vxsnap -n print

Administering volume snapshots 343

Creating instant snapshots

Alternatively, you can use the vxsnap list command, which is an alias for the command:

#vxsnap [-g diskgroup] [-l] [-v] [-x] list [vol]

The following output is an example of using this command on the disk group dg1:

#vxsnap -g dg -vx list

NAME

DG

OBJTYPE SNAPTYPE

PARENT

PARENTDG

SNAPDATE

CHANGE_DATA

SYNCED_DATA

vol

dg1

vol

-

-

-

-

-

10G (100%)

svol1

dg2

vol

fullinst

vol

dg1

2006/2/1 12:29 20M (0.2%)

60M (0.6%)

svol2

dg1

vol

mirbrk

vol

dg1

2006/2/1 12:29 120M (1.2%)

10G (100%)

svol3

dg2

vol

volbrk

vol

dg1

2006/2/1 12:29 105M (1.1%)

10G (100%)

svol21

dg1

vol

spaceopt

svol2

dg1

2006/2/1 12:29 52M (0.5%)

52M (0.5%)

vol-02

dg1

plex

snapmir

vol

dg1

-

-

56M (0.6%)

mvol

dg2

vol

mirvol

vol

dg1

-

-

58M (0.6%)

vset1

dg1

vset

-

-

-

-

-

2G

(100%)

v1

dg1

compvol -

-

-

-

-

1G

(100%)

v2

dg1

compvol -

-

-

-

-

1G

(100%)

svset1

dg1

vset

mirbrk

vset

dg1

2006/2/1 12:29 1G (50%)

2G

(100%)

sv1

dg1

compvol mirbrk

v1

dg1

2006/2/1 12:29 512M (50%)

1G

(100%)

sv2

dg1

compvol mirbrk

v2

dg1

2006/2/1 12:29 512M (50%)

1G

(100%)

vol-03

dg1

plex

detmir

vol

dg1

-

20M (0.2%)

-

 

mvol2

dg2

vol

detvol

vol

dg1

-

20M (0.2%)

-

 

This shows that the volume vol has three full-sized snapshots, svol1, svol2 and svol3, which are of types full-sized instant (fullinst), mirror break-off (mirbrk) and linked break-off (volbrk). It also has one snapshot plex (snapmir), vol-02, and one linked mirror volume (mirvol), mvol. The snapshot svol2 itself has a space-optimized instant snapshot (spaceopt), svol21. There is also a volume set, vset1, with component volumes v1 and v2. This volume set has a mirror break-off snapshot, svset1, with component volumes sv1 and sv2. The last two entries show a detached plex, vol-03, and a detached mirror volume, mvol2, which have vol as their parent volume. These snapshot objects may have become detached due to an I/O error, or, in the case of the plex, by running the vxplex det command.

The CHANGE_DATA column shows the approximate difference between the current contents of the snapshot and its parent volume. This corresponds to the amount of data that would have to be resynchronized to make the contents the same again.

The SYNCED_DATA column shows the approximate progress of synchronization since the snapshot was taken.

The -loption can be used to obtain a longer form of the output listing instead of the tabular form.

The -xoption expands the output to include the component volumes of volume sets.

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Image 342
HP Veritas Volume Manager 5.0 -UX 11i v3 manual # vxsnap -g diskgroup -l -v -x list vol, # vxsnap -g dg -vx list