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 If an LVM root disk is no longer available or an existing LVM root disk is out-of-date, you can use the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.
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
-b option to
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.
vxres_lvmroot (1M) manual page.