About Creating A New Hdlm Device - Hitachi XP P9500 User Manual

If the SCSI device name mapped with the path to the relevant HDLM device is
represented with a hyphen (
in disconnected status.
2. Connect the cable.
If the cable is broken, replace it.
When the restart of the host is possible, go to step 3. When the restart of the host
is not possible, go to step 4.
3. Restart the host.
The SCSI device is recreated, and the status changes to online. Go to step 6.
4. Create the SCSI device for the path to be restored.
You must execute the command for adding a device, shown in Table 4-4: Add
SCSI Devices: Add SCSI Devices, to manually create the SCSI device.
5. Wait until the automatic failback function starts, or execute the dlnkmgr
command (
The following is an example of executing the HDLM command:
# /opt/DynamicLinkManager/bin/dlnkmgr online -pathid
AutoPATH_ID
The relevant path is placed online.
6. Execute the
relevant HDLM device is restored.
The following is an example of executing the
# /sbin/dlmcfgmgr -v

4.6.5 About Creating a New HDLM Device

While restarting the host, HDLM may detect a new path. The HDLM device to be
allocated depends on whether the SCSI device for the detected path is already
registered or a new SCSI device is registered. This section describes a situation where
the HDLM device that is to be allocated to the newly detected path is already registered
and a situation where a new HDLM device is created.
If the SCSI device of the new path that HDLM detected is already registered, the
HDLM device mapped with the path already registered is allocated. For example, if
the path between the host and an LU of the storage system already exists and a new
path is added, the HDLM device that already exists is allocated to the path.
), in the execution result, this means that the path was
-
dlnkmgr online -pathid
utility (
dlmcfgmgr dlmcfgmgr -v
4. HDLM Operation
AutoPATH_ID).
) to check if the path to the
utility:
dlmcfgmgr
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