HP XP P9500 Storage - Manual (Page 343)

device(s) not in use (or, represented with a hyphen (-)) to release the
available name(s) to create an HDLM device file for the new LU.
Even if you add a path to an HDLM device that is not managed by HDLM and
restart the host, the HDLM device will not be managed by HDLM.
An AutoPATH_ID is allocated sequentially as the HDLM recognizes a SCSI
device during start up of the host. Therefore, an AutoPATH_ID for the same
path may change whenever the host starts.
If a different LU is allocated to the same path name, a new HDLM device will
be allocated to the newly allocated LU after restarting the host restarts. In
such case, the previous HDLM device is unregistered automatically.
Note on adding a BladeSymphony I/O drawer
When you restart the host after adding a BladeSymphony I/O drawer # , and if
you execute the HDLM-configuration definition utility (dlmcfgmgr -v), a
hyphen (-) might be displayed in the Device column of the execution results.
# dlmcfgmgr -v
HDevName Management Device Host Channel Target
Lun
/dev/sddlmaa configured /dev/sde 2 0 0
1
- 0 0 0
0
/dev/sda 1 0 0
0
/dev/sddlmab configured - 0 0 0
1
/dev/sdf 2 0 0
2
/dev/sdb 1 0 0
1
KAPL10302-I /sbin/dlmcfgmgr completed normally.
To change to a status that does not display a hyphen, execute the dlmcfgmgr
utility with the -u parameter specified.
For details on the dlmcfgmgr utility, see dlmcfgmgr Utility for Managing the
HDLM Configuration on page 7-22 .
#
An I/O drawer is considered added in either of the following situations:
¢
When adding an I/O drawer to the host
¢
When adding an HBA to an I/O drawer that is already connected to
the host
HDLM Operation
4-47
Hitachi Dynamic Link Manager User Guide (for Linux(R))