VERITAS Volume Manager 3.5 Migration Guide (August 2002)

Chapter 2, Converting LVM to VxVM

Final 24 July 2002 Examples

The following disk has been found in the vg08 volume group and will

be configured for conversion to a VxVM disk group.

c4t8d0

A new disk group dg08 will be created and the disk device c4t8d0

will be converted and added to the disk group with the disk

name dg0801.

The c4t8d0 disk has been configured for conversion.

The first stage of the conversion operation has completed

successfully. If you commit to the changes hereafter, the

system will attempt to unmount all of the associated file

systems, stop and export each Volume Group, and then attempt to

complete the conversion without having to reboot the system. If

we are unable to stop and export any of the Volume Groups, then

the conversion process will not be able to complete without a

reboot. You would then be given the choice to either abort the

conversion, or finish the conversion by rebooting the system.

The conversion process will update the /etc/fstab file so that

volume devices are used to mount the file systems on this disk

device. You will need to update any other references such as

backup scripts, databases, or manually created swap devices. If

you do not like the default names chosen for the corresponding

logical volumes, you may change these to whatever you like

using vxedit.

Second Stage Conversion Analysis of vg08

Analysis of vg08 found insufficient Private Space for conversion

SMALLEST VGRA space = 176

RESERVED space sectors = 78

PRIVATE SPACE/FREE sectors = 98

AVAILABLE sector space = 49

AVAILABLE sector bytes = 50176

RECORDS neededs to convert= 399

MAXIMUM records allowable = 392

The smallest disk in the Volume Group (vg08) does not have

sufficient private space for the conversion to succeed. There

is only enough private space for 392 VM Database records and

the conversion of Volume Group (vg08) would require enough

space to allow 399 VxVM Database records. This would roughly

translate to needing an additional 896 bytes available in the

private space. This can be accomplished by reducing the number

of volumes in the (vg08) Volume Group, and allowing that for