
3. Creating an HDLM Environment
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# cat /proc/mdstat
Personalities : [linear]
unused devices: <none>
Make sure that md0 : active is not displayed.
5. Check the correspondence with HDLM device.
Execute the HDLM-configuration definition utility
dlmcfgmgr with the -v
parameter specified:
# dlmcfgmgr -v
HDevName Management Device Host Channel Target Lun
/dev/sddlmaa
configured /dev/sdh 1 0 0 0
/dev/sdo
2 0 0 1
KAPL10302-I /sbin/dlmcfgmgr completed normally.
The HDevName and Device columns display HDLM devices and SCSI devices,
respectively.
6. Create an md device.
Based on the correspondence between the HDLM devices and SCSI devices
checked in step 5, create an md device.
When you specify a device name, you must also specify the partition number that
is displayed in step 2.
Specify all SCSI devices that correspond to HDLM devices:
# mdadm -C /dev/md0 -lmp -n2 /dev/sdh1 /dev/sdo1
mdadm: /dev/sdh1 appears to contain an ext2fs file system
size=5238528K mtime=Wed Feb 6 20:02:45 2008
mdadm: /dev/sdh1 appears to be part of a raid array:
level=-1 devices=1 ctime=Wed Feb 6 19:31:04 2008
mdadm: /dev/sdo1 appears to contain an ext2fs file system
size=5238528K mtime=Wed Feb 6 20:02:45 2008
mdadm: /dev/sdo1 appears to be part of a raid array:
level=-1 devices=1 ctime=Wed Feb 6 19:31:04 2008
Continue creating array? y
mdadm: array /dev/md0 started.
7. Create a configuration file.
Execute the following command to add an md device definition to the existing
configuration file
/etc/mdadm.conf:
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