On Wed, Jun 25, 2003 at 11:46:34AM -0600, Andreas Dilger wrote: > On Jun 25, 2003 18:00 +0100, Stuart Fox wrote: > > I cant find information about the maximum volume group size in the current > > 2.4 series kernel. > > > > Id like to be able to join 2 1.75Tb raid arrays into 1 3.5Tb array. > > Is this possible? > > No, there is a limit of 2TB for all block devices in 2.4 kernels. With > 2.5, there is a "large block device" configure option that lets you have > larger block devices. There is apparently also a patch to support this > on 2.4 kernels, but AFAIK it is not very widely used/tested. The question was regarding volum goups, not logical volums. So, correct me if I'm wrong, but I think the answer is yes, you will be able to join 2 1.75 Tb volume groups into a single 3.5 Tb volum group, if only an apropriate extent-size was set on VG-creation. However, each Logical Volum in the Volum-Group need to be smaller than 2 TB. AFAIK the "large block device" feature in 2.5 does not enable > 2TB logical volumes - it only fixes the general block-device layer, md and the scsi-subsystem. At least that used to be the case - maybe someone knows if it has changed? -- Ragnar Kjørstad Zet.no _______________________________________________ linux-lvm mailing list linux-lvm@sistina.com http://lists.sistina.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
