Chelsio Communications Chelsio T5 User's Guide download pdf (Page 113)

Chapter VII. iSCSI PDU Offload Target

Chelsio T5/T4 Unified Wire For Linux Page 113

4.4. The iSCSI Configuration File

The iSCSI configuration file consists of a series of blocks consisting of the following types of

iSCSI entity blocks:

1. global

2. target

There can be only one global entity block whereas multiple target entity blocks are allowed. The

global entity block is optional but there must be at least one target entity block.

An entity block begins with a block type (global or target). The content of each entity block is a

list of parameters specified in a "key=value" format. An entity block ends at the beginning of the

next entity block or at the end-of-file.

The parameter list in an entity block contains both:

iSCSI parameters that override the default values

Parameters that facilitate passing of control information to the iSCSI module

All lines in the configuration file that begin with “#” character are treated as comments and will

be ignored. White space is not significant except in key=value pairs.

For the “key=value” parameters the <value> portion can be a single value or a list of multiple

values. When <value> is a list of multiple values, they must be listed on one line with a comma

“,” to separate their values. Another way to list the values instead of commas is to list their

values as key=value pairs repeatedly, each on a new line, until they are all listed.

There are three categories of “key=value” parameter, the first category belongs to the global

entity block whereas the second and third categories belong to target and initiator entity blocks:

1. The Chelsio Global Entity Settings of key=value pairs

2. The iSCSI Entity Settings of key=value pairs

3. The Chelsio Entity Settings of key=value pairs

The following sub-sections describe these three categories and list in tables the details of their

key=value parameters.

4.4.1. Chelsio System Wide Global Entity Settings

Description

Chelsio System Wide Global Entity Parameters pass system control information to the iSCSI

software which affects all targets in the same way. More detail of these parameters below can

be found in a later section entitled “System Wide Parameters”.

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Chelsio Communications Chelsio T5 User's Guide Page 113