Replacing a failed drive in an md raid1/raid10: Difference between revisions

Revision as of 20:11, 2 July 2015

Check if the kernel already removed the faild drive from the arrays: # mdadm --detail /dev/md0
- If not, remove it by hand: # mdadm /dev/md0 --remove /dev/sda1
- If in an array a partition of the failed drive is not marked as faulty, before removing run # mdadm --manage /dev/md1 --fail /dev/sda2
Insert a new physical disk
Copy the partition table to the new drive from its mirror:
- For gpt partition table: sgdisk -R /dev/sda /dev/sdb (from sdb to sda)
  - sgdisk -G /dev/sdb

@@ Line 3: / Line 3: @@
 **If in an array a partition of the failed drive is not marked as faulty, before removing run <code># mdadm --manage /dev/md1 --fail /dev/sda2</code>
 *Insert a new physical disk
-*Copy the partition table to the new drive from its mirror: <code>sgdisk -R /dev/sda /dev/sdb</code> (from <code>sdb</code> to <code>sda</code>)
+*Copy the partition table to the new drive from its mirror:
+**For gpt partition table: <code>sgdisk -R /dev/sda /dev/sdb</code> (from <code>sdb</code> to <code>sda</code>)
+***<code>sgdisk -G /dev/sdb</code>
 [[Category: Linux]]