On Sat May 26 2007, Bruno Wolff III wrote: > On Sat, May 26, 2007 at 02:22:21 -0400, > > Claude Jones <claude_jones@xxxxxxxxxxxxxx> wrote: > > Where are you guys getting this info. This is not to quarrel, but, my > > current > > The raid config on the disks is propietary. So you can't just move the > disks to another machine anwith different hardware and expect it to work. > Software raid is standard and can be used on any machine running a recent > linux. It can in theory be supported by other OS's, but I don't know if it > is. > Well, what I'm saying is, I created the RAID mirrors with BIOS utility. Also required, were Windows Drivers that had to be loaded when I installed the OS. Then, when I booted from a Gparted Linux disk, I was able to successfully see those mirrors. I think I loaded the dmraid driver when I booted into Gparted; I'm saying 'I think' because some issues came up today when I was continuing to futz with this system, and I couldn't seem to get the same result again. Also, trying to expand the partition on the mirror resulted in loss of all data on the RAID, and a corrupted mirror. I made backups of each step along the way, so it was frustrating, but not disastrous. I did some research on dmraid today, and found some articles on a Gentoo help page that used the exact same negative language in describing the motherboard based RAID systems, including the nVidia NForce series; what I'm gathering from all this, is that the more expensive hardware systems do all the configuration in their own hardware and present a RAID system to the OS, that just looks like an ordinary drive - that's a question? That doesn't seem to make sense either, to me, since I've messed around with some pretty expensive high end servers - our old Compaq file server for example, which originally listed for $30k, still used proprietary drivers to interact with the OS, and you had to have them - there were Linux drivers available, and I was able to access that machines RAID when it went down once, with a Linux rescue disk... > > experience directly contradicts, I think, several things being asserted > > in this thread..... > > There are a number of dmraid driver kernel modules, so you may have been > using on of those. > Yes, I think you are right - see above > > additional drivers for RAID, and I picked the Nvidia mirror drivers - but > > if the Linux Nvidia drivers can 'see' the mirrors I created in Windows, > > that would also seem to contradict some statements being made in this > > thread...no? > > Well I think it has been mentioned previously in this thread that having > raid partitions visible to both linux and windows on the same machine (dual > boot) is one of the (few) reasons to use cheap hardware raid controllers. -- Claude Jones Brunswick, MD, USA
