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|Oracle Solaris Administration: Devices and File Systems Oracle Solaris 11 Information Library|
The best way to create ZFS storage pools is to use whole disks instead of disk slices because whole disks are easier to manage. The only time you need to use a disk slice is when the disk is intended for the ZFS root pool. This is a long-standing boot limitation. For non-root pools, use whole disks. When you create a pool with whole disks, an EFI label is applied. See the EFI disk label example below.
If you need to prepare a disk for use a root pool disk, create slice 0 that contains the entire disk capacity, as shown in the VTOC disk label example below.
Note - The format utility uses the term partition instead of slice.
You might need to display disk slice information if the disk is intended to be used for the ZFS root pool. It must also include a SMI label.
For more information, see How to Use Your Assigned Administrative Rights in Oracle Solaris Administration: Security Services.
A numbered list of disks is displayed.
Specify disk (enter its number):1
partition> q format> q
If the screen output shows that no slice sizes are assigned, the disk probably does not have slices.
Example 11-3 Displaying Disk Slice Information
# format Searching for disks...done Specify disk (enter its number):3 Selecting c2t3d0 format> partition partition> print Current partition table (c2t3d0): Total disk cylinders available: 14087 + 2 (reserved cylinders) Part Tag Flag Cylinders Size Blocks 0 root wm 0 - 14086 136.71GB (14087/0/0) 286698624 1 swap wu 0 0 (0/0/0) 0 2 backup wu 0 - 14086 136.71GB (14087/0/0) 286698624 3 unassigned wm 0 0 (0/0/0) 0 4 unassigned wm 0 0 (0/0/0) 0 5 unassigned wm 0 0 (0/0/0) 0 6 usr wm 0 0 (0/0/0) 0 7 unassigned wm 0 0 (0/0/0) 0 partition> q format> q
For a detailed description of the slice information in these examples, see Chapter 10, Managing Disks (Overview).
The following example shows the slice information for a disk with an EFI label.
# format Searching for disks...done Specify disk (enter its number): 3 selecting c2t3d0 [disk formatted] format> partition partition> print Current partition table (default): Total disk sectors available: 286722878 + 16384 (reserved sectors) Part Tag Flag First Sector Size Last Sector 0 usr wm 34 136.72GB 286722911 1 unassigned wm 0 0 0 2 unassigned wm 0 0 0 3 unassigned wm 0 0 0 4 unassigned wm 0 0 0 5 unassigned wm 0 0 0 6 unassigned wm 0 0 0 7 unassigned wm 0 0 0 8 reserved wm 286722912 8.00MB 286739295 partition> q format> q