VERITAS Volume Manager 3.5 Migration Guide (September 2004)

Chapter 2
Converting LVM to VxVM
Examples
26
Select Volume Groups to analyze :
[<pattern-list>,all,list,listvg,q,?] vg08
Name a new disk group [<group>,list,q,?] (default: dg08)
The following disk has been found in the vg08 volume group and will
be analyzed for VxVM conversion.
c4t8d0
To allow analysis, a new VxVM disk group, dg08, will be fabricated
and the disk device c4t8d0 will be added to the disk group with
the disk name dg0801.
The c4t8d0 disk has been configured for conversion.
The first stage of the Analysis process has completed successfully.
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 every volume
removed, the number of Database records required would be
reduced by three. This is only a rough approximation, however.
Hit RETURN to continue.
Example: converting LVM volume groups to VxVM disk groups
To convert LVM volume groups to VxVM disk groups:
# vxvmconvert
Volume Manager Support Operations
Menu: VolumeManager/LVM_Conversion
1 Analyze LVM Volume Groups for Conversion
2 Convert LVM Volume Groups to VxVM
3 Roll back from VxVM to LVM
list List disk information
listvgList LVM Volume Group information
? Display help about menu
?? Display help about the menuing system