Using Slices in a ZFS Storage Pool
Disks can be labeled with a traditional Solaris VTOC (SMI) label when you create a storage pool with a disk slice.
For a bootable ZFS root pool, the disks in the pool must contain slices and must be labeled with an SMI label. The simplest configuration would be to put the entire disk capacity in slice 0 and use that slice for the root pool.
On a SPARC based system, a 72-Gbyte disk has 68 Gbytes of usable space located in slice 0 as shown in the following format output.
# format . . . Specify disk (enter its number): 4 selecting c1t1d0 partition> p Current partition table (original): Total disk cylinders available: 14087 + 2 (reserved cylinders) Part Tag Flag Cylinders Size Blocks 0 root wm 0 - 14086 68.35GB (14087/0/0) 143349312 1 unassigned wm 0 0 (0/0/0) 0 2 backup wm 0 - 14086 68.35GB (14087/0/0) 143349312 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 unassigned wm 0 0 (0/0/0) 0 7 unassigned wm 0 0 (0/0/0) 0 |
On a x86 based system, a 72–GByte disk has 68 GBytes of usable space located in slice 0 as shown in the following format output. A small amount of boot information is contained in slice 8. Slice 8 requires no administration and cannot be changed.
# format . . . selecting c1t0d0 partition> p Current partition table (original): Total disk cylinders available: 49779 + 2 (reserved cylinders) Part Tag Flag Cylinders Size Blocks 0 root wm 1 - 49778 68.36GB (49778/0/0) 143360640 1 unassigned wu 0 0 (0/0/0) 0 2 backup wm 0 - 49778 68.36GB (49779/0/0) 143363520 3 unassigned wu 0 0 (0/0/0) 0 4 unassigned wu 0 0 (0/0/0) 0 5 unassigned wu 0 0 (0/0/0) 0 6 unassigned wu 0 0 (0/0/0) 0 7 unassigned wu 0 0 (0/0/0) 0 8 boot wu 0 - 0 1.41MB (1/0/0) 2880 9 unassigned wu 0 0 (0/0/0) 0 |
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