Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

Creating Traditional Third-Mirror Break-Off Snapshots
306 VERITAS Volume Manager Administrator’s Guide
Displaying Snapshot Information (vxassist snapprint)
The vxassist snapprint command displays the associations between the original
volumes and their respective replicas (snapshot copies):
# vxassist snapprint [volume]
Output from this command is shown in the following examples:
# vxassist -g mydg snapprint v1
V NAME USETYPE LENGTH
SS SNAPOBJ NAME LENGTH %DIRTY
DP NAME VOLUME LENGTH %DIRTY
v v1 fsgen 20480
ss SNAP-v1_snp SNAP-v1 20480 4
dp v1-01 v1 20480 0
dp v1-02 v1 20480 0
v SNAP-v1 fsgen 20480
ss v1_snp v1 20480 0
# vxassist -g mydg snapprint v2
V NAME USETYPE LENGTH
SS SNAPOBJ NAME LENGTH %DIRTY
DP NAME VOLUME LENGTH %DIRTY
v v2 fsgen 20480
ss -- SNAP-v2 20480 0
dp v2-01 v2 20480 0
v SNAP-v2 fsgen 20480
ss -- v2 20480 0
In this example, Persistent FastResync is enabled on volume v1, and Non-Persistent
FastResync on volume v2. Lines beginning with v, dp and ss indicate a volume, detached
plex and snapshot plex respectively. The %DIRTY field indicates the percentage of a
snapshot plex or detached plex that is dirty with respect to the original volume. Notice
that no snap objects are associated with volume v2 or with its snapshot volume SNAP-v2.
See “How Persistent FastResync Works with Snapshots” on page 53 for more information
about snap objects.
If a volume is specified, the snapprint command displays an error message if no
FastResync maps are enabled for that volume.