Hitachi Dynamic Link Manager Software Users Guide for Linux

a. Update the HDLM device with information about unavailable SCSI
devices by executing the dlmcfgmgr utility with the -r parameter
specified.
b. Delete the HDLM device by executing the dlmcfgmgr utility with all
specified in the -u parameter.
• If you execute the dlmcfgmgr utility with the -r parameter after
dynamically deleting an SCSI device, the HDLM device will become
unavailable. If you then add the SCSI device dynamically and execute the
dlmcfgmgr utility with the -r parameter specified, the HDLM partition
information will be lost from /proc/partitions. To restore the
information, follow these steps:
a. Delete the SCSI device you just added.
b. Dynamically add the SCSI device once again.
c. Execute the online operation to place the device path online.
d. Execute the dlmcfgmgr utility with the -r parameter specified.
• If you execute the dlmcfgmgr utility with the -r parameter specified while
all paths connecting to the HDLM device are disconnected, the HDLM
partition information will be lost from /proc/partitions. To restore the
HDLM partition information, follow these steps:
a. Connect the path and place the device online.
b. Execute blockdev --rereadpt HDLM-device to update the partition
information.
dlmchname HDLM Device Name Replacement Utility
This utility changes an HDLM device name. This utility can also assign the
same HDLM device name to disks that are used by multiple hosts for the
same purpose and assign the same HDLM device name to a disk shared in a
cluster.
For details on how to change an HDLM device name, see
Changing an HDLM
device name on page 4-70.
Format
/opt/DynamicLinkManager/bin/dlmchname [-f | -o]
Parameters
-f
Specify this parameter to change the name of an HDLM device that is
being used.
You must restart the host after the command is completed.
-o
Utility Reference
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Hitachi Dynamic Link Manager (for Linux®) User Guide