HP Hitachi Dynamic Link Manager Software User Manual
Page 333

4. HDLM Operation
311
(1) Changing the Configuration by Restarting the Host
1.
Back up the data in the file systems, volumes, and metadevices that use the
HDLM device you are reconfiguring.
2.
Execute the following command to unmount all mount points that use HDLM:
# umount
mount-point
3.
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
4.
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 (
c
U
t
X
d
Y
s
Z) and the ZFS file system whose
configurations you want to change, and then release the setting for automatic
mounting.
5.
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.
6.
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.
7.
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.
8.
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