Chris Mavin wrote: > I have a running cluster but the gnbd export on the storage server is > exporting a logical volume rather then the raw device. > > It all seems to work fine but would exporting the raw device improve > performance or anything? If you're asking whether the use of a logical volume as opposed to a raw device makes any difference in performance, it depends on how the logical volume was set up. If the LV is spread over several physical devices, performance can be affected depending on whether the data is striped, mirrored or appended linearly. If a single device is simply being used as a "container" for the LV, the additional overhead may ever so slightly degrade performance (although the difference is usually negligible). The advantage of using a logical volume is of course that you can easily manipulate it, for example to add more physical storage space later. Cheers, -- Steve Maddison Sr. Unix/Linux Engineer Competa IT B.V. http://www.competa.com/ -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
