That clears up a lot of my questions. Although, --assume-clean isn't doing what I'd like, I did some searches using the keyword, '--assume-clean'. That lead me back to the linux raid wiki. Apparently I lack the ability to read 'Initial Array Creation' the last time I was there. Thank you for the help. Majed B. wrote: > 1) No need to sync if both disks are new (or have no data). > That can be accomplished using: --assume-clean > > 2) It shouldn't be a problem. If you still can't force mdadm, use dd > (be very sure you're writing to the correct disks!!) > dd if=/dev/zero of=/dev/sdx bs=10M count=1 > > That will write 10MB of zeros to the disk. It should corrupt any > filesystem laying there. > > Remember to change the partition type to "FD" for RAID auto-detect. > > Create your filesystem on the array after you create it & that's it. > > On Fri, Nov 13, 2009 at 11:34 PM, Kurt Newman <kurt@xxxxxxxxx> wrote: >> My questions are as follows: >> >> 1) If you're creating a completely new array (e.g. raid-1) on new >> partitions that aren't formatted, do you still have to sync? I'm having >> difficulty finding information on why and when a sync is needed. I was >> under the impression a sync is only needed when there's existing >> information on one or more of the drives. >> >> 2) If there used to be information on each device, but has since been >> repartitioned, so that new partitions and a raid device can be >> created... is there any way to prevent mdadm from asking if you really >> want to create the array? Using `--force' doesn't seem to help. >> >> mdadm: /dev/sda1 appears to contain an ext2fs file system >> size=1464840K mtime=Fri Nov 13:04:09 2009 >> mdadm: /dev/sdb1 appears to contain an ext2fs file system >> size=1464840K mtime=Fri Nov 13:04:09 2009 >> Continue creating array? >> >> As a side note, there really isn't an existing ext3 fs on it, but there >> used to be. To re-use the device, I issued the following commands: >> > parted -s /dev/sda mklabel msdos >> > parted -s /dev/sda mkpart primary ext3 0 1500 >> >> -- >> 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 >> > > > -- 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
