
3. Creating an HDLM Environment
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For details about the contents of the configuration file, see the Linux
documentation or use the
man command.
If you created a new configuration file, go to step 9.
7. If you have already used a configuration file (
/etc/mdadm.conf), 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 6. In the following example, the underlined lines are to be deleted.
# cat /etc/mdadm.conf
DEVICE /dev/sdh1 /dev/sdi1
DEVICE /dev/sdf1 /dev/sdg1 /dev/sdh1 /dev/sdi1
ARRAY /dev/md0 level=raid1 num-devices=2
UUID=e39a6b15:32e48a5d:ca05f4db:25bc8af9
ARRAY /dev/md0 level=linear num-devices=1
UUID=426a9f1c:9cfa6310:6aa9a80b:11ea2102
8. If you have already used a configuration file (/etc/mdadm.conf), edit the
DEVICE lines.
If the existing
DEVICE lines include SCSI devices that are specified in the
DEVICE lines created in step 6, edit the DEVICE lines to exclude the SCSI devices.
The following are examples of editing the lines:
Before the correction:
DEVICE /dev/sdh1 /dev/sdi1
DEVICE /dev/sdf1 /dev/sdg1 /dev/sdh1 /dev/sdi1
After the correction:
DEVICE /dev/sdh1 /dev/sdi1
DEVICE /dev/sdf1 /dev/sdg1
9. Edit the /etc/mdadm.conf file to add auto=yes to the ARRAY line in the
configuration file:
DEVICE /dev/sdh1 /dev/sdi1
DEVICE /dev/sdf1 /dev/sdg1
ARRAY /dev/md0 level=raid1 num-devices=2
UUID=e39a6b15:32e48a5d:ca05f4db:25bc8af9 auto=yes
10. Execute the following command to deactivate the md device.
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