Hitachi XP P9500 User Manual page 267

1. Stop all applications that are using the existing md device.
2. If necessary, back up the application data residing on the md device.
3. If file systems have been mounted on the md device, unmount them.
4. Check the status of the md device.
Execute the following command to check the configuration of the md device:
# cat /proc/mdstat
Personalities : [multipath]
md0 : active multipath sdo1[0] sdh1[1]
5238528 blocks [2/2] [UU]
unused devices: <none>
Make sure that
md0 : active
If
md0 : active
5. Specify the settings required for the md device, and then install HDLM.
Perform steps 5 to 12 in (1) When the MULTIPATH Function Is Not Being Used
for md Devices.
6. Check the correspondence with HDLM device.
Execute the HDLM-configuration definition utility
parameter specified:
# dlmcfgmgr -v
HDevName
/dev/sddlmaa
KAPL10302-I /sbin/dlmcfgmgr completed normally.
The and
HDevName
respectively.
7. Create an md device.
Based on the correspondence between the HDLM devices and SCSI devices
checked in step 6, create an md device.
When you specify a device name, you must also specify the partition number that
is displayed in step 4.
# mdadm -C /dev/md0 -llinear -f -n1 /dev/sddlmaa1
mdadm: /dev/sddlmaa1 appears to contain an ext2fs file system
and that SCSI devices are displayed.
is not displayed, activate the md device.
Management Device
configured /dev/sdh
/dev/sdo
columns display HDLM devices and SCSI devices,
Device
3. Creating an HDLM Environment
with the
dlmcfgmgr
Host Channel Target Lun
1 0
2 0
-v
0 0
0 1
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