Veritas Volume Manager 5.0.1 Administrator's Guide, HP-UX 11i v3, First Edition, November 2009

Warning: Sparse log plexes are not valid. They must map the entire length of the
log. If increasing the log length makes any of the logs invalid, the operation is not
allowed. Also, if the volume is not active and is dirty (for example, if it has not
been shut down cleanly), you cannot change the log length. If you are decreasing
the log length, this feature avoids losing any of the log contents. If you are
increasing the log length, it avoids introducing random data into the logs.
Setting tags on volumes
Volume tags implement Storage Foundation's Dynamic Storage Tiering feature.
You can also apply tags to vsets using the same vxvm command syntax as shown
below.
See the Veritas File System Administrator’s Guide.
The following forms of the vxassist command let you do the following:
■ Set a named tag and optional tag value on a volume.
■ Replace a tag.
■ Remove a tag from a volume.
# vxassist [-g diskgroup] settag volume|vset tagname[=tagvalue]
# vxassist [-g diskgroup] replacetag volume|vset oldtag newtag
# vxassist [-g diskgroup] removetag volume|vset tagname
To list the tags that are associated with a volume, use the following command:
# vxassist [-g diskgroup] listtag [volume|vset]
If you do not specify a volume name, all the volumes and vsets in the disk group
are displayed. The acronym vt in the TY field indicates a vset.
The following is a sample listtag command:
# vxassist -g dg1 listtag vol
To list the volumes that have a specified tag name, use the following command:
# vxassist [-g diskgroup] list tag=tagname volume
Tag names and tag values are case-sensitive character strings of up to 256
characters. Tag names can consist of the following ASCII characters:
■ Letters (A through Z and a through z)
■ Numbers (0 through 9)
Administering volumes
Setting tags on volumes
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