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HP Hitachi Dynamic Link Manager Software User Manual

Page 231

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4. HDLM Operation

209

procedure when all the following conditions are satisfied

#

, the volume group

cannot be activated after the host is restarted:

The host was shut down while a volume group was active, and the volume

group consisted of hdisks that had paths going through the HBAs to be

replaced.

The hdisk reservation policy for the hdisks that make up the volume group

has been set to

PR_exclusive

.

#

If you replace some HBAs for the volume group, after the host is restarted,

the volume group is activated and the paths going through the new HBAs are

added. However, the paths that go through the old HBAs remain defined, so

delete such paths as necessary.


To activate a volume group, perform the following:

• For a volume group comprising rootvg

Clear the reservation for the applicable LUs from the storage system or other

servers.

• For a volume group other than rootvg

1.

If LUN security has been set up for the storage system, add the WWNs of the

new HBAs to the LUN security.

2.

Start the host.

3.

Execute the following command to delete the HDLM devices on the paths

that go through the old HBAs:

# rmdev -dl

hdisk-name

n indicates the instance number of the HDLM device.

4.

If LUN security has been set up for the storage system, delete the WWNs of

the old HBAs from the LUN security.

5.

Execute the following command to reconfigure the devices:

# cfgmgr -l fcs

n

Specify the device name of the PCI slot (

fcs

device) where each HBA has

been replaced. n indicates the instance number of the

fcs

device.

6.

Execute the following command to check path information:

# /usr/DynamicLinkManager/bin/dlnkmgr view -path