HP Hitachi Dynamic Link Manager Software User Manual

Page 357

4. HDLM Operation

333

even while the HDLM device is in use. Before doing so, perform the following

operations:
1.

Unmount any devices mounted on the HDLM device.

Execute the

dlmcfgmgr -o

command to exclude the HDLM device from

management.

When a device is dynamically configured by using the udev function, the

messages shown below might be output to the console or syslog. However,

HDLM operations are not affected.
Output example:

scsi_id[

a01

]: Cannot find sysfs device associated with /sys/

block/sddlma01

For a01 in the above examples, any alphanumeric character can be output.

You cannot execute the

partprobe

command for HDLM devices because this

command does not support HDLM devices.
If you want to add a partition to or delete a partition from an HDLM device (LU),

first stop all applications that are using the target HDLM device (LU) so that the
HDLM device (LU) is not being used

If you add or delete a partition while an HDLM device (LU) is being used, restart

the host to reload the partition table.
#

This state is achieved when none of the partitions of the HDLM device (LU)

are being used.

4.1.3 Notes When Using Red Hat Enterprise Linux 5, Red Hat

Enterprise Linux 6, or Oracle Enterprise Linux 5

Note the following when your OS is Red Hat Enterprise Linux 5, Red Hat Enterprise

Linux 6, or Oracle Enterprise Linux 5:

SCSI devices corresponding to an HDLM device can be removed dynamically