Using LUNs on Hosts

SPARC

After the host detects the mapped LUNs, you can use raw devices to configure services, or create file systems on the LUNs.

In the Solaris SPARC system, you can create file systems using the drive letters, or use the system's volume management software to manage disks and then create file systems on the managed disks.

The following is an example of creating a file system using the drive letter:

bash-3.2# newfs /dev/rdsk/c8t4d1s2 

newfs: construct a new file system /dev/rdsk/c8t4d1s2: (y/n)? y

/dev/rdsk/c8t4d1s2:     8384640 sectors in 4367 cylinders of 30 tracks, 64 sectors

        4094.1MB in 86 cyl groups (51 c/g, 47.81MB/g, 6016 i/g)

super-block backups (for fsck -F ufs -o b=#) at:

 32, 98016, 196000, 293984, 391968, 489952, 587936, 685920, 783904, 881888,

 7442720, 7540704, 7638688, 7736672, 7834656, 7932640, 8030624, 8128608,

 8226592, 8324576

bash-3.2# 

bash-3.2# mount /dev/dsk/c8t4d1s2 /mountpoint/mnt1/

In the preceding command, a UFS file system is created on the c8t4d1 drive and then mounted to the /mountpoint/mnt1/ directory.

When creating a file system using a drive letter, you must add s2 to the end of the drive letter, where s indicates the disk segment and s2 indicates the entire disk.

x86

In the Solaris x86 system, you must create partitions on the LUNs before using them.

Run the fdisk command to create partitions. The following is an example:

bash-3.00# format -e

Searching for disks...done

AVAILABLE DISK SELECTIONS:

       0. c0t0d0 <DEFAULT cyl 35027 alt 2 hd 255 sec 63>

          /pci@0,0/pci8086,25e3@3/pci1028,1f0c@0/sd@0,0

       1. c0t1d0 <DEFAULT cyl 35537 alt 2 hd 255 sec 63>

          /pci@0,0/pci8086,25e3@3/pci1028,1f0c@0/sd@1,0

       2. c0t2d0 <DEFAULT cyl 2767 alt 2 hd 255 sec 63>

          /pci@0,0/pci8086,25e3@3/pci1028,1f0c@0/sd@2,0

       3. c4t60022A11000AFD57000370FB00000000d0 <DEFAULT cyl 1021 alt 2 hd 64 sec 32>

          /scsi_vhci/disk@g60022a11000afd57000370fb00000000

       4. c4t60022A11000AFD57000377C800000001d0 <DEFAULT cyl 1020 alt 2 hd 64 sec 32>

          /scsi_vhci/disk@g60022a11000afd57000377c800000001

       5. c4t60022A11000AFD57000557D700000002d0 <DEFAULT cyl 1021 alt 2 hd 64 sec 32>

          /scsi_vhci/disk@g60022a11000afd57000557d700000002

       6. c4t60022A11000AFD57000613A60000000Ad0 <DEFAULT cyl 13052 alt 2 hd 255 sec 63>

          /scsi_vhci/disk@g60022a11000afd57000613a60000000a

       7. c4t60022A11000AFD57000613D40000000Bd0 <DEFAULT cyl 13052 alt 2 hd 255 sec 63>

          /scsi_vhci/disk@g60022a11000afd57000613d40000000b

       8. c4t60022A11000AFD57000872C90000000Ed0 <DEFAULT cyl 1021 alt 2 hd 64 sec 32>

          /scsi_vhci/disk@g60022a11000afd57000872c90000000e

Specify disk (enter its number): 5

selecting c4t60022A11000AFD57000557D700000002d0

[disk formatted]

FORMAT MENU:

        disk       - select a disk

        type       - select (define) a disk type

        partition  - select (define) a partition table

        current    - describe the current disk

        format     - format and analyze the disk

        fdisk      - run the fdisk program

        repair     - repair a defective sector

        label      - write label to the disk

        analyze    - surface analysis

        defect     - defect list management

        backup     - search for backup labels

        verify     - read and display labels

        save       - save new disk/partition definitions

        inquiry    - show vendor, product and revision

        scsi       - independent SCSI mode selects

        cache      - enable, disable or query SCSI disk cache

        volname    - set 8-character volume name

        !<cmd>     - execute <cmd>, then return

        quit

format> fdisk

No fdisk table exists. The default partition for the disk is:

  a 100% "SOLARIS System" partition

Type "y" to accept the default partition,  otherwise type "n" to edit the

 partition table.

y

format> p

PARTITION MENU:

        0      - change `0' partition

        1      - change `1' partition

        2      - change `2' partition

        3      - change `3' partition

        4      - change `4' partition

        5      - change `5' partition

        6      - change `6' partition

        7      - change `7' partition

        9      - change `9' partition

        select - select a predefined table

        modify - modify a predefined partition table

        name - name the current table

        print  - display the current table

        label  - write partition map and label to the disk

        !<cmd> - execute <cmd>, then return

        quit

partition> p

Current partition table (original):

Total disk cylinders available: 1020 + 2 (reserved cylinders)

Part      Tag    Flag     Cylinders        Size            Blocks

  0 unassigned    wm       0               0         (0/0/0)          0

  1 unassigned    wm       0               0         (0/0/0)          0

  2     backup    wu       0 - 1019     1020.00MB    (1020/0/0) 2088960

  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

  8       boot    wu       0 -    0        1.00MB    (1/0/0)       2048

  9 unassigned    wm       0               0         (0/0/0)          0

partition>

For details on how to use the host's volume management software, see Appendix A Volume Management.

If you use multipathing software, see Configuring Multipathing in HyperMetro Scenarios or Configuring Multipathing in Non-HyperMetro Scenarios.