HP Hitachi Dynamic Link Manager Software Licenses - Manual (Page 449)

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If the HDLM driver configuration definition file (/kernel/drv/
dlmfdrv.conf) contains the definition of a newly added LU, the
dlmcfgmgr utility makes the HDLM driver recognize the new LU so
that the LU is to be managed by HDLM. If the definition of an existing
LU no longer exists in the HDLM driver configuration file
(dlmfdrv.conf file), the dlmcfgmgr utility deletes the existing LU
from the HDLM driver and excludes it from HDLM management.
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If an LU is deleted (in Solaris 8 or 9), a path is deleted for an LU, or a
path setting for an LU (for example, the instance number) is changed,
the configuration information used by the HDLM driver is not
dynamically updated. To update the configuration information in any
of these cases, specify the reconfiguration option and then restart the
host.
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To remove the LU managed by HDLM from HDLM management, you
need to restart the host specifying the reconfiguration option. Do not
use the dlmcfgmgr utility.
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If you want to specify that some of the newly added LUs are not to be
managed by HDLM, you need to remove these LUs from HDLM
management before executing the dlmcfgmgr utility. If the newly
added LUs have been removed from HDLM management,
reconfiguration of these LUs is not performed for the HDLM driver.
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After HDLM device reconfiguration is performed, executing the
dlmcfgmgr utility will not dynamically add LUs if one of the following
occurs:
-For the LU, you changed the LUN mapping, the mapping-destination
storage port, or the HBA port on the recognizing host.
-You mapped another logical device to a LUN of the storage port being
used by the configured LU (in Solaris 8 or Solaris 9).
-When adding a new LU, you allocated an existing instance number to
the path of the added LU.
-You dynamically added an HBA (in Solaris 8 or Solaris 9).
-The major or minor number of the sd or ssd device for an LU to be
newly added matches the major or minor number of an sd or ssd
device previously registered in HDLM.
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After HDLM device reconfiguration is performed, executing the
dlmcfgmgr utility will not dynamically delete LUs if one of the
following occurs:
-For the LU, you changed the LUN mapping, the mapping-destination
storage port, or the HBA port on the recognizing host.
-An upper-level program is using the LU you attempted to delete.
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In Solaris 8 or Solaris 9, if the HDLM driver configuration definition file
(/kernel/drv/dlmfdrv.conf) does not contain HDLM device
information, the dlmcfgmgr utility outputs the message and
terminates. In Solaris 10 or Solaris 11, all LUs are deleted from the
HDLM driver.
Utility Reference
7-19
Hitachi Dynamic Link Manager (for Solaris) User Guide