HP Hitachi Dynamic Link Manager Software User Manual

Page 333

4. HDLM Operation

311

(1) Changing the Configuration by Restarting the Host

Back up the data in the file systems, volumes, and metadevices that use the

HDLM device you are reconfiguring.

Execute the following command to unmount all mount points that use HDLM:

# umount

mount-point

If HDLM devices are being used in Solaris 10 ZFS, execute the following

command to export all their ZFS storage pools:

# zpool export

pool-name

Edit the

/etc/vfstab

file.

In the

/etc/vfstab

file, delete or comment out the specifications of the logical

device files for the HDLM devices (

Z) and the ZFS file system whose

configurations you want to change, and then release the setting for automatic

mounting.

If you are using Sun Cluster, clear the settings for the disk device group that

contains the HDLM devices you are reconfiguring. If a Quorum device is among

the HDLM devices you are reconfiguring, clear the Quorum device settings.
For details, see (10) Set Up Sun Cluster in 3.5.1 Preparations for a New

Installation of HDLM.

If you are using VCS, unregister the HDLM devices you are reconfiguring and

VxVM disk groups containing those HDLM devices, from the resource groups.

For details on how to remove the VCS settings, refer to the VCS documentation.

If you are using VxVM, unregister the HDLM devices associated with the LUs

you are deleting.
If VxVM uses the LU you are deleting, delete the volumes and VxVM disk

groups. To have another LU take over from the LU you are deleting, replace the

LU.

If you are using SDS or SVM, perform the following as required:

• If you are using a shared diskset, unregister the HDLM devices you are

reconfiguring from the shared diskset. If the path used to reserve an LU is

changed, it may not be possible to clear the reservation.

• To delete an LU when using a local diskset, unregister the HDLM device

associated with that LU from SDS or SVM. If SDS or SVM is using the LU,

delete the metadevices and volumes. To have another LU take over from the