HP 3PAR StoreServ 7400 2-node HP 3PAR Command Line Interface Administrator& - Page 132

background_command, compact_cpg, promote_sv, remote_copy_sync

Page 132 highlights

background_command The background_command task type tracks commands initiated by the starttask CLI command. The background_command task type has only one phase and one step. See the background_command task type in Table 11 (page 130) for a list of the commands that can be run by the starttask command. See "Starting a Task" (page 127) for more information about the starttask command. compact_cpg The compact_cpg task type tracks the operations of the compactcpg command. For more information about compacting CPGs, see "Compacting Common Provisioning Groups" (page 179). The compact_cpg task type has only one phase, and the number of steps is equal to the number of LD regions to be moved. compact_lds The compact_lds task type tracks the operations of the compactld command. For more information about compacting LDs, see "Compacting Logical Disks" (page 178). The compact_lds task type has only one phase, and the number of steps is equal to the number of LD regions to be moved. promote_sv The promote_sv task type is used to track virtual copy snapshot promote operations. Promoting a virtual copy snapshot copies the differences of the virtual copy back to its base volume. You can promote a virtual copy snapshot using the promotesv command; see the "Promoting a Virtual Copy" (page 96) for details. Virtual copy snapshots may also be automatically promoted by systems using Remote Copy, for example when issuing the setrcopytargetreverse or setrcopygrouptarget commands on a primary storage system or a system with primary groups in order to reverse targets. Use of Remote Copy requires an HP 3PAR Remote Copy Software license. For promote_sv tasks, there is only one phase. The number of steps in that phase is equal to the number of Gigabytes being copied. NOTE: The promote_sv task type requires the HP 3PAR Virtual Copy Software license. remote_copy_sync The remote_copy_sync task type is used to track remote copy volume synchronizations on systems using Remote Copy. Remote Copy is an optional volume mirroring solution that can be used for disaster recovery and backup. The system creates a separate task for each primary volume undergoing synchronization. You can initiate Remote Copy volume synchronizations manually by issuing CLI commands, or it can be performed automatically by the system. For instance, you can manually synchronize remote copy volume groups using the command. Restarting remote copy volume groups, by using the startrcopygroup command, can also initiate a remote copy synchronization on the system. However, with periodic mode volume groups, the startrcopygroup command will initiate synchronization only the first time that it is issued for that volume group. In addition, periodic mode remote copy volume groups may be automatically resynchronized by systems using Remote Copy, but only if the resynchronization period has been set for the volume groups. 132 Managing Tasks

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background_command
The
background_command
task type tracks commands initiated by the
starttask
CLI command.
The
background_command
task type has only one phase and one step.
See the
background_command
task type in
Table 11 (page 130)
for a list of the commands that
can be run by the
starttask
command.
See
“Starting a Task” (page 127)
for more information about the
starttask
command.
compact_cpg
The
compact_cpg
task type tracks the operations of the
compactcpg
command. For more
information about compacting CPGs, see
“Compacting Common Provisioning Groups” (page 179)
.
The
compact_cpg
task type has only one phase, and the number of steps is equal to the number
of LD regions to be moved.
compact_lds
The
compact_lds
task type tracks the operations of the
compactld
command. For more
information about compacting LDs, see
“Compacting Logical Disks” (page 178)
. The
compact_lds
task type has only one phase, and the number of steps is equal to the number of LD regions to be
moved.
promote_sv
The
promote_sv
task type is used to track virtual copy snapshot promote operations. Promoting
a virtual copy snapshot copies the differences of the virtual copy back to its base volume. You can
promote a virtual copy snapshot using the
promotesv
command; see the
“Promoting a Virtual
Copy” (page 96)
for details. Virtual copy snapshots may also be automatically promoted by systems
using Remote Copy, for example when issuing the
setrcopytargetreverse
or
setrcopygrouptarget
commands on a primary storage system or a system with primary
groups in order to reverse targets. Use of Remote Copy requires an HP 3PAR Remote Copy Software
license.
For
promote_sv
tasks, there is only one phase. The number of steps in that phase is equal to the
number of Gigabytes being copied.
NOTE:
The
promote_sv
task type requires the HP 3PAR Virtual Copy Software license.
remote_copy_sync
The
remote_copy_sync
task type is used to track remote copy volume synchronizations on
systems using Remote Copy. Remote Copy is an optional volume mirroring solution that can be
used for disaster recovery and backup. The system creates a separate task for each primary volume
undergoing synchronization.
You can initiate Remote Copy volume synchronizations manually by issuing CLI commands, or it
can be performed automatically by the system. For instance, you can manually synchronize remote
copy volume groups using the command. Restarting remote copy volume groups, by using the
startrcopygroup
command, can also initiate a remote copy synchronization on the system.
However, with periodic mode volume groups, the
startrcopygroup
command will initiate
synchronization only the first time that it is issued for that volume group. In addition, periodic mode
remote copy volume groups may be automatically resynchronized by systems using Remote Copy,
but only if the resynchronization period has been set for the volume groups.
132
Managing Tasks