HP Hitachi Dynamic Link Manager Software - Manual (Page 310)

4. HDLM Operation
288
„ When using VxVM, execute the following command to confirm that the
DEVICE
column of the LUs being managed by HDLM is displayed in the
c
W
t
X
d
Y
s
Z
format (for example,
c6t0d10s2
):
# vxdisk list
If the value is displayed in the
c
W
t
X
d
Y
s
Z format, perform the following
procedures:
1.
Delete the
/etc/vx/disk.info
file.
2. 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 follow the
instructions in (1) Changing the Configuration of a System that Uses HDLM.
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.