unable to build mdadm raid 5

[malcomosx.chris]

hello

the uuid is in there and i have also followed the information at http://tldp.org/HOWTO/Software-RAID-HOWTO-5.html. i have also removed the mdadm.conf file and ran the reassemble command.

chris

[fjgaude]

Okay, can you show us what the mdadm.conf file has in it?

[doogy2004]

Here is a set of instructions that I created:

Create Raid Array with LVM2 Volume Inside

• Determine the Logical location of all drives to be included in array.
  sudo lshw -short | grep "/dev/"
• Zero all drives to be included in array
  sudo shred -vfz -n 0 /dev/sdd
• Restart Computer so that the kernel sees the changes.
• Format all drives to be included in array.
  sudo fdisk /dev/sdd
  
  • Delete all partitions from the drive.
  • Create a new primary partition with the default size (default is the entire disk).
  • Change partition type to "Linux raid auto"
  • Write Changes to Drive
  • Repeat for each disk that will be included in the array.
• Restart Computer so that the kernel sees the changes.
• Determine the Logical locations of all drives to be included in the array again to verify if any have changed.
• Create the Raid device (if you have a missing drive replace it with "missing")
  sudo mdadm --create --verbose /dev/md0 --level=5 --raid-devices=3 /dev/sdd1 /dev/sde1 /dev/sda1
• Wait for the array to build. You can check the progress with:
  sudo mdadm --detail /dev/md0
  cat /proc/mdstat
• Restart computer to confirm the Configuration.
  ls /dev/ | grep "md"
• Create physical volume.
  sudo pvcreate /dev/md0
• Create the volume group. Replace XXX with (Megabytes of array)/65,000, then round to next number (2,4,8,16,32,64,128,256,...).
  sudo vgcreate -s XXXM lvm-raid /dev/md0
• Create the logical volume.
  sudo lvcreate -l 100%VG lvm-raid -n lvm0
• Confirm creation of logical volume.
  sudo lvdisplay /dev/lvm-raid/lvm0
• Format the logical volume.
  sudo mkfs.ext3 /dev/lvm-raid/lvm0
• Mount the volume
  sudo mkdir /media/lvm0
  sudo mount /dev/lvm-raid/lvm0 /media/lvm0
• Confirm that the volume is mounted.
  df -h /media/lvm0

[malcomosx.chris]

Hello

thanks for the reply

I'll try your how to when i get a chance

Chris