HP XP P9500 Storage User Manual
Page 280
•
The LUN configuration was changed for the path to be used by HDLM to
determine the logical device file name of the HDLM device.
If the HDLM logical device file has been re-created by specifying the different
file name, perform the following procedures:
•
Change the disk settings being used by the application programs.
•
When using VxVM, execute the following command to confirm that the
DEVICE column of the LUs being managed by HDLM is displayed in the
cWtXdYsZ format (for example, c6t0d10s2):
# vxdisk list
If the value is displayed in the cWtXdYsZ format, perform the following
procedures:
a
.
Delete the /etc/vx/disk.info file.
b
.
Restart the host, or restart the VxVM configuration daemon by
executing the following command:
# vxconfigd -k
•
If the logical device file before re-creation might remain in the /dev/dsk
and /dev/rdsk directories, you must delete the logical device file before
re-creation. Delete the logical device file before its re-creation, and then
Changing the Configuration of a System that
The logical device file names of HDLM devices on each LU are determined by
using the path (physical device file name corresponding to the sd or ssd
device) that can be obtained by using the following procedure:
To obtain the path to an LU:
1
.
Obtain the instance number of the HDLM driver corresponding to the LU.
Execute the following command to display the minor number of the HDLM
device of the desired LU (HDLM device on slice 0). The value obtained by
dividing the displayed minor number by 8 is the instance number of
HDLM.
# /usr/bin/ls -lL HDLM-logical-device-file-name-on-slice-0
The following shows an example of executing the command.
This example obtains the instance number of the HDLM driver of the LU
whose logical device file name is /dev/dsk/c4t21d0s0. In this case, since
the minor number is 8, the instance number is 1.
2
.
Obtain path information from the instance number of the HDLM driver.
Execute the following command to display the driver configuration
information, and then refer to the instance field of the HDLM driver
4-18
HDLM Operation
Hitachi Dynamic Link Manager User Guide for Solaris
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