Expanding Disk Sets
How to Add Disks to a Disk Set
Caution - Do not add disks larger than 1Tbyte to disk sets if you
expect to run the Solaris software with a 32–bit kernel or if you
expect to use a version of the Solaris OS prior to the Solaris
9 4/03 release. See Overview of Multi-Terabyte Support in Solaris Volume Manager for more information about multi-terabyte volume support in
Solaris Volume Manager.
Only disks that meet the following conditions can be added to a
disk set:
The disk must not be in use in a volume or hot spare pool.
The disk must not contain a state database replica.
The disk must not be currently mounted, swapped on, or otherwise opened for use by an application.
Before You Begin
Check Guidelines for Working With Disk Sets.
- To add disks to a disk set, use one of the following methods:
From the Enhanced Storage tool within the Solaris Management Console, open the Disk Sets node. Select the disk set that you want to modify. Then click the right mouse button and choose Properties. Select the Disks tab. Click Add Disk. Then follow the instructions in the wizard. For more information, see the online help.
To add disks to a disk set from the command line, use the following form of the metaset command:
# metaset -s diskset-name -a disk-name
- -s diskset-name
Specifies the name of a disk set on which the metaset command will work.
- -a
Adds disks to the named disk set.
- disk-name
Specifies the disks to add to the disk set. disk names are in the form cxtxdx. N The “sx” slice identifiers are not included when adding a disk to a disk set.
See the metaset(1M)man page for more information.
The first host to add a disk to a disk set becomes
the owner of the disk set.
Caution - Do not add a disk with data to a disk set. The
process of adding a disk with data to a disk set might repartition
the disk, destroying the data.
- Verify the status of the disk set and disks.
# metaset
Example 19-3 Adding a Disk to a Disk Set
# metaset -s blue -a c1t6d0
# metaset
Set name = blue, Set number = 1
Host Owner
host1 Yes
Drive Dbase
c1t6d0 Yes
In this example, the host name is host1. The shared disk set is
blue. Only the disk, c1t6d0, has been added to the disk set blue.
Optionally, you could add multiple disks at once by listing each disk on
the command line. For example, you could use the following command to
add two disks to the disk set simultaneously:
# metaset -s blue -a c1t6d0 c2t6d0
How to Add Another Host to a Disk Set
This procedure explains how to add another host to an existing disk set
that only has one host. Solaris Volume Manager supports up to four
hosts per disk set.
Before You Begin
Check Guidelines for Working With Disk Sets.
- To add a host to a disk set, use one of the following
methods:
From the Enhanced Storage tool within the Solaris Management Console, open the Disk Sets node and choose the disk set you want to modify. Select the disk set you want to modify. Then click the right mouse button , and choose Properties. Select the Hosts tab. Click Add Host. Then follow the instructions in the wizard. For more information, see the online help.
To add hosts to a disk set from the command line, use the following form of the metaset command:
# metaset -s diskset-name -a -h hostname
- -s diskset-name
Specifies the name of a disk set on which to add the host.
- -a
Adds the host to the named disk set.
- -h hostname
Specifies one or more host names to be added to the disk set. Adding the first host creates the disk set. The host name is the same name found in the /etc/nodename file.
See the metaset(1M) man page for more information.
- Verify that the host has been added to the disk set.
# metaset
Example 19-4 Adding Another Host to a Disk Set
# metaset -s blue -a -h host2
# metaset
Set name = blue, Set number = 1
Host Owner
host1 Yes
host2
Drive Dbase
c1t6d0 Yes
c2t6d0 Yes
This example shows the addition of the host, host2, to the disk set,
blue.
How to Create Solaris Volume Manager Components in a Disk Set
After you create a disk set, you can create volumes and hot
spare pools using the disks you added to the disk set. You can
use either the Enhanced Storage tool within the Solaris Management Console or the
command-line utilities.
- To create volumes or other Solaris Volume Manager components within a disk set,
use one of the following methods:
From the Enhanced Storage tool within the Solaris Management Console, open the Volumes, State Database Replicas, or Hot Spare Pools node. Choose Action⇒Create. Then follow the instructions in the wizard. For more information, see the online help.
Use the same command line utilities with the same basic syntax to create volumes, state database replicas, or hot spare pools. However, add -s disk-set immediately after the command for every command.
# command -s disk-set
Example 19-5 Creating Solaris Volume Manager Volumes in a Disk Set
The following example shows the creation of a mirror, d10, in the disk
set, blue. The mirror consists of submirrors (RAID-0 volumes), d11 and d12.
# metainit -s blue d11 1 1 c1t6d0s0
blue/d11: Concat/Stripe is setup
# metainit -s blue d12 1 1 c2t6d0s0
blue/d12: Concat/Stripe is setup
# metainit -s blue d10 -m d11
blue/d10: Mirror is setup
# metattach -s blue d10 d12
blue/d10: submirror blue/d12 is attached
# metastat -s blue
blue/d10: Mirror
Submirror 0: blue/d11
State: Okay
Submirror 1: blue/d12
State: Resyncing
Resync in progress: 0 % done
Pass: 1
Read option: roundrobin (default)
Write option: parallel (default)
Size: 17674902 blocks
blue/d11: Submirror of blue/d10
State: Okay
Size: 17674902 blocks
Stripe 0:
Device Start Block Dbase State Reloc Hot Spare
c1t6d0s0 0 No Okay
blue/d12: Submirror of blue/d10
State: Resyncing
Size: 17674902 blocks
Stripe 0:
Device Start Block Dbase State Reloc Hot Spare
c2t6d0s0 0 No Okay
