Chapter 33 SPARC: Adding a Disk (Tasks)

This chapter describes how to add a disk to a SPARC based system.

For information on the procedures associated with adding a disk to a SPARC based system, see SPARC: Adding a System Disk or a Secondary Disk (Task Map).

For overview information about disk management, see Chapter 31, Managing Disks (Overview). For step-by-step instructions on adding a disk to an IA based system, see Chapter 34, x86: Adding a Disk (Tasks).

SPARC: Adding a System Disk or a Secondary Disk (Task Map)

The following task map identifies the procedures for adding a disk to a SPARC based system.

SPARC: Adding a System Disk or a Secondary Disk

A system disk contains the root (/) or /usr file systems, or both. If the disk that contains either of these file systems becomes damaged, you have two ways to recover:

• You can reinstall the entire Solaris environment.

• Or, you can replace the system disk and restore your file systems from a backup medium.

A secondary disk does not contain the root (/) and /usr file systems. A secondary disk usually contains space for user files. You can add a secondary disk to a system for more disk space, or you can replace a damaged secondary disk. If you replace a secondary disk on a system, you can restore the old disk's data on the new disk.

SPARC: How to Connect a System Disk and Boot

This procedure assumes that the system is shut down.

1. Disconnect the damaged system disk from the system.

2. Make sure that 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.

3. Connect the replacement system disk to the system and check the physical connections.

   Refer to the disk's hardware installation guide for installation details.

4. Follow the instructions in the following table, depending on whether you are booting from a local Solaris CD or DVD or a remote Solaris CD or DVD from the network.

   Boot Type	Action
   From a Solaris CD or DVD in a local drive	1. Make sure the CD or DVD is in the drive.  2. Boot from the media to single-user mode:  ok boot cdrom -s
   From the network	Boot from the network to single-user mode:   ok boot net -s

   After a few minutes, the root prompt (#) is displayed.

Where to Go From Here

After you boot the system, you can create slices and a disk label on the disk. Go to SPARC: How to Create Disk Slices and Label a Disk.

SPARC: How to Connect a Secondary Disk and Boot

1. Become superuser or assume an equivalent role.

2. If the disk type is unsupported by the Solaris software, add the device driver for the disk by following the instructions included with the hardware.

   For information on creating a format.dat entry for the disk, see How to Create a format.dat Entry, if necessary.

3. Create the /reconfigure file that will be read when the system is booted.

   # touch /reconfigure

   The /reconfigure file causes the SunOS software to check for the presence of any newly installed peripheral devices when you power on or boot your system later.

4. Shut down the system.

   # shutdown -i0 -gn -y

   -i0	Changes to run level 0, the power-down state.
   -gn	Notifies logged-in users that they have n seconds before the system begins to shut down.
   -y	Specifies that the command should run without user intervention.

   The ok prompt is displayed after the operating environment is shut down.

5. Turn off the power to the system and all external peripheral devices.

6. Make sure that 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.

7. Connect the disk to the system and check the physical connections.

   Refer to the disk's hardware installation guide for installation details.

8. Turn on the power to all external peripherals.

9. Turn on the power to the system.

   The system boots and displays the login prompt.

Where to Go From Here

After you boot the system, you can create slices and a disk label on the disk. Go to SPARC: How to Create Disk Slices and Label a Disk.

SPARC: How to Create Disk Slices and Label a Disk

1. Become superuser or assume an equivalent role.

2. Invoke the format utility.

   # format

   A list of available disks is displayed. For more information, see format(1M).

3. Type the number of the disk that you want to repartition from the list displayed on your screen.

   Specify disk (enter its number): disk-number

   disk-number is the number of the disk that you want to repartition.

4. Select the partition menu.

   format> partition

5. Display the current partition (slice) table.

   partition> print

6. Start the modification process.

   partition> modify

7. Set the disk to all free hog.

   Choose base (enter number) [0]? 1

   For more information about the free hog slice, see Using the Free Hog Slice.

8. Create a new partition table by answering y when prompted to continue.

   Do you wish to continue creating a new partition table based on above table[yes]? y

9. Identify the free hog partition (slice) and the sizes of the slices when prompted.

   When adding a system disk, you must set up slices for:

   • root (slice 0) and swap (slice 1)

   • /usr (slice 6)

   After you identify the slices, the new partition table is displayed.

   For an example of creating disk slices, see SPARC: Example—Creating Disk Slices and Labeling a System Disk.

10. Make the displayed partition table the current partition table by answering y when asked.

    Okay to make this the current partition table[yes]? y

    If you do not want the current partition table and you want to change it, answer no and go to Step 6.

11. Name the partition table.

    Enter table name (remember quotes): "partition-name"

    partition-name is the name for the new partition table.

12. Label the disk with the new partition table after you have finished allocating slices on the new disk.

    Ready to label disk, continue? yes

13. Quit the partition menu.

    partition> q

14. Verify the disk label.

    format> verify

15. Exit the format menu.

    format> q

SPARC: Example—Creating Disk Slices and Labeling a System Disk

The following example shows the format utility being used to divide a 1-Gbyte disk into three slices: one slice for the root (/) file system, one slice for the swap area, and one slice for the /usr file system.

