HP Hitachi Dynamic Link Manager Software - Manual (Page 484)

Status before executing the
dlmcfgmgr utility (dlmcfgmgr -r)
Status after executing the
dlmcfgmgr utility (dlmcfgmgr -r)
/dev/sddlmac
/dev/sddlmaa
:
/dev/sddlmpp /dev/sddlmaa
:
/dev/sddlmpp
/dev/sddlmaaa
#
/dev/sddlmaa
:
/dev/sddlmaap /dev/sddlmaa
:
/dev/sddlmaap
/dev/sddlmbaa
#
#
A newly assigned logical device file name of the HDLM device
Every time the host starts, the dlmcfgmgr utility (dlmcfgmgr -r) is
automatically executed. This utility can be executed a number of
times if necessary after starting the host. When this utility is
executed, this utility checks the current HDLM settings. If a new path
is detected, this utility registers the path dynamically so that the path
can be used. The path status for the newly detected path or the
existing path other than the Offline(C) path is changed to the current
status. In this case, the path health checking and the automatic
failback are executed at the same time.
If the error message KAPL10357-E is displayed, HDLM does not add
an HDLM device even though a new LU was recognized. In this case,
execute the dlmcfgmgr utility with the -u parameter to delete the
unused HDLM device. This releases a usable name and you can create
a logical device file for the HDLM device for a new LU.
Even if you execute the dlmcfgmgr utility (dlmcfgmgr -r) to add a
path to an HDLM device that is not managed by HDLM, that HDLM
device will not be managed by HDLM.
-o {logical-device-file-name-of-the-HDLM-device ...|all}
Use this parameter to exclude the management-target HDLM device from
being managed.
You can specify one or more logical device file names of an HDLM device
(/dev/sddlm[aa-pap]) as a parameter value. For details on logical device
files for HDLM devices, see Logical Device Files for HDLM Devices on page
2-11 .
If you want to exclude all the HDLM devices from being managed, specify
all. Specifying all together with a logical device file name of the HDLM
device causes an error.
Specifying the -o parameter without a parameter value also causes an
error. If you specify a logical device file name of an HDLM device that
does not exist, non-HDLM device, or HDLM device that is already defined
as a non-HDLM-managed device, the specification is ignored.
The dlmcfgmgr utility with this parameter can be executed a number of
times while Linux is running. The specified HDLM device can be excluded
7-24
Utility Reference
Hitachi Dynamic Link Manager User Guide for Linux ®