Hitachi Dynamic Link Manager Software Users Guide for AIX

Unmounts file systems and deactivates volume groups that are being
used by HDLM before deleting the hdisks that are recognized as HDLM
management-target devices or changing the status of those hdisks to
Defined.
-s
Prevents the confirmation message for unmounting and deactivating the
volume groups, when the -A parameter is specified.
-h
Displays the format of the dlmrmdev utility.
Note
Before executing the dlmrmdev utility, stop all processes and services using
the paths managed by HDLM. If you execute the dlmrmdev utility without
stopping the processes and services that are using the paths managed by
HDLM, hdisks recognized as HDLM management-target devices might not be
deleted completely or changed to the Defined status
Examples
In the following example, the utility unmounts the file system used by HDLM,
inactivates the volume group used by HDLM, and deletes all the hdisks
recognized as HDLM management-target devices:
# /usr/DynamicLinkManager/bin/dlmrmdev -A
KAPL10528-I The volume group will be made inactive, and the file
system that is using HDLM will be unmounted. Is this OK? [y/n]:y
hdisk3 is deleted
KAPL09012-I All HDLM drivers were removed.
In the following example, the utility displays Help:
# /usr/DynamicLinkManager/bin/dlmrmdev -h
Usage : dlmrmdev [[-e | -f] [-A [-s]] | -h]
dlmrmprshkey Utility for Clearing HDLM Persistent
Reservation (Shared-Host Methodology)
The dlmrmprshkey utility cancels persistent reservation (shared-host
methodology) on a specified volume.
Format
/usr/DynamicLinkManager/bin/dlmrmprshkey {-l hdisk-name | -h}
Parameters
-l hdisk-
name
Utility Reference
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Hitachi Dynamic Link Manager (for AIX) User Guide