# format
Searching for disks...done
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): 0
selecting c0t1d0
[disk formatted]
format> partition
partition> print
partition> modify
Select partitioning base:
	0. Current partition table (original)
	1. All Free Hog
Choose base (enter number) [0]? 1
 
Part      Tag    Flag     Cylinders        Size            Blocks
  0       root    wm       0               0         (0/0/0)          0
  1       swap    wu       0               0         (0/0/0)          0
  2     backup    wu       0 - 2035     1002.09MB    (2036/0/0) 2052288
  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
Do you wish to continue creating a new partition
table based on above table[yes]? yes
Free Hog partition[6]? 6
Enter size of partition `0' [0b, 0c, 0.00mb]: 200mb
Enter size of partition `1' [0b, 0c, 0.00mb]: 200mb
Enter size of partition `3' [0b, 0c, 0.00mb]:
Enter size of partition `4' [0b, 0c, 0.00mb]:
Enter size of partition `6' [0b, 0c, 0.00mb]:
Enter size of partition `7' [0b, 0c, 0.00mb]:
 
 Part      Tag    Flag     Cylinders        Size            Blocks
  0       root    wm       0 -  406      200.32MB    (407/0/0)   410256
  1       swap    wu     407 -  813      200.32MB    (407/0/0)   410256
  2     backup    wu       0 - 2035     1002.09MB    (2036/0/0) 2052288
  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     814 - 2035      601.45MB    (1222/0/0) 1231776
  7 unassigned    wm       0               0         (0/0/0)          0
 
Okay to make this the current partition table[yes]? yes
Enter table name (remember quotes): "disk0"
Ready to label disk, continue? yes
partition> quit
format> verify
format> quit

SPARC: Example—Creating Disk Slices and Labeling a Secondary Disk

The following example shows the format utility being used to divide a 1-Gbyte disk into one slice for the /export/home file system.

# format
Searching for disks...done
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): 0
selecting c0t1d0
[disk formatted]
format> partition
partition> print
partition> modify
Select partitioning base:
	0. Current partition table (original)
	1. All Free Hog
Choose base (enter number) [0]? 1
 
Part      Tag    Flag     Cylinders        Size            Blocks
  0       root    wm       0               0         (0/0/0)          0
  1       swap    wu       0               0         (0/0/0)          0
  2     backup    wu       0 - 2035     1002.09MB    (2036/0/0) 2052288
  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
Do you wish to continue creating a new partition
table based on above table[yes]? y
Free Hog partition[6]? 7
Enter size of partition '0' [0b, 0c, 0.00mb, 0.00gb]: 
Enter size of partition '1' [0b, 0c, 0.00mb, 0.00gb]: 
Enter size of partition '3' [0b, 0c, 0.00mb, 0.00gb]: 
Enter size of partition '4' [0b, 0c, 0.00mb, 0.00gb]: 
Enter size of partition '5' [0b, 0c, 0.00mb, 0.00gb]: 
Enter size of partition '6' [0b, 0c, 0.00mb, 0.00gb]:
 Part      Tag    Flag     Cylinders        Size            Blocks
  0       root    wm       0               0         (0/0/0)          0
  1       swap    wu       0               0         (0/0/0)          0
  2     backup    wu       0 - 2035     1002.09MB    (2036/0/0) 2052288
  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 - 2035     1002.09MB    (2036/0/0) 2052288 
Okay to make this the current partition table[yes]? yes
Enter table name (remember quotes): "home"
Ready to label disk, continue? y
partition> q
format> verify
format> q
# 

Where to Go From Here

After you create disk slices and label the disk, you can create file systems on the disk. Go to SPARC: How to Create File Systems.

SPARC: How to Create File Systems

1. Become superuser or assume an equivalent role.

2. Create a file system for each slice.

   # newfs /dev/rdsk/cwtxdysz

   /dev/rdsk/cwtxdysx is the raw device for the file system to be created.

   For more information about the newfs command, see Chapter 38, Creating File Systems (Tasks) or newfs(1M).

3. Verify the new file system by mounting.

   # mount /dev/dsk/cwtxdysz /mnt # lslost+found

SPARC: Where to Go From Here

SPARC: How to Install a Boot Block on a System Disk

1. Become superuser or assume an equivalent role.

2. Install a boot block on the system disk.

   # installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/cwtxdys0

   /usr/platform/`uname -i`/lib/fs /ufs/bootblk	Is the boot block code.
   /dev/rdsk/cwtxdys0	Is the raw device of the root (/) file system.

   For more information, see installboot(1M).

3. Verify that the boot blocks are installed by rebooting the system to run level 3.

   # init 6

SPARC: Example—Installing a Boot Block on a System Disk

The following example shows how to install the boot block on a SPARCstation 10.

# installboot /usr/platform/sun4m/lib/fs/ufs/bootblk /dev/rdsk/c0t0d0s0