User's Guide

Example 23 Removing a path to a storage device in RHEL 5.x
# echo offline > /sys/block/sdd/device/state
# echo 1 > /sys/block/sdd/device/delete
# echo offline > /sys/block/sdc/device/state
# echo 1 > /sys/block/sdc/device/delete
# multipath -ll
mpath13 (360060160bf902a00e03cb1bb3c3fe411) dm-4 3PARdata,VV
[size=150G][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=1][active]
\_ 2:0:1:2 sdj 8:144 [active][ready]
\_ 3:0:1:2 sdm 8:192 [active][ready]
mpath12 (360060160bf902a00cae2a2a33c3fe411) dm-3 3PARdata,VV
[size=200G][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=1][active]
\_ 2:0:1:1 sdi 8:128 [active][ready]
\_ 3:0:1:1 sdl 8:176 [active][ready]
mpath11 (360060160bf902a002ac0388f3c3fe411) dm-2 3PARdata,VV
[size=200G][features=0][hwhandler=0][rw]
\_ round-robin 0 [prio=1][active]
\_ 2:0:1:0 sdh 8:112 [active][ready]
\_ 3:0:1:0 sdk 8:160 [active][ready]
#
13. Start the migration by using the HP 3PAR Online Import Utility startmigration command.
Example 24 Starting migration by using startmigration
>startmigration -migrationid 1411673030253
>SUCCESS: Data transfer started successfully.
Viewing Migration Status
Viewing all Migrations
To view all migrations, use the showmigration command from the HP 3PAR Online Import Utility.
Viewing Migrations for a Selected Source Storage System
To view all migrations for a selected source EMC Storage system, use the showmigration
command with the source option from the HP 3PAR Online Import Utility. All migrations for the
storage system are displayed.
Viewing a Selected Migration
To view a selected migration, use the showmigration command with the migrationid option
from the HP 3PAR Online Import Utility.
Viewing Selected Migration Progress by Volume
To view details for a selected migration by source storage system volume, use the
showmigrationdetails command with the migrationid option from the HP 3PAR Online
Import Utility.
50 Performing Online Data Migration Using Linux