Chapter 12 Soft Partitions (Tasks)
This chapter provides information about performing tasks
that are associated with Solaris Volume Manager soft partitions. For information about
the concepts involved in these tasks, see Chapter 11, Soft Partitions (Overview).
Soft Partitions (Task Map)
The following task map identifies the procedures needed to manage Solaris Volume Manager
soft partitions.
Creating Soft Partitions
How to Create a Soft Partition
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Check the Background Information About Soft Partitions.
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Use one of the following methods to create a soft partition:
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From the Enhanced Storage tool within the Solaris Management Console, open the Volumes node. Choose Action->Create
Volume, then follow the instructions in the wizard. For more information,
see the online help.
-
To create a soft partition, use the following form
of the metainit command:
metainit [-s set] soft-partition -p [-e] component size
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-s is used to specify which set is
being used. If -s isn't specified, the local (default)
disk set is used.
-e is used to specify that the entire disk should be
reformatted to provide a slice 0, taking most of the disk, and a slice 7 of
a minimum of 4 Mbytes in size to contain a state database replica.
soft-partition is the name of the soft partition.
The name is of the form dnnn,
where nnn is a number in the range of 0 to 8192.
component is the disk, slice, or (logical)
volume from which to create the soft partition. All existing data
on the component is destroyed because the soft partition headers
are written at the beginning of the component.
size is the size of the soft partition, and
is specified as a number followed by one of the following:
See the following examples and the metainit(1M) man page for more information.
Example—Creating a Soft Partition
# metainit d20 -p c1t3d0s2 4g
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In this example, a 4 Gbyte soft partition called
d20 is created on
c1t3d0s2.
Example—Taking a Whole Disk for Soft Partitions
This example shows repartitioning disk c1t2d0, thus
destroying any data on that disk, and creating a new soft partition on slice
0. The command looks like the following:
metainit d7 -p -e c1t2d0 1G
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Maintaining Soft Partitions
Maintaining soft partitions is no different from maintaining other logical
volumes. The following outlines the procedure.
How to Check the Status of a Soft Partition
-
Read the Background Information About Soft Partitions.
-
Use one of the following methods to check the status of a soft partition:
-
From the Enhanced Storage tool within the Solaris Management Console, open the Volumes node. Choose the soft
partition you want to monitor, then choose Action->Properties, then follow
the instructions on screen. For more information, see the online help.
-
To view the existing configuration, use the following format
of the metastat command:
soft-partition is the name of the partition
you want to check.
See Viewing the Solaris Volume Manager Configuration for more information.
Example—Checking the Status of a Soft Partition
This example shows checking the status of soft partition d1, which includes two extents and is built on the RAID 1 volume d100.
# metastat d1
d1: soft partition
component: d100
state: OKAY
size: 42674285 blocks
Extent Start Block Block Count
0 10234 40674285
1 89377263 2000000
d100: Mirror
Submirror 0: d10
State: OKAY
Read option: roundrobin (default)
Write option: parallel (default)
Size: 426742857 blocks
d10: Submirror of d100
State: OKAY
Hot spare pool: hsp002
Size: 426742857 blocks
Stripe 0: (interlace: 32 blocks)
Device Start Block Dbase State Hot Spare
c3t3d0s0 0 No Okay
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How to Expand a Soft Partition
When no
other logical volumes have been built on a soft partition, you can add space
to the soft partition. Free space is located and used to extend the partition.
Existing data is not moved.
-
Read the Background Information About Soft Partitions.
-
Use one of the following methods to expand a soft partition:
-
From the Enhanced Storage tool within the Solaris Management Console, open the Volumes node. Choose the soft
partition you want to expand, then choose Action->Properties, then follow
the instructions on screen. For more information, see the online help.
-
To add space to a soft partition, use the following form of
the metattach command:
metattach [-s disk-set] soft-partition size
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disk-set is the name of the disk set in which
the soft partition exists.
soft-partition is the name of an existing
soft partition.
size is the amount of space to add.
Example—Expanding a Soft Partition
This example shows how you can attach space to a soft partition and
then expand the file system that sits on it while the soft partition is online
and mounted is online:
# mount /dev/md/dsk/d20 /home2
# metattach d20 10g
# growfs -M /home2 /dev/md/rdsk/d20
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How to Remove a Soft Partition
-
Read the Background Information About Soft Partitions.
-
Use one of the following methods to delete a soft partition:
-
From the Enhanced Storage tool within the Solaris Management Console, open the Volumes node. Choose the soft
partition you want to expand, then choose Action->Properties, then follow
the instructions on screen. For more information, see the online help.
-
To delete a soft partition, use one of the following forms
of the metaclear command:
metaclear [-s disk-set] component
metaclear [-s disk-set] -r soft-partition
metaclear [-s disk-set] -p component
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where:
-
disk-set is the disk set in which
the soft partition exists.
-
soft-partition is the soft partition
to delete.
-
r specifies to recursively delete
logical volumes, but not volumes on which others depend.
-
p specifies to purge all soft partitions
on the specified component, except those soft partitions that are open.
-
component is the component from
which to clear all of the soft partitions.
Example—Removing a Soft Partition
This example shows how to delete all soft partitions on c1t4d2s0.
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