Hitachi XP P9500 User Manual page 278

to a SCSI Device (An Environment that Uses the md Device's RAID
Functionality) on page
To uninstall HDLM, carry out the steps before the uninstallation.
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
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.
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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.
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6 Check the status of the md device.
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Execute the following command to check the configuration of the md
device:
# cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sddlmaa1[0] sddlmab1[1]
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.
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In the following example, RAID1 (mirroring) is used for the md device:
# cat /proc/mdstat
Personalities : [raid1]
3-210
3-210, carry out the procedure below.
RAID Functionality)
5238528 blocks [2/2] [UU]
Creating an HDLM Environment
Hitachi Dynamic Link Manager User Guide (for Linux(R))