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The Linux 2.4 SCSI subsystem HOWTO

Douglas Gilbert


      
     

Copyright © 2001, 2002, 2003 Douglas Gilbert

2003-05-04

Revision History
Revision 2.02003-05-04Revised by: dpg
lk2.4.20, linuxdoc->tldp, sATA and SAS, last sector on raw devs, blockdev
Revision 1.92002-11-20Revised by: dpg
convert to xml, lk2.4.19, spelling
Revision 1.82002-05-05Revised by: dpg
scsihosts comma delimiter, grub+lilo
Revision 1.72002-04-27Revised by: dpg
mkinitrd, scsi_debug, 2.4.18, more ATAPI
Revision 1.62002-01-26Revised by: dpg
ATAPI cdrom selection
Revision 1.52001-12-21Revised by: dpg
16 byte SCSI commands, SCSI_IOCTL_GET_PCI
Revision 1.42001-08-26Revised by: dpg
spelling, dd_rescue, mkinitrd example, lk 2.4 changes, 1394.
Revision 1.32001-08-26Revised by: dpg
ATAPI CDROM section, alter title, U320, iSCSI.
Revision 1.22001-03-25Revised by: dpg
Information about scu, dt, "Alt" sequences, more notes.
Revision 1.12001-01-22Revised by: dpg
Add osst description, _EXTRA_DEVS limitations.

This document describes the SCSI subsystem as the Linux kernel enters the 2.4 production series. An external view of the SCSI subsystem is the main theme. Material is included to help the system administration of the Linux SCSI subsystem. There are also brief descriptions of ioctl()s and interfaces that may be relevant to those writing applications that use this subsystem.

Table of Contents
1. Introduction
2. Architectural Overview
3. Names and Addresses
3.1. SCSI Addressing
3.2. Device Names
3.3. Device Names in devfs
3.4. Device Names in scsidev
4. Kernel Configuration
5. Boot Parameters
6. Modules and their Parameters
7. Proc pseudo file system
8. Mid Level, Unifying layer
8.1. boot parameters
8.2. module parameters
8.3. proc interface
9. Upper level drivers
9.1. Disk driver (sd)
9.2. CDROM driver (sr or scd)
9.3. Tape driver (st)
9.4. Generic driver (sg)
10. Lower Level drivers
10.1. Pseudo drivers
11. Raw devices
12. Devfs pseudo file system
A. Common bus types (SCSI and other)
B. Changes between lk 2.2 and (during) 2.4
B.1. Mid level changes
B.2. sd changes
B.3. sr changes
B.4. st changes
B.5. sg changes
B.6. Changes during the lk 2.4 series
C. Troubleshooting
D. Performance, Test and Debugging tools
E. Compile options and System calls including ioctls
E.1. Mid level
E.2. sd driver
E.3. sr driver
E.4. st driver
E.5. sg driver
F. References, Credits and Corrections
  Next
  Introduction

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   This document, LDP HOWTO-INDEX, is copyrighted (c) 1995 - 2002 by Tim Bynum, Guylhem Aznar, Joshua Drake and Greg Ferguson. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is available at http://www.gnu.org/copyleft/fdl.html. If you have questions, please contact the LDP.
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