Hitachi Dynamic Link Manager, User Manual, Page: 269 / 746

3. Creating an HDLM Environment
245
ARRAY /dev/md0 level=linear num-devices=1
UUID=426a9f1c:9cfa6310:6aa9a80b:11ea2102 auto=yes
11. On the
DEVICE
line of the configuration file, change a SCSI device name to an
HDLM device name.
Based on the correspondence between the HDLM devices and SCSI devices
checked in step 6, change the SCSI device names on the
DEVICE
line to the
HDLM device names.
Before the correction:
DEVICE /dev/sdo1 /dev/sdh1
After the correction:
DEVICE /dev/sddlmaa1
When you edit the
DEVICE
line, change only the device names. Do not change the
partition numbers.
12. Execute the following command to deactivate the md device:
# mdadm -Ss /dev/md0
13. Make sure that the md device has been deactivated.
In the following example, the
LINEAR
function is used for the md device:
# cat /proc/mdstat
Personalities : [linear] [multipath]
#
unused devices: <none>
Make sure that
md0 : active
is not displayed.
#
Although
[multipath]
will be displayed until the host is restarted, there
are no operational problems.
14. Activate the md device and add a path to the LU.
Perform steps 15 to 19 in (1) When the MULTIPATH Function Is Not Being Used
for md Devices .
Note that, in step 17 in (1) When the MULTIPATH Function Is Not Being Used
for md Devices ,
[multipath]
will be displayed until the host is restarted.
However, there are no operational problems.