LinhNamVu^? - 30 Jan 2007

Setting up RAID on a Solaris 10 6/06 Machine

Install OS

Insert disks (make sure you have the right architecture (sparc,x86)) Install OS (to boot into selected media use STOP+A, then use

• boot cdrom

More detailed instructions from sun. Also keep in mind how you want to setup your partitions/disks.

Partitioning

If you want to just mirror the same partitions as installed the OS: Copy partition layout to other disks with

• prtvtoc /dev/rdsk/c#t#d#s# | fmthard -s - /dev/rdsk/c#t#d#s#

If you want to create you're own partition setup then create it on one of the empty disks To format a disk use:

• format

Then make sure the other disks you want in the RAID to have the same partition layout as the one you have

• prtvtoc /dev/rdsk/c#t#d#s# | fmthard -s - /dev/rdsk/c#t#d#s#

Setup RAID

Choose a naming convention of metadevices for RAID

• dXY (X = disk number in raid) (Y = raid number)

Create devices

• metainit -f d10 1 1 /dev/dsk/c#t#d#s#
• metainit -f d20 1 1 /dev/dsk/c#t#d#s#
• metainit -f d30 1 1 /dev/dsk/c#t#d#s#
• etc...

Create RAID device.This command will create the initial metadevice for our raid

• metainit -f d0 d10

Attach the first device

• metattach -f d0 d10 (note: there is one less 'a' in metattach)

The created metadevices will be located in /dev/md/dsk/DEVICE_NAME_HERE

If you are creating a metadevice for the partition that the systems boots off of then you'll need to edit /etc/vfstab and reboot the system and boot into the new metadevice settings. If not you can ignore this step.

• vi /etc/vfstab
• lockfs -fa
• init 6

Attach remaining devices

• metattach -f d0 d20
• metattach -f d0 d30
• etc...

If you want to be able to boot off the other disk if the first one fails then

• installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk  /dev/rdsk/c0t1d0s0
• setenv boot-device disk disk1
• nvstore
• boot disk1

Maintanence

You can see the status of the disks using metastat . If you want to see the progress of the syncing then use metastat -c . In the event one of the drives goes missing, that command will show you. Once you re-insert the new drive you can create it with the above steps and attach it. Running metastat will show that the drive needs maintanence and running metasync will tell it that it can start syncing again. metastat -c will now show the sync progress.