4. HDLM Operation
377
Perform this operation if necessary. If it is not necessary to check this, go to step 7.
If the SCSI device name is not represented with a hyphen (-), to change the SCSI
device name to a hyphen, wait until the path health checking has been executed
or execute the following
dlnkmgr command with the AutoPATH_ID of the
HDLM device.
Example:
# /opt/DynamicLinkManager/bin/dlnkmgr online -pathid
AutoPATH_ID
7. Execute the dlmcfgmgr utility (dlmcfgmgr -u
logical_device_file_name_of_HDLM_device) on the relevant HDLM device
whose path was deleted in the above step 2 to unregister the HDLM device.
Path information on the relevant HDLM device is deleted.
The following is an example of executing the
dlmcfgmgr utility:
# /sbin/dlmcfgmgr -u
name-of-logical-device-file-for-HDLM-device
If you execute the dlmcfgmgr utility (dlmcfgmgr -u) when a path to the
HDLM device exists (for example, when you change a multi-path configuration
to a single-path configuration), the KAPL10340-E message is output. In this case,
take action according to this message and refer to the
/var/opt/
DynamicLinkManager/log/dlmcfgmgr
n.log file (where n is 1 or 2). If the
KAPL10362-W message was output to the
/var/opt/
DynamicLinkManager/log/dlmcfgmgr
n.log file, HDLM operations are
not affected. Go to step 8.
8. Refer to the
/var/opt/DynamicLinkManager/log/dlmcfgmgr1.log or
execute the
dlmcfgmgr (dlmcfgmgr -v) to check if the path mapped with the
relevant HDLM device is deleted.
The following is an example of executing the
dlmcfgmgr utility:
# /sbin/dlmcfgmgr -v
(6) Changing a Device Managed by HDLM into One Not Managed by HDLM:
The following operation can be done without restarting the host.
To change a device managed by HDLM into one not managed by HDLM:
1. Stop all accesses to the relevant LU.
2. Execute the HDLM-configuration definition utility (
dlmcfgmgr -v) to check if
the device you want to exclude from HDLM management is being managed by
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