HP StorageWorks P9000 Reference Manual page 82

Option
-c
-v [op]
82 Replication commands
Description
When RAID Manager starts, HORCM_DEV in horcm.conf is translated from Port/target/lun numbers
to the CU:Ldev information, on one hand HORCM_LDEV in horcm.conf is translated from the CU:Ldev
information to Port/target/lun numbers, because RAID needs to specify "Port#, Targ#, Lun#" and
"LDEV" for specifying the target device, and then HORCM keeps this information as internal database
for the configuration.
If a storage administrator changes the LDEV to LUN/port mapping, such as
A new/different LDEV is mapped to a previously used port/LUN, or
A LDEV is mapped to a different/new port
then pair operations might be rejected because the new mapping is different from the mapping
information the database in the running HORCM instance. A pairdisplay command shows the real
LDEV mapping at the time of the command execution and hence shows different information than
what is stored in the internal database of the HORCM instance.
The "-c" option for raidvchkdsp allows you to see if there is a difference between the current running
HORCM instance information and the real mapping. This indication should be used to find such
issues which indicate that:
The HORCM instance should be restarted to discover and use the new mapping information, or
A configuration change occurred without changing the affected configuration files of the HORCM
instance.
Example change from LDEV#785 to LDEV#786:
# raidvchkdsp -g VG000 -c
Group PairVol Port# TID LU Seq# LDEV# LDEV#(conf) -change-> LDEV#
VG000 vg0001 CL4-E-0 0 17 63528 786 785(conf) -change-> 786
# raidvchkdsp -g VG000 -c -fx
Group PairVol Port# TID LU Seq# LDEV# LDEV#(conf) -change-> LDEV#
VG000 vg0001 CL4-E-0 0 17 63528 312 31 1(conf) -change-> 312
Example remove LDEV#785 from a port:
# raidvchkdsp -g VG000 -c
Group PairVol Port# TID LU Seq# LDEV# LDEV#(conf) -change-> LDEV#
VG000 vg0001 CL4-E-0 0 17 63528 - 785(conf) -change-> NO LDEV
# raidvchkdsp -g VG000 -c -fx
Group PairVol Port# TID LU Seq# LDEV# LDEV#(conf) -change-> LDEV#
VG000 vg0001 CL4-E-0 0 17 63528 - 31 1(conf) -change-> NO LDEV
NOTE: If there have not been any changes to the specified volumes, this option displays nothing.
Specifies the following operation that displays each parameter for validation checking:
cflag: Displays all flags for checking regarding data block validation for target vols.
offset: Displays the range setting for data block size of Oracle I/O and a region on a target
volume for validation checking.
errcnt: Displays the statistical information counted as an error for each checking on the target
volumes. Each statistical information counted as an error is cleared when the individual flag for
validation checking is disabled.
gflag: Displays the parameter for guarding on the specified target volumes.
pool: This option displays the capacity and the usable capacity of the Snapshot pool corresponding
to the group. Usually, this option displays the pool capacity and the usable capacity for the pool
ID of which the group is belonging because pool ID is specified in pair creation with group. This
is needed to help the decision whether the restore operation is possible or not, because the pool
capacity is consumed by the restore operation of the Snapshot.
aou[b]: Displays the LUN capacity and usage rate for Thin Provisioning volume corresponding
to the group of RM configuration file, and displays the ID of the pool to which LDEV belongs.
aoub: Displays the LUN capacity in units of block/512 bytes.