-03-17 Thread Paul M. Dyer
Hi, I use a filesystem resource with an IP address to failover an NFS mount to different nodes in the cluster. The NFS mount is use as a single source of the executables, accessible from multiple App Servers. The one point of failure was the NFS mount. By providing an FS+IP as a resource,

Re: [Linux-cluster] failing to grasp

2010-03-15 Thread Michael @ Professional Edge LLC
I'm sure others can provide a much more in depth answer but in short... Not all "file systems" are cluster aware. Something like GFS can be active on all nodes at the same time; because it uses a lock manager that makes every node in your cluster "chat" with each other to determine who is writ

Re: [Linux-cluster] failing to grasp

2010-03-15 Thread Rajagopal Swaminathan
Greetings, On Tue, Mar 16, 2010 at 9:34 AM, Jonathan Horne wrote: > > what im not understanding is, whats the point of creating the > file system as a service? > what, is this also going to be passed back and forth between > hosts? Consider a customer who cannot afford Oracle RAC and chooses act

[Linux-cluster] failing to grasp

2010-03-15 Thread Jonathan Horne
ok, i can understand the usefulness of luci for creating clustered services. yes, create the IP, add the init script of the daemon you want to pass back and forth. i can build all that and it works fine. what im not understanding is, whats the point of creating the file system as a service? w