HP Hitachi Dynamic Link Manager Software - Manual (Page 306)

3. Creating an HDLM Environment
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3.20 Creating a Character-Type Device File for an HDLM Device
This section describes how to create a character-type device file for an HDLM device.
„ HDLM creates only a block-type device under
/dev
.
„ If the OS is Red Hat Enterprise Linux 5 or Red Hat Enterprise Linux 6, use an
udev
rule file to create the character-type device file. If the OS is Red Hat
Enterprise Linux AS4/ES4 or SUSE LINUX Enterprise Server, use the
raw
command to create the character-type device file.
The following shows the difference between these two methods:
• The character-type device file created by using the
raw
command is deleted
when the host is restarted.
• The character-type device file created by using an
udev
rule file is not
deleted when the host is restarted.
3.20.1 When Using Red Hat Enterprise Linux 5 or Red Hat Enterprise
Linux 6
Use the
udev
rule file to create a character-type device file.
To create a character-type device file by using an
udev
rule file:
1. Edit the
/etc/udev/rules.d/60-raw.rules
file.
For example, you might edit the file as follows:
ACTION=="add", KERNEL=="sddlmaa", RUN+="/bin/raw /dev/raw/
raw1 %N"
2. Restart the host or execute the
start_udev
command.
The editing performed in step 1 is applied when the host is restarted or the
start_udev
command is executed.
The following shows an example of executing the
start_udev
command:
# /sbin/start_udev
3.20.2 When Using Red Hat Enterprise Linux AS4/ES4 or SUSE
LINUX Enterprise Server
A character-type device file is created from the HDLM device using the Linux
raw
command. The following is an example of executing the
raw
command for an HDLM
device.