Hitachi Dynamic Link Manager, User Manual, Page: 268 / 746

3. Creating an HDLM Environment
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size=5238528K mtime=Wed Feb 6 19:17:08 2008
mdadm: /dev/sddlmaa1 appears to be part of a raid array:
level=-4 devices=2 ctime=Wed Feb 6 19:16:07 2008
Continue creating array? y
mdadm: array /dev/md0 started.
8. Create a configuration file.
Execute the following command to add an md device definition to the existing
configuration file
/etc/mdadm.conf
:
# mdadm --detail --scan | grep -w "/dev/md0" >> /etc/
mdadm.conf
The following example shows the contents of the created configuration file:
The underlined part indicates the lines added in this step.
# cat /etc/mdadm.conf
DEVICE /dev/sdo1 /dev/sdh1
ARRAY /dev/md0 level=multipath num-devices=2
UUID=6b2ec21b:06d0f50b:bbf04d32:1e00b09a auto=yes
ARRAY /dev/md0 level=linear num-devices=1
UUID=426a9f1c:9cfa6310:6aa9a80b:11ea2102
For details about the contents of the configuration file, see the Linux
documentation or use the
man
command.
9. If the configuration file
/etc/mdadm.conf
has been recreated, delete the
unnecessary
ARRAY
line in that configuration file.
Delete the
ARRAY
line that includes the same name as the md device name (
md0
)
created in step 8. In the following example, the underlined lines are to be deleted.
# cat /etc/mdadm.conf
DEVICE /dev/sdo1 /dev/sdh1
ARRAY /dev/md0 level=multipath num-devices=2
UUID=6b2ec21b:06d0f50b:bbf04d32:1e00b09a auto=yes
ARRAY /dev/md0 level=linear num-devices=1
UUID=426a9f1c:9cfa6310:6aa9a80b:11ea2102
10. Edit the
/etc/mdadm.conf
file to add
auto=yes
to the
ARRAY
line in the
configuration file:
DEVICE /dev/sdo1 /dev/sdh1