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
mpath13 (360060160bf902a00e03cb1bb3c3fe411)
\_
\_ 2:0:1:2 sdj 8:144 [active][ready] \_ 3:0:1:2 sdm 8:192 [active][ready]
mpath12 (360060160bf902a00cae2a2a33c3fe411)
\_
\_ 2:0:1:1 sdi 8:128 [active][ready] \_ 3:0:1:1 sdl 8:176 [active][ready]
mpath11 (360060160bf902a002ac0388f3c3fe411)
\_
\_ 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
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