
3. Creating an HDLM Environment
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4. If necessary, back up the application data residing on the md device.
5. If file systems have been mounted on the md device, unmount them.
6. Check the status of the md device.
Execute the following command to check the configuration of the md device:
# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sddlmaa1[0] sddlmab1[1]
5238528 blocks [2/2] [UU]
unused devices: <none>
Make sure that md0 : active and the HDLM devices are displayed:
7. Execute the following command to deactivate the md device:
# mdadm -Ss /dev/md0
8. Make sure that the md device has been deactivated.
In the following example, RAID1 (mirroring) is used for the md device:
# cat /proc/mdstat
Personalities : [raid1]
unused devices: <none>
Make sure that md0 : active is not displayed.
9. Check the correspondence between the HDLM devices and SCSI devices.
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/sddlmab
configured /dev/sdi 1 0 0 1
KAPL10302-I /sbin/dlmcfgmgr completed normally.
The HDevName and Device columns display HDLM devices and SCSI devices,
respectively.
10. Edit the configuration file.
Based on the correspondence between the HDLM devices and SCSI devices
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