HP Hitachi Dynamic Link Manager Software - Manual (Page 384)

iLU HDevName Device PathID Status
0090 sddlmad /dev/sda 000004 Online
/dev/sdd 000005 Online
/dev/sdj 000008 Online
/dev/sdg 000009 Online
0091 sddlmac /dev/sdb 000006 Online
/dev/sde 000007 Online
/dev/sdh 000010 Online
/dev/sdk 000011 Online
0092 sddlmaa /dev/sdc 000000 Online
/dev/sdf 000001 Online
/dev/sdi 000002 Online
/dev/sdl 000003 Online
KAPL01001-I The HDLM command completed normally. Operation name
= view, completion time = yyyy/mm/dd hh:mm:ss
Note that LUs that are not managed by HDLM are not output. Therefore,
configure the setting so that the LUs are managed by HDLM before the
check.
9
.
Access the HDLM device whose name was changed, and then check that
the HDLM device can be used.
Check that applications that access the HDLM device whose name was
changed are running normally.
About Creating a New HDLM Device
While restarting the host, HDLM may detect a new path. The HDLM device to
be allocated depends on whether the SCSI device for the detected path is
already registered or a new SCSI device is registered. This section describes
a situation where the HDLM device that is to be allocated to the newly
detected path is already registered and a situation where a new HDLM device
is created.
If the SCSI device of the new path that HDLM detected is already registered,
the HDLM device mapped with the path already registered is allocated. For
example, if the path between the host and an LU of the storage system
already exists and a new path is added, the HDLM device that already exists
is allocated to the path.
If the SCSI device of the new path that HDLM detected is not yet registered,
a new HDLM device is allocated to the path. For example, if you define a new
path from the host to an LU of the storage system, a new HDLM device is
allocated to the path. The lowest available alphabetical letter is allocated as
the logical device file name of the HDLM device.
Examples of the logical device file names for HDLM devices when a new HDLM
device is allocated are shown in the following table.
Table 4-5 Example: Allocation of New HDLM Devices
Allocation before
restarting the host
Allocation after restarting the host
none /dev/sddlmaa #
4-52
HDLM Operation
Hitachi Dynamic Link Manager User Guide for Linux ®