VERITAS Volume Manager 3.5 Administrator's Guide (September 2004)

Chapter 2 87

When the kernel has passed control to the initial user procedure, the

VxVM conﬁguration daemon (vxconﬁgd) is started. vxconﬁgd reads the

conﬁguration of the volumes in the rootdg disk group and loads them

into the kernel. The temporary root and swap volumes are then

discarded. Further I/O for these volumes is performed using the VxVM

conﬁguration objects that were loaded into the kernel.

Setting up a VxVM Root Disk and Mirror

NOTE These procedures should be carried out at init level 1.

To set up a VxVM root disk and a bootable mirror of this disk, use the

vxcp_lvmroot utility. This command initializes a speciﬁed physical disk

as a VxVM root disk named rootdisk## (where ## is the ﬁrst number

starting at 01 that creates a unique disk name), copies the contents of

the volumes on the LVM root disk to the new VxVM root disk, optionally

creates a mirror of the VxVM root disk on another speciﬁed physical

disk, and make the VxVM root disk and its mirror (if any) bootable by

HP-UX.

The following example shows how to set up a VxVM root disk on the

physical disk c0t4d0:

# /etc/vx/bin/vxcp_lvmroot -v -b c0t4d0

NOTE The -b option to vxcp_lvmroot uses the setboot command to deﬁne

c0t4d0 as the primary boot device. If this option is not speciﬁed, the

primary boot device is not changed.

If the destination VxVM root disk is not big enough to accommodate the

contents of the LVM root disk, you can use the -R option to specify a

percentage by which to reduce the size of the ﬁle systems on the target

disk. (This takes advantage of the fact that most of these ﬁle systems are

usually nowhere near 100% full.) For example, to specify a size reduction

of 30%, the following command would be used:

# /etc/vx/bin/vxcp_lvmroot -R 30 -v -b c0t4d0

The verbose option, -v, is speciﬁed to give an indication of the progress of

the operation.