VERITAS Volume Manager 3.5 Administrator's Guide (September 2002)

Upgrading a Disk Group
134 VERITAS Volume Manager Administrator’s Guide
Until completion of the upgrade, the disk group can be used “as is” provided there is no
attempt to use the features of the current version. Attempts to use a feature of the current
version that isnot a featureof theversionfromwhich thediskgroupwas importedresults
in an error message similar to this:
vxvm:vxedit: ERROR: Disk group version doesn’t support feature
To use any of the new features, you must run the vxdg upgrade command to explicitly
upgrade the disk group to a version that supports those features.
All disk groups have a version number associated with them. VERITAS Volume Manager
releases support a specific set of disk group versions. VxVM can import and perform
operations on a disk group of that version. The operations are limited by what features
and operations the disk group version supports.
The table, “Disk Group Version Assignments,” summarizes the VERITAS Volume
Manager releases that introduce and support specific disk group versions:
Importing the disk group of a previous version on a VERITAS Volume Manager 3.5
system prevents the use of features introduced since that version was released. The table,
“Features Supported by Disk Group Versions,” summarizes the features that are
supported by disk group versions 20 through 90:
Disk Group Version Assignments
VxVM Release Introduces Disk Group Version Supports Disk Group Versions
1.2 10 10
1.3 15 15
2.0 20 20
2.2 30 30
2.3 40 40
2.5 50 50
3.0 60 20-40, 60
3.1 70 20-70
3.1.1 80 20-80
3.2, 3.5 90 20-90