instl_adm.4 (2012 03)

i
instl_adm(4) instl_adm(4)
(cfg string )
A boolean value that reflects whether the INDEX file selection referenced by string is the one
being used for this installation.
I/O Configuration
Some of the variables that control the I/O configuration process use special types of values. These value
types may also be used by some conditional expressions and other variables. These special I/O
configuration value types are:
Hardware Path (hw_path ):
For keywords that take a hardware path as an index parameter or a value, the hardware path
may be a series of more than one decimal or hexadecimal numbers separated by the period (
.)
or the forward slash (
/) characters. A complex string or string variable may also be used
where a hardware path is expected. A hardware path refers to a particular node in the system
I/O configuration (sometimes called the I/O tree). The hardware path value may be required to
refer to specific I/O node type for some variables. For example, the hardware path may need to
be an I/O adapter path or a disk device path. Note that hardware paths for mass storage dev-
ices (e.g. disks) in HP-UX 11.31 and later releases include: LUN hardware path, lunpath
hardware path and legacy hardware path types.
Physical Location (phys_loc ):
A physical location may be a series of alphanumeric values separated by the colon (:
) charac-
ter. This value indicates the actual physical device location (e.g. based on an enclosure and
bay number). Hardware paths for some I/O protocols vary from install to install. A physical
location is a human-readable value which consistently refers to a device based on where the
device is physically located in the system configuration. Physical location is not available for
all I/O protocol types. Physical location may not be available for all devices of a protocol type
even though it is available for some devices of that protocol type.
World-Wide Name / World-Wide Identifier (wwid):
A globally unique value specific to an individual device. The format of the value varies
depending on the protocol and the device. This value is often a standard IEEE value in hexa-
decimal format however this value may have some other format. The formats may vary widely
but should not contain white space. Rarely, old devices may not support a unique identifier
and a wwid value will be generated. Such a generated wwid value will not match from install
to install and recovery to recovery.
Device ID (device_id ):
This value is typically set by system administrators using tools like
scsimgr on HP-UX
B.11.31 and later releases (see scsimgr (1M)). As such, it is not guaranteed to be unique.
Ignite-UX will recognize this attribute and will use it to find a disk, but Ignite-UX tools like
save_config will not supply it. Use of this attribute is therefore discouraged.
Device Specifier (dev_spec ):
A method that combines the above four types into a single prioritized list of attributes that
refer to a disk. The format is a String, which means the entire method is surrounded by double
quotes. Tools that create this method determine the order of attributes, based upon which I/O
Protocol applies and what release is involved. Attributes are separated by white space and
the value part is surrounded by single quotes. Any embedded single or double quote characters
must be escaped. The following attributes are supported:
WWID=’wwid’
A disk with the specified World-Wide Identifier wwid is searched for.
PHYS_LOC=’phys_loc ’
A disk at the specified physical location phys_loc is searched for.
HW_PATH=’hw_path ’
A disk at the specified hardware path hw_path is searched for. Pattern matching expres-
sions are supported as the hw_path . Note that hw_path in HP-UX 11.31 should only
reference either the lunpath or legacy hardware path.
DEVICE_ID=’device_id ’
A disk with the device ID device_id is searched for.
These attributes can then be listed in a prioritized list, as in:
12 Hewlett-Packard Company − 12 − HP-UX 11i Version 3: March 2012