On Tue, 1 Sep 2009 14:48:13 +0200, ESGLinux wrote > 2009/9/1 Kaloyan Kovachev <kkovachev@xxxxxxxxx> > On Tue, 1 Sep 2009 14:21:47 +0200, ESGLinux wrote > > > > > > > > > > > > > You should use one iscsi lun shared by both cluster nodes. You can mount a > GFS filesystem without locking (lock=nolock) with (correct me if I am wrong) > the node not being part of a cluster, but only in one node at a time. > > You can mount a GFS filesystem created for a certain cluster without having > the filesystem configured as a resource, the only requisite is that the nodes > mounting the filesystem have to be part of that certain cluster. > > > > > > If I have understand you ok, I need to create a cluster, for example, > MYCLUSTER, then create a resource of type GFS filesystem. After that I must > create 2 nodes in the cluster, access de iscsi lun from this nodes and finally > mount the gfs filesystem. > > > > With these I can share this directory between the nodes without the risk of > file corruption? > > > > Well, in the case I canґt use this approach, is there any way to do this? > > > > if you don't have shared storage, but you have local disks - you may use DRBD > instead of iSCSI. > > this looks interesting, any good manual about using DRBD? > There is a good documentation at http://www.drbd.org/ search for primary-primary mode and make sure the replication channels is the same as for the cluster communication to avoid split-brain and data corruption > About the cluster - you don't need to define any resources - > just have a cluster which is quorate to avoid data corruption while accessing > the GFS on DRBD > > > > ok, so I only need the cluster with the 2 nodes and the gfs filesystem formated, for example like this: > > gfs_mkfs -p lock_dlm -t MyCLUSTER:mydata -j 8 /dev/sda1 > When I have done this I can mount /dev/sda1 in both nodes as use it > [UTF-8?]isnВґt it? you should format and mount /dev/drbd0 which is made on top of /dev/sda1, not /dev/sda1 itself > Thanks, > ESG > > > > Thanks for your time, > > > > ESG > > > > > > > > Regards, > > Juanra > > > > > > > > -- > Linux-cluster mailing list > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster > -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
