Hi all, I am considering the built-in NFS functionality of Gluster to build a virtual server environment. The idea is to have 4 or 5 hosts (KVM or Xen) that all contain around 300GB of 15K rpm SAS storage in a RAID5 array. On each of the host servers I would install a VM with the Gluster Platform and expose all of this storage through NFS to my OpenQRM installation, which would then host all the other VM's on the same servers. An alternative idea is to have the storage boxes separate from the VM hosts, but the basic idea stays the same I think. Now from what I understand, the NFS storage that is exposed to the clients is approached through the management IP of the first Gluster Platform server. My biggest question is what exactly happens when the first storage node goes down. Does the platform offer some kind of VRRP setup that fails over the IP to one of the other nodes? Is the lock information preserved and how does this all work internally? Since I would be using KVM or Xen, it would in theory be possible to build the FUSE client on the host servers, though I am still in doubt on how OpenQRM will handle this. When choosing local storage, OpenQRM expects raw disks (I think) and creates LVM groups on these disks in order to allow snapshotting and backups. OpenQRM would also not know this is shared storage. Does anyone have some insight on a setup like this? Best regards, Koen
