On Wed, Mar 12, 2003 at 11:52:17AM -0800, Petro wrote: > I've got a couple of brand new boxes I'm trying to get LVM set up > properly on. > > These machines have 6 200GiB drives attached to a 3ware controller card, > for a total of 1,200,000,000,000 bytes of storage. later down you write you need speed. In that case i would suggest ditching the hardware raid, and use pure software raid, it is faster. I dont mind 3ware, i have dome myself, but my benchmarking revealed that software was faster. > I'm running kernel 2.4.18, with LVM version 1.0.3, and the lvmtools > version 1.0.1rc3-1 (long story, but upgrading is a path-of-last-resort). if you need snapshots, get 1.0.7 > Initially I had the drives set up as a single raid0 device, but doing a > pvcreate on it failed with a message that said something about "can't > get size". strange, linux should be able to handle 2T block devices. > So I set up 2 3 disk RAID0 devices, and did a vgcreate /dev/sda /dev/sdb. > > Now, one question I have is: > > Does this concatenate the devices, or does it interleave the > devices? IE do I have a stripe of stripes, or two stripes? that depends. You can stripe the lvm, but then you cant resize it. if you made a LV, then it would proberly just allokate all on one "disk", aka sda, and then on sdb. > Since I need the disk write rate of all 6 drives, I'm *REALLY* hoping > that it's interleaved. sorry... it is not interleaved. JonB ps: how big a partition do you need stripping for? Do you need the advanced LVM stuff, like resize, snapshot... _______________________________________________ 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/
