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209Creating and administering disk groups
Upgrading a disk group
becomes incompatible with earlier releases of VxVM that do not support the
new version.
Before the imported disk group is upgraded, no changes are made to the disk
group to prevent its use on the release from which it was imported until you
explicitly upgrade it to the current release.
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 is not a feature of the version from which the
disk group was imported results in an error message similar to this:
VxVM vxedit ERROR V-5-1-2829 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:
Table 4-1 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
4.0 110 20-110
4.1 120 20-120
5.0 140 20-140