HP Hitachi Dynamic Link Manager Software - Manual (Page 261)

3. Creating an HDLM Environment
239
3.15 Setting Up SVM
If SVM is installed on an HDLM host, SVM uses the logical device file name of the
HDLM device to access the HDLM-managed device. Therefore, after installing
HDLM, you need to register the logical device file name of the HDLM device in SVM.
When uninstalling HDLM, unregister the logical device file name of the HDLM
device and set the logical device file name of the sd or ssd device.
3.15.1 Notes
When using SVM, keep the following in mind.
„ Even if you use a local diskset or shared diskset, do not specify the
-r
option
when changing the path configuration and executing the
dlmsetconf
utility for
creating the HDLM driver configuration definition file. When you specify the
-r
option, the minor number of the HDLM device used on the SVM will be changed,
and you will no longer be able to use the volume.
„ Even if you use a local diskset or shared diskset, you cannot use the Solaris
management console. Use the command line utility instead. Also, when you set
up a volume, do not use the
-a
option of the
metainit
command. Register the
database on the command line, and then register the volume.
„ Specify the same name for the logical device file name (
c
U
t
X
d
Y) of the HDLM
device on all the hosts that belong to a single shared diskset.
„ When a shared diskset is used, specify the same major number and minor number
for the physical device files of the HDLM devices on all the hosts that belong to
that shared diskset.
Executing the following command enables you to check the major number and
minor number for the physical device file of the HDLM device.
# ls -lR /devices/pseudo | grep dlmfdrv
To specify the same major number and minor number for the physical device files
of the HDLM device on each host using the shared diskset:
1.
View the
/etc/name_to_major
file on each host, and then select a major
number that is not used on any host.
2. Edit the
/etc/name_to_major
file to set the major number of the HDLM
filter driver (
dlmfdrv
) to the number you chose above.
3. Restart all the hosts, specifying either of the following commands:
# reboot -- -r