man/man3stmf/stmfModifyLu.3stmf

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 STMFMODIFYLU 3STMF "May 8, 2009"
 NAME
stmfModifyLu, stmfModifyLuByFname - modify a logical uni
 SYNOPSIS

cc [ flag... ] file... -lstmf [ library... ]
#include <libstmf.h>

int stmfModifyLu(stmfGuid *luGuid, uint32_t prop, const char *propVal)


int stmfModifyLu(uint16_t dType, const char *fname, uint32_t prop,
 const char *propVal)


 PARAMETERS
luGuid

The guid of logical unit to modify.


fname

The filename of logical unit to modify.


dType

Type of logical unit. See stmfCreateLuResource(3STMF).


prop

A property type value. See DESCRIPTION for valid values.


propVal

A property value.


 DESCRIPTION

The stmfModifyLu() and stmfModifyLuByFname() functions modify the
properties of a logical unit device.

Valid properties for modify STMF_DISK:
STMF_LU_PROP_ALIAS

Up to 255 characters representing a user defined name for the device.
Default: Set to file name of backing store.


STMF_LU_PROP_SIZE

Numeric value with optional suffix (for example, 100G, 1T) to specify unit of
size.
Default: Size of device specified in the STMF_LU_PROP_DATA_FILENAME
property value.


STMF_LU_PROP_WRITE_CACHE_DISABLE

Write back cache disable. When specified as "true" or "false", specifies write
back cache disable behavior.
Default: Writeback cache setting of the backing store device specified by
STMF_LU_PROP_DATA_FILENAME.


STMF_LU_PROP_WRITE_PROTECT

Write protect bit. When specified as "true" or "false", specifies whether the
device behaves as a write protected device.
Default: "false"


 RETURN VALUES

The following values are returned:
STMF_STATUS_SUCCESS

The API call was successful.


STMF_ERROR_INVALID_ARG

Either prop or propVal is unrecognized.


STMF_ERROR_INVALID_PROPSIZE

The size of propVal is invalid.


STMF_ERROR_NO_PROP

The value of prop is unknown for this resource type.


 ATTRIBUTES

See attributes(7) for descriptions of the following attributes:


ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Committed
MT-Level Safe


 SEE ALSO

 libstmf (3LIB),  stmfCreateLuResource (3STMF),  attributes (7)