HP Online Import Software manual Example 9 Updating the multipath.conf file

a.Close all applications on the host.

b.Unmount the application file systems, bring offline any raw devices (if configured), and deactivate any volume groups where Logical Volume Manager is in use.

c.For a cluster, stop the cluster services, and then stop the cluster.

d.Uninstall EMC PowerPath from the host, following the EMC PowerPath documentation instructions.

6.Configure native device-mapper multipath on the host:

a.If multipath is not already installed, install it.

b.Register HP 3PAR LUN types with device-mapper-multipath by whitelisting HP 3PAR-specific information (in the /etc/multipath.conf file, the vendor is 3PARdata and the product is VV). See the HP 3PAR StoreServ product documentation on the Linux host configuration.

NOTE: 3PARdata and VV are case sensitive.

c.Register EMC LUN types with device-mapper-multipath by whitelisting EMC source array-specific information (if not previously configured).

d.Start device-mapper-multipath.

e.Reload the multipath.conf file.

Example 9 Updating the multipath.conf file

#multipath -v2

#multipath -ll

mpath13 (360060160bf902a00e03cb1bb3c3fe411) dm-4 DGC,VRAID [size=150G][features=1 queue_if_no_path][hwhandler=1 emc][rw] \_ round-robin 0 [prio=1][active]

\_ 2:0:0:2 sde 8:64 [active][ready] \_ round-robin 0 [prio=0][enabled] \_ 3:0:0:2 sdg 8:96 [active][ready]

mpath12 (360060160bf902a00cae2a2a33c3fe411) dm-3 DGC,VRAID [size=200G][features=1 queue_if_no_path][hwhandler=1 emc][rw] \_ round-robin 0 [prio=1][active]

\_ 3:0:0:1 sdf 8:80 [active][ready] \_ round-robin 0 [prio=0][enabled] \_ 2:0:0:1 sdd 8:48 [active][ready]

mpath11 (360060160bf902a002ac0388f3c3fe411) dm-2 DGC,VRAID [size=200G][features=1 queue_if_no_path][hwhandler=1 emc][rw] \_ round-robin 0 [prio=1][active]

\_ 3:0:0:0 sdb 8:16 [active][ready] \_ round-robin 0 [prio=0][enabled] \_ 2:0:0:0 sdc 8:32 [active][ready]

#

7.If EMC PowerPath was uninstalled in step 5, and after multipathing has been configured again on the host, follow these steps:

a.Modify /etc/fstab for new mount points where applicable. Remount file systems.

b.Where applicable, make the appropriate changes to the Logical Volume Manager configuration.

Online Data Migration with Removal of EMC PowerPath 41