On 7 December 2011 22:38, Richard B. Pyne <rpyne@xxxxxxxxxxx> wrote: > Please forgive me if I ask stupid questions, I am fairly new to linux raid > and most of the documentation I can find is severely outdated and/or written > for someone who already understands linux raid. > > I have successfully built a set raid 6 array with 4 drives and have copied > my system partitions onto the raid drives. I then reboot with root=/dev/md0. > > Everything looks like it is working right up through: > > md/raid:md0 raid level 6 active with 4 out of 4 devices, algorithm 2 > md0: detected capacity change from 0 to 1000131788 > md: autorun DONE. > md0: unknown partition table > EXT3-fs (md0): error: couldn't mount because of unsupported optional > features > EXT2-fs (md0): error: couldn't mount because of unsupported optional > features > EXT4-fs (md0): mounted filesystem with ordered data mode. Opts: (null) > VFS: Mounted root (ext4 filesystem) readonly on device 9:0. > freeing unused kernel memory: 472k freed > > > at which point it just hangs. No more disk access, no more messages. > > > The system has 5 WD Caviar Black 500GB drives. I did the linux install on > the first drive and built the other 4 drives into the raid system, planning > to move everything (except the /boot partition) on to the raid array and > then repartition everything except the /boot partition on the first drive > and add it to the raid. > > I currently have md0 for / md1 for /home md2 for /usr md3 for /var and md4 > on which I plan on running lvm to allocate to other system needs. > > Any advice, insights and/or direction will be greatly appreciated. > > > -- > 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 So you created 1 RAID6 volume. That is now "1 RAID drive", i.e. md0. Did you create partitions on md0? Or did you make it a physical volume (PV) with LVM? -- 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
