Seagate ST39103LC User's Guide download pdf (Page 52)

42 SVA Path User’s Guide

Preparing the

Volume Group

Device files for each volume group on an HP 9000 system reside

in directories with names

/dev/vg*. The following example lists

the volume groups on an HP800 system running HP-UX 11.00

Two volume groups,

vg00 and vg01, already exist on this system.

To prepare to create a new volume group:

Create the device directory that will contain the logical volume,

using the next available volume group number. In this example,

the next volume group number is 2, so the group should be named

/dev/vg02:

# cd /dev

# mkdir vg02

Use mknod to create create a device file named group in the new

directory:

In the above example, the

mknod command has the following

arguments:

• the full pathname to the new device file group;

• the letter

c to indicate a character device file;

• the number

64, which is the major number for the driver that

manages volume groups;

# ls -l /dev/vg*

/dev/vg00:

total 0

crw-rw-rw- 1 rootroot 64 0x000000 Dec 23 15:23 group

brw-r-----1 root root 64 0x000001 Dec 23 15:23 lvol1

brw-r-----1 rootroot 64 0x000002 Dec 23 15:23 lvol2

brw-r-----1 root root 64 0x000003 Dec 23 15:23 lvol3

crw-r-----1 root root 64 0x000001 Dec 23 15:23 rlvol1

crw-r-----1 root root 64 0x000002 Dec 23 15:23 rlvol2

crw-r-----1 root root 64 0x000003 Dec 23 15:23 rlvol3

/dev/vg01:

total 0

crw-rw-rw- 1 root root 64 0x010000 Jan 11 14:15 group

brw-r-----1 root root 64 0x000001 Jan 23 15:23 lvol1

crw-r-----1 root root 64 0x000001 Jan 23 15:23 rlvol1

# mknod /dev/vg02/group c 64 0x020000

# ls -lg /dev/vg02

total 0

crw-rw-rw- 1 sys64 0x020000 May 18 15:51 group

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 67 68

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