Hitachi Dynamic Link Manager Software Users Guide for Linux

• To set up LUKS on an HDLM device, execute the /sbin/cryptsetup
command, which is the same way as setting up LUKS on SCSI devices.
• When using LUKS on an HDLM device, enter the HDLM device's device file
name in the /etc/crypttab file's second field.
Using HDLM in an LUKS Environment
This subsection describes how to migrate LUKS from a SCSI device
environment using LUKS to HDLM devices.
To migrate from /dev/sdh to /dev/sddlmaa:
1. Check the HDLM device to be migrated from the SCSI device.
Execute the HDLM-configuration definition utility (dlmcfgmgr) with the -v
parameter specified to check the correspondence between the SCSI
device and the HDLM device.
The following shows an example of executing the dlmcfgmgr utility with
the specified-v parameter:
# dlmcfgmgr -v
HDevName Management Device Host Channel Target Lun
/dev/sddlmaa configured /dev/sdh 1 0 0 0
/dev/sddlmab configured /dev/sdj 1 0 0 1
:
:
KAPL10302-I /sbin/dlmcfgmgr completed normally.
#
HDLM devices are listed in the HDevName column, and SCSI devices are
listed in the Device column.
2. Check the /etc/crypttab file's second field.
¢
If a SCSI device is directly specified, change the SCSI device in
the /etc/crypttab file's second field to the corresponding HDLM
device that was checked in step 1, and then go to step 4.
The following shows an example of editing the /etc/crypttab file's
second field:
Before editing:
luks-volume1
/dev/sdh /etc/cryptpassword1
After editing:
luks-volume1
/dev/sddlmaa /etc/cryptpassword1
¢
If the device name is specified in UUID format, go to step 3.
3. Execute the following command to check the correspondence between the
UUID and the device name.
# blkid -t UUID="050f9901-3ab8-4556-a091-9c6e4a404f09" -l -o
device
/dev/sdh
#
3-158
Creating an HDLM Environment
Hitachi Dynamic Link Manager (for Linux®) User Guide