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211Creating and administering disk groups
Upgrading a disk group
To list the version of a disk group, use this command:
# vxdg list dgname
You can also determine the disk group version by using the vxprint command
with the -l format option.
To upgrade a disk group to the highest version supported by the release of
VxVM that is currently running, use this command:
# vxdg upgrade dgname
By default, VxVM creates a disk group of the highest version supported by the
release. For example, Veritas Volume Manager 5.0 creates disk groups with
version 140.
It may sometimes be necessary to create a disk group for an older version. The
default disk group version for a disk group created on a system running Veritas
Volume Manager 5.0 is 140. Such a disk group cannot be imported on a system
running Veritas Volume Manager 4.1, as that release only supports up to version
120. Therefore, to create a disk group on a system running Veritas Volume
Manager 5.0 that can be imported by a system running Veritas Volume Manager
4.1, the disk group must be created with a version of 120 or less.
70 ■ Non-Persistent FastResync
■ Sequential DRL
■ Unrelocate
■ VVR Enhancements
20, 30, 40, 50, 60
60
■ Online Relayout
■ Safe RAID-5 Subdisk Moves
20, 30, 40
50
■ SRVM (now known as Veritas Volume
Replicator or VVR)
20, 30, 40
40
■ Hot-Relocation 20, 30
30
■ VxSmartSync Recovery Accelerator 20
20
■ Dirty Region Logging (DRL)
■ Disk Group Configuration Copy Limiting
■ Mirrored Volumes Logging
■ New-Style Stripes
■ RAID-5 Volumes
■ Recovery Checkpointing
Table 4-2 Features supported by disk group versions
Disk
group
version
New features supported Previous version
features supported