HP Hitachi Dynamic Link Manager Software - Manual (Page 205)

Notes on Installing HDLM in a Boot Disk Environment
Note the following when using HDLM on a boot disk:
• The storage system for which the boot disk will be created must satisfy
the following conditions:
¢
The storage system supports the boot disk functionality even if HDLM
is not used.
¢
HBAs support startup from the storage system.
• When you install the OS, create the root directory (/) and the /boot
directory in separate partitions.
• When you use HDLM as a boot disk, do not specify an HDLM device for
the kernel parameters resume, journal, and dump.
• When Red Hat Enterprise Linux, or SUSE LINUX Enterprise Server is used,
HDLM supports environments that use LVM2 as a boot disk.
• When Red Hat Enterprise Linux, or SUSE LINUX Enterprise Server is used,
HDLM does not support an environment that uses an md device as a boot
disk.
• If you changed the configuration during startup or if the /etc/fstab file
settings are incorrect, the system might not start.
• If the root directory (/) has not been mounted at startup, you cannot
collect a boot error log (/etc/opt/DynamicLinkManager/hdlmboot.log).
In this case, if a problem occurs, use the log displayed on the console to
analyze the problem.
• The dlmcfgmgr log created at startup is output to /etc/opt/
DynamicLinkManager/hdlmboot.log.
• Once you have built an environment for starting the OS from an HDLM
device, you cannot change the boot disk.
• If you do not use the storage systems disk set for the boot disk, before
you install HDLM, edit the /etc/fstab file in the following manner to
disable the LABEL specification and enable the sd device specification.
a
.
Check the installation directory of the OS specified in the LABEL
setting.
# cat /etc/fstab
LABEL=/ / ext3 defaults 1 1
LABEL=/boot /boot ext3 defaults 1 2
Confirm that LABEL indicates the root directory and the /boot
directory.
b
.
Check the correspondence between the LABEL setting and the sd
device.
# mount
/dev/sda2 on / type ext3 (rw)
none on /proc type proc (rw)
none on /dev/pts type devpts (rw,gid=5,mode=620)
Creating an HDLM Environment
3-133
Hitachi Dynamic Link Manager User Guide for Linux ®