HP 3PAR OS 3.1.3 Command Line Interface Reference

block host I/O to the parent virtual volume during snapshot creation. This option is only applicable
for read-only snapshots.
SPECIFIERS
<SV_name>
Specifies the snapshot name, using up to 31 characters in length.
<copy_of_VV | VV_set>
Specifies the parent volume name or volume set name, using up to 31 characters in length. The
VV_set name must start with set:. If copy_of_VV is a VV_set then svname can contain various
patterns that are used to form the snapshot volume name.
RESTRICTIONS
• Use of this command requires a Virtual Copy license. Contact your local HP representative
for information.
• A read-only snapshot of a read-only source volume is not allowed.
• A read/write snapshot of a read/write snapshot or base is not allowed.
EXAMPLES
• The following example creates a read-only snapshot volume svro_vv0 from volume vv0:
cli% createsv –ro svr0_vv0 vv0
• The following example creates snapshot volume svrw_vv0 from the snapshot svro_vv0:
cli% createsv svrw_vv0 svro_vv0
• The following example creates a snapshot volume for each member of the VV set vvcopies.
Each snapshot will be named svro-<name of parent volume>:
cli% createsv -ro svro-@vvname@ set:vvcopies
If vvcopies contained VVs named vv.0, vv.1 and vv.2 this would result in snapshots
named svro-vv.0, svro-vv.1 and svro-vv.2.
NOTES
• A maximum of 256 writable virtual copies per volume are allowed.
• A maximum of 500 virtual copies per volume are allowed.
• For a vv set, the createsv command creates consistent group snapshots of the virtual volumes
in the set. Consistent group snapshots are all created at the same point in time so that related
structures on different volumes in the set remain consistent.
• For remote copy (-rcopy), identical snapshots are created on both the primary and secondary
arrays. Only read-only snapshots may be taken with The -rcopy flag.
• If the remote copy volume pair has different names on the primary and secondary arrays, any
automatic @vvname@ substitution will reflect the name of the primary array volume.
132 Create Commands