HP 3PAR InForm OS 3.1.1 Command Line Interface Reference

NOTE: If the volume is not in any domain, then its retention time cannot exceed the value of the
system's VVRetentionTimeMax . The default value for the system's VVRetentionTimeMax is 14 days.
If the volume belongs to a domain, then its retention time cannot exceed the value of the domain's
VVRetentionTimeMax , if set. The retention time cannot be removed or reduced once it is set. If the
volume has its retention time set, it cannot be removed within its retention time. If both expiration
time and retention time are specified, then the retention time cannot be longer than the expiration
time. This option requires the 3PAR Virtual Lock License. Contact your local 3PAR Authorized
Service Provider for more information.
–pol <policy>[,<pol>...]
Specifies virtual volume policies. If an argument is not specified, the option defaults to stale_ss.
Valid policies are as follows:
stale_ss
Specifies that invalid (stale) snapshot volumes are permitted. Failures to update snapshot data does
not affect the write to the base volume. However, the snapshot is considered invalid.
no_stale_ss
Specifies that stale snapshot volumes are not permitted. A failure to update a snapshot is considered
a failure to write to the base volume.
one_host
This constrains the export of a volume to one host or one host cluster (when cluster names may be
used as a host name).
no_one_host
This policy should only be used when exporting a virtual volume to multiple hosts for use by a
cluster-aware application, or when “port presents” VLUNs are used. This is the default policy setting.
zero_detect
This policy enables the system to scan for zeros in the incoming write data. This feature when used
during physical copy to a TPVV will avoid allocating space for blocks containing zero. This feature
when used with a Thin Persistence license will reclaim allocated space when zero blocks are written
to the TPVV. This policy is only applicable for the base TPVV.
NOTE: There can be some performance implication under extreme busy systems so it is
recommended for this policy to be turned on only during Fat to Thin and re-thinning process and
be turned off during normal operation.
no_zero_detect
This policy disables the system to scan for zeros in the incoming write data to reclaim allocated
space on the volume. This is the default policy setting.
-snp_cpg <snp_cpg>
Specifies that the volume snapshot space is to be provisioned from the specified CPG. This option
moves all the logical disks currently contained in the snapshot space for these volumes into the
CPG. This is permitted only when none of the logical disks are shared with other volumes that are
not specified in this option. If the <snp_CPG> specifier is specified as "", the volume snapshot
space is longer provisioned from a CPG and the existing snapshot space logical disks are removed
from the CPG. This is permitted only when the existing snapshot logical disks are exclusively used
by the volumes specified in this option.
-snp_aw <percent>
Indicates a snapshot space allocation warning. Through this option you can generate a warning
alert when the reserved snapshot space of the VV exceeds the indicated percentage of the VV
size.
344 Set Commands