Hitachi Dynamic Link Manager, User Manual, Page: 158 / 746

3. Creating an HDLM Environment
134
However, you can avoid the above situations by setting a permanent target ID for
each LU with the HBA driver persistent binding functionality. For details on
whether the persistent binding functionality is supported for your HBA driver and
the setting method, see the manual provided with the HDLM driver.
„
If you created an environment by using the QLogic HBA driver while SUSE
LINUX Enterprise Server 9 is being used, before installing HDLM, make sure
that the following coding is in the line for
INITRD_MODULES=
in the
/etc/
sysconfig/kernel
file.
• When using the QLA22 XX HBA:
qla2200
• When using the QLA23 XX HBA:
qla2300
If
qla2
xxx is appears in the file instead of
qla2200
or
qla2300
, change
qla2xxx
to
qla2200
or
qla2300
as follows:
INITRD_MODULES="mptscsih qla2300 reiserfs"
After editing the
/etc/sysconfig/kernel
file, execute the
mkinitrd
command to re-create an initial RAM disk image.
3.5.2 Notes on Linux
„
Install and uninstall HDLM in a multi-user mode environment.
„
Note that, if the
/var
directory is set up on a different partition than the root
directory (
/
), no logs will be output to the
/var/log/messages
file until the
/
var
directory has been mounted during the OS start process.
„
If multiple OSs exist on a disk that differs physically or logically within the same
host, HDLM can be installed on each OS. Also, if multiple kernels exist on one
OS, HDLM can be used only when the kernel installed with HDLM is started.
Note, however, that if the OS is Red Hat Enterprise Linux 5 or Red Hat Enterprise
Linux 6, you can use HDLM even if HDLM is not installed in the running kernel.
In this case, no settings are required.
„
For Red Hat Enterprise Linux, if HDLM is installed, the
initscripts
package
is updated, the OS is restarted, and no HDLM information exists in the
/etc/
rc.d/rc.sysinit
file, execute the system script update utility
(
dlmupdatesysinit
).
Confirm that the HDLM information is missing by executing the following
commands: