> There seems to be an unstated assumption here that there is one > virtual IP per exported filesystem. Is that true? This is the normal case for such HA services. There may actually be a single IP address covering multiple filesystems and/or NFS exports. > I think that maybe the right thing to do is *not* drop the locks on a > particular filesystem, but to drop the locks made to a particular > virtual IP. For filesystems such as ext2 or xfs, you unmount the filesystem on the current server and mount it on the new server when doing a failover. In this case, you have to be able to get rid of all the locks first and you do that for the entire filesystem. For a cluster filesystem such as cxfs, you don't actually unmount the filesystem, so you really need the per-IP address approach. > If I want to force-unmount a filesystem, I need to unexport it, and I > need to kill all the locks. Currently you can only remove locks from > all filesystems, which might not be ideal. This is definitely less than ideal. This will force notification and reclaim for all exported filesystems. This can be a significant problem. jmy@xxxxxxx 650 933 3124 Why is there a snake in my Coke? -- Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
