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

Chapter 2 89

with changes that you make to the VxVM root disk. See “Creating an

LVM Root Disk from a VxVM Root Disk” on page 89 for a description of

how to create a bootable LVM root disk from the VxVM root disk.

For more information, see the vxcp_lvmroot(1M), vxrootmir(1M),

vxdestroy_lvmroot(1M) and vxres_lvmroot (1M) manual pages.

Creating an LVM Root Disk from a VxVM Root Disk

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

In some circumstances, it may be necessary to boot the system from an

LVM root disk. If an LVM root disk is no longer available or an existing

LVM root disk is out-of-date, you can use the vxres_lvmroot command to

create an LVM root disk on a spare physical disk that is not currently

under LVM or VxVM control. The contents of the volumes on the existing

VxVM root disk are copied to the new LVM root disk, and the LVM disk

is then made bootable. This operation does not remove the VxVM root

disk or any mirrors of this disk, nor does it affect their bootability.

NOTE The target disk must be large enough to accommodate the volumes from

the VxVM root disk.

This example shows how to create an LVM root disk on physical disk

c0t1d0 after removing the existing LVM root disk conﬁguration from that

disk.

# /etc/vx/bin/vxdestroy_lvmroot -v c0t1d0

# /etc/vx/bin/vxres_lvmroot -v -b c0t1d0

The -b option to vxres_lvmroot sets c0t1d0 as the primary boot device.

As these operations can take some time, the verbose option, -v, is

speciﬁed to indicate how far the operation has progressed.

For more information, see the vxres_lvmroot (1M) manual page.