HP XP P9500 Storage - Manual (Page 323)

The paths existing when the HBAs were replaced remain in Offline(E)
status.
2
.
Execute the dlmcfgmgr utility (dlmcfgmgr -v) to check the HDLM device
status.
Because the paths existing when HBAs were replaced are in Offline(E)
status, a hyphen (-) is displayed for Device.
3
.
Execute the dlmcfgmgr utility (dlmcfgmgr -u) to delete the old
information about paths and SCSI devices.
In the -u parameter, specify an HDevName device for which a hyphen (-)
is displayed for Device in step 2. Note that you need to execute the utility
for each HDevName device for which a hyphen (-) is displayed for Device.
The following shows an example of the command you execute if the
HDevName value is /dev/sddlmaa:
# dlmcfgmgr -u /dev/sddlmaa
4
.
Execute the dlmcfgmgr utility (dlmcfgmgr -v) to confirm that all the lines
on which a hyphen (-) was displayed for Device have been deleted.
HDLM Operation
4-27
Hitachi Dynamic Link Manager User Guide (for Linux(R))