In Solaris 2.3 release and compatible versions, the format utility automatically configures SCSI disk drives even if that specific type of drive is not listed in the /etc/format.dat file. This feature enables you to format, slice, and label any disk driver compliant with SCSI-2 specification for disk device mode sense pages.
The following steps are involved in configuring a SCSI drive using autoconfiguration:
Shutting down the system
Attaching the SCSI disk drive to the system
Turning on the disk drive
Performing a reconfiguration boot
Using the format utility to automatically configure the SCSI disk drive
After the reconfiguration boot, invoke the format utility. The format utility will attempt to configure the disk and, if successful, alert the user that the disk was configured. See "How to Automatically Configure a SCSI Drive" for step-by-step instructions on configuring a SCSI disk drive automatically.
Here are the default slice rules that format uses to create the partition table.
Table 29-2 SCSI Disk Slice Rules
Disk Size |
Root File System |
Swap Slice |
---|---|---|
0 - 180 Mbytes |
16 Mbytes |
16 Mbytes |
180 Mbytes - 280 Mbytes |
16 Mbytes |
32 Mbytes |
280 Mbytes - 380 Mbytes |
24 Mbytes |
32 Mbytes |
380 Mbytes - 600 Mbytes |
32 Mbytes |
32 Mbytes |
600 Mbytes - 1.0 Gbytes |
32 Mbytes |
64 Mbytes |
1.0 Gbytes - 2.0 Gbytes |
64 Mbytes |
128 Mbytes |
More than 2.0 Gbytes |
128 Mbytes |
128 Mbytes |
In all cases, slice 6 (for the /usr file system) gets the remainder of the space on the disk.
Here's an example of a format-generated partition table for a 1.3-Gbyte SCSI disk drive.
Part Tag Flag Cylinders Size Blocks 0 root wm 0 - 96 64.41MB (97/0/0) 1 swap wu 97 - 289 128.16MB (193/0/0) 2 backup wu 0 - 1964 1.27GB (1965/0/0) 6 usr wm 290 - 1964 1.09GB (1675/0/0) |
See Chapter 32, The format Utility (Reference) for more information about using SCSI automatic configuration.
Become superuser.
Create the /reconfigure file that will be read when the system is booted.
# touch /reconfigure |
Shut down the system.
# shutdown -i0 -g30 -y |
-i0 |
Brings the system down to init state 0 (zero), the power-down state. |
-g30 |
Notifies logged-in users that they have n seconds before the system begins to shut down. |
-y |
Specifies the command should run without user intervention. |
The ok or > prompt is displayed after the operating environment is shut down.
Turn off power to the system and all external peripheral devices.
Make sure the disk you are adding has a different target number than the other devices on the system.
You will often find a small switch located at the back of the disk for this purpose.
Connect the disk to the system and check the physical connections.
Refer to the disk's hardware installation guide for installation details.
Turn on the power to all external peripherals.
Turn on the power to the system.
The system will boot and display the login prompt.
Login as superuser, invoke the format utility, and select the disk to be configured automatically.
# format Searching for disks...done c1t0d0: configured with capacity of 1002.09MB AVAILABLE DISK SELECTIONS: 0. c0t1d0 <SUN1.05 cyl 2036 alt 2 hd 14 sec 72> /iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000/sd@1,0 1. c0t3d0 <SUN1.05 cyl 2036 alt 2 hd 14 sec 72> /iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000/sd@3,0 Specify disk (enter its number): 1 |
Reply yes to the prompt to label the disk.
Replying y will cause the disk label to be generated and written to the disk by the autoconfiguration feature.
Disk not labeled. Label it now? y |
Verify the disk label with the verify command.
format> verify |
format> q |