Hi, Here is a thread I started on linux-poweredge@xxxxxxxx, do you have an idea how to solve that problem? On Tue, Mar 11, 2008 at 03:06:11PM +0000, Tom Brown wrote: > > > > > I just got my shiny new PE 2900 and would like to use its 8 disks in > > JBOD mode. I tried deleting all disk groups on the bios config panel > > but no disks are detected from within Linux (grml64 2.6.23). > > > > What is the right way to configure the MegaRAID card for JBOD operation? > > create 8 RAID zero's I just tried transfering my 4 x 1TB sata raid5 array from a PE 840 to the PE 2900 and now this disks seem to have shrunk: - PE 840: pyrrhus:~# fdisk -l /dev/sda Disk /dev/sda: 1000.2 GB, 1000204886016 bytes 255 heads, 63 sectors/track, 121601 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x4605adf0 - PE 2900: zenon:~# fdisk -l /dev/sda Disk /dev/sda: 999.6 GB, 999653638144 bytes 255 heads, 63 sectors/track, 121534 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Disk identifier: 0x00000083 But they are the exact same models. And this prevents me from initializing the third raid5 array made from each disk's last partition. Fortunately the system partition is the second one. Here is the boot message: Mar 11 17:15:21 zenon kernel: md: md2 stopped. Mar 11 17:15:21 zenon kernel: attempt to access beyond end of device Mar 11 17:15:21 zenon kernel: sda: rw=0, want=1953519829, limit=1952448512 Mar 11 17:15:21 zenon kernel: printk: 330 messages suppressed. Mar 11 17:15:21 zenon kernel: Buffer I/O error on device sda3, logical block 1752707328 Is the Megaraid "raid0" mode eating up part of the disk's end? Thanks for any insight on that problem, -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
