HP XP P9500 Storage - Manual (Page 245)

Preparations for HDLM Removal
Performing Operations on HDLM-Managed Devices
To perform operations on HDLM-managed disks:
1
.
If necessary, back up the contents of the HDLM-managed devices to tape
or some other storage medium.
2
.
For the HDLM devices, collect all relevant information on the
correspondence between the logical device file names and the internal
LUNs of the LUs in the storage system. This information will enable you to
keep the correspondence with the logical device file names after HDLM
has been removed.
You can collect this correspondence information by outputting the results
of the dlnkmgr command's view -path operation to a file. The following
shows an example of executing the command:
# /opt/DynamicLinkManager/bin/dlnkmgr view -path > /var/tmp/
old_view_path_list.txt
Note
Do not specify any of the directories shown below as the output
destination of the results of the dlnkmgr command's view -path
operation. If you specify one of these directories, the file will be
removed when you remove HDLM.
- /opt/DynamicLinkManager
- /opt/hitachi
- /var/opt/DynamicLinkManager
- /var/opt/hitachi
3
.
Back up the logical device files within the /dev/dsk, /dev/rdsk
directories to another directory.
The following shows an example of executing the commands:
# mkdir /var/tmp/bkfile2
# ls -l /dev/dsk > /var/tmp/bkfile2/devices1
# ls -l /dev/rdsk > /var/tmp/bkfile2/devices2
4
.
Stop all processes and services that are using HDLM-managed paths.
Stop all processes and services of DBMS and other applications that are
using HDLM-managed paths.
5
.
Unregister the HDLM-managed devices.
If HDLM-managed devices are registered with applications, including
cluster software programs (other than Volume Manager), unregister those
devices. Since HDLM-managed devices are accessed by using the logical
device file names of the HDLM devices, these applications will no longer
be able to access those HDLM-managed devices by using the names
currently used.
Creating an HDLM Environment
3-179
Hitachi Dynamic Link Manager User Guide for Solaris ®