Dell Software RAID with Red Hat Enterprise Linux4 Manual de usuario descargar pdf (Pagina 9)

Software RAID with Red Hat Enterprise Linux 4 7

Adding the RAID Partitions Back Into the md Device

Next, add the partitions back into each RAID device.

To add partition sdb1 back into the md0 device and to rebuild the data on that partition,

use the following command:

mdadm –a /dev/md0 /dev/sdb1

While the partition is rebuilding, track the status by running the

watch

cat /proc/mdstat

command, which displays the status and percentage of rebuilding completed. The status is

displayed similar to the following:

md2 : active raid1 sdb3[2] sda3[0]

5116608 blocks [2/1] [U_][=>..............] recovery = 7.7%

(397888/5116608) finish=1.7mins

Once the rebuilding is finished,

watch

cat /proc/mdstat

shows the following output

for the example device:

md0 : active raid1] sda1[0] sdb1[1]

104320 blocks [2/2] [UU]

Use the

mdadm –a

command to add each partition back into its respective RAID device.

Once all the partitions have been added, run the GRUB commands discussed in “Preparing the

System for Drive Failure” to install GRUB on the MBR of the new disk. After this step,

the RAID configuration will be fully restored.

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Dell Software RAID with Red Hat Enterprise Linux4 Manual de usuario Pagina 9