HP Hitachi Dynamic Link Manager Software - Manual (Page 314)

to a SCSI Device (An Environment that Uses the md Device's RAID
Functionality) on page 3-242 , carry out the procedure below.
To remove HDLM, carry out the steps before the removal.
Figure 3-39 Device Configuration When an md Device on an HDLM Device
Is Moved to a SCSI Device (An Environment that Uses the md Device's
RAID Functionality)
To migrate /dev/md0:
1
.
Stop the host and change the multi-path configuration to a single-path
configuration.
2
.
Start the host.
3
.
Stop all applications that are using the existing md device.
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:
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]
3-242
Creating an HDLM Environment
Hitachi Dynamic Link Manager User Guide for Linux ®