On Fri, 2006-03-10 at 20:12 +0100, Tano Enzo wrote: > Hi, > > I have a cluster with 2 nodes RHEL 4 U3, my cluster not use GFS, I have > a ECM2 shared storage. I have some shared resource: ip address and file > system. Can I use the shared resource in my service more then one times? > For example I have a file system /mnt/san/web where more then one > services access to it. I have created 2 service Test and Test2 which use > the only file system as resource, but only Test use it, Test2 ignore it. You can not reference an IP or a regular "fs" (ext3, ext2, reiserfs, etc) multiple times, because mounting those types of file systems on two systems is an invitation for a corrupt file system. Similarly, bringing up a single IP on two separate systems ... well, generally does not work well ;) Currently, you can reuse: - clusterfs (i.e. GFS; could be extended for other cluster file systems though) - netfs (mounting a file system from an NFS server - locks + file system consistency is handled server-side) - nfsexport (Meta-resource which is a child of fs or clusterfs to help with creation of an NFS failover service) - nfsclient (Resource which describes a target of a failover NFS service... hostname, wildcard, etc.) - script (though this should be done with caution!) Reusing non-shareable resources causes some of the references to be ignored. If you want to see what rgmanager thinks about the resource tree, run: rg_test test /etc/cluster/cluster.conf 2>&1 | less It will tell you of problems it finds in the resource tree (like exceeding max reference counts for resources, etc.) -- Lon -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
