How to replace a failed root disk using Solaris Disk Manager

How to replace a failed root disk using Solaris Disk Manager

 

In this example, c0t0d0 and c0t1d0 are the root disks and they are mirrored using Solaris disk manager. The disk c0t0d0 failed and needs replacing. The failed disk c0t0d0 holds meta mirror d10,d11,d13,d14,d15 and d16.

 

Remove the mirrors from the failed disk

 

metadetach -f d0 d10

metadetach -f d1 d11

metadetach -f d3 d13

metadetach -f d4 d14

metadetach -f d5 d15

metadetach -f d6 d16

 

Clear the meta devices

 

metaclear d10

metaclear d11

metaclear d13

metaclear d14

metaclear d15

metaclear d16

metadb –i

 

Remove the failed disk from the meta db

 

metadb -d c0t0d0s7

metadb –i

 

Remove the disk from OS

 

cfgadm -c unconfigure c0::dsk/c0t0d0

 

Replace the failed disk, possibly by the vendor

 

Configure the new disk in the OS and create new devices

 

cfgadm -c configure c0::dsk/c0t0d0

devfsadm –C

 

Create the partitions same as the existing root disk c0t1d0

 

prtvtoc /dev/rdsk/c0t1d0s2|fmthard -s - /dev/rdsk/c0t0d0s2

 

Install the boot block and make it ready for OS

 

installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/c0t0d0s2

metadb -a -c 3 c0t0d0s7

metadb -i

Create the new meta devices on the partitions of replaced disk

 

metainit -f d10 1 1 c0t0d0s0

metainit -f d11 1 1 c0t0d0s1

metainit -f d13 1 1 c0t0d0s3

metainit -f d14 1 1 c0t0d0s4

metainit -f d15 1 1 c0t0d0s5

metainit -f d16 1 1 c0t0d0s6

 

Re establish the mirror

 

metattach d0 d10

metattach d1 d11

metattach d3 d13

metattach d4 d14

metattach d5 d15

metattach d6 d16