Apparently VxFS has issues with greater than 1 TB LUNs and Solaris doesn't see multiple LUNs on a device unless told to (at least sometimes).
Reconfiguring the Xserve RAID into four RAID 5 sets (3 disks each, two on each controller), for a usable space of 2 TB. This is because VxFS doesn't want to mkfs the large (1.1 TB) LUN. So that gives us 500 GB LUNs, but two on each Fibre Channel bus. Modifying /kernel/drv/ssd.conf (look for the itmpt entries) to add the multiple LUNs does the trick, followed by a rebuild of devices at boot time (boot -r).
Posted by Rowan Littell at February 25, 2004 11:57 AM