Open-iSCSI is a high-performance, transport independent, multi-platform
implementation of RFC3720 iSCSI.

Open-iSCSI is partitioned into user and kernel parts.

The kernel portion of Open-iSCSI is a from-scratch code licensed under
GPL. The kernel part implements iSCSI data path (that is, iSCSI Read
and iSCSI Write), and consists of two loadable modules: iscsi_if.ko and
iscsi_tcp.ko.

User space contains the entire control plane: configuration manager,
iSCSI Discovery, Login and Logout processing, connection-level error
processing, Nop-In and Nop-Out handling, and (in the future:) Text
processing, iSNS, SLP, Radius, etc.

The user space Open-iSCSI consists of a daemon process called iscsid,
and a management utility iscsiadm.

This package contains the tools needed to use Linux on the S/390:
dasdfmt - low-level format tool for ECKD DASDs fdasd - partitions
ECKD DASDs with z/OS compatible disk layout zipl - boot loader and
dump DASD initializer zgetdump - tool to get linux system dumps from
DASDs

saftemon reads disk enclosure status information from SAF-TE (SCSI
Accessible Fault Tolerant Enclosures). SAF-TE is a component of SES
(SCSI Enclosure Services) which is common on most SCSI disk enclosures
these days. saftemon can monitor multiple SAF-TE devices and will
automatically detect them.

The information retrieved includes power supply, temperature, audible
alarm, drive faults, array critical/failed/rebuilding state and door
lock status. saftemon logs changes in the status of these enclosure
elements to syslog and can optionally execute an alert help program
with details of the component failure.

Hard disks are the most commonly replaced system elements, and are
therefore a critical consideration for improving availability. Root
Disk Mirroring (RAID-1) is the technique of using redundant disks to
record multiple copies of the data so that one disk failure will not
cause data loss.

This project includes changes that enhance the Reliability,
Availability, and Serviceability (RAS) of the drivers that are commonly
used in a Linux software RAID-1 configuration. Other efforts have been
made to enable various common hardware RAID adapters and their drivers
on Linux.

The tools in this project were designed to add to the serviceability of
SCSI devices under Linux so that the system does not have to be
rebooted or taken out of service to perform common maintenance or
service functions. This project has user-space and kernel level
components:

sgraidmon - a tool to monitor software RAID disks for
hot-insertion/removal; Note that this uses raidtools like mdadm to
re-configure the new disk. sgdefects - a tool to read the primary and
grown defect lists sgdskfl - a tool to load disk firmware to SCSI disks
under Linux; some sample firmware images are included in the package
sgmode - a tool to get and set SCSI device mode pages; some sample mode
page definition files are included in the package sgdiag - a tool to
perform format and other diagnostic functions

The scsiras patches are not currently included in our kernel.

SCSI disk parameters are held in mode pages. This utility lists or
changes those parameters. Other SCSI devices (or devices that use the
SCSI command set) such as CD/DVD and tape drives may also find parts of
sdparm useful. Requires the linux kernel 2.4 series or later. In the
2.6 series any device node the understands a SCSI command set may be
used (e.g. /dev/sda). In the 2.4 series SCSI device node may be used.

Warning: It is possible (but unlikely) to change SCSI disk settings
such that the disk stops operating or is slowed down. Use with care.

The sg3_utils package contains utilities that send SCSI commands to
devices. As well as devices on transports traditionally associated with
SCSI (e.g. Fibre Channel (FCP), Serial Attached SCSI (SAS) and the SCSI
Parallel Interface(SPI)) many other devices use SCSI command sets.
ATAPI cd/dvd drives and SATA disks that connect via a translation layer
or a bridge device are examples of devices that use SCSI command sets.

The smp_utils package contains utilities for the Serial Attached SCSI
(SAS) Management Protocol (SMP). Most utilities correspond to a single
SMP function, sending out a request, checking for errors and if all is
well processing the response. The response is either decoded, printed
out in ASCII hexadecimal or sent as binary to stdout.

This package's purpose is to provide a library for interfacing with the
kernel's sys filesystem mounted at /sys. The library was an attempt to
create a stable interface to sysfs, but it failed. It is still provided
for the current users, but no new software should use this library.

Linux target framework (tgt) aims to simplify various SCSI target
driver (iSCSI, Fibre Channel, SRP, etc) creation and maintenance.

Tgt consists of kernel modules, user-space daemon, and user-space
tools. Some target drivers uses all of them and some use only
user-space daemon and tools (i.e. they completely runs in user space).

NetBSD's ash (Almquist sh) for Linux is a small (62K--no job control)
Bourne-compatible shell. It is great for machines with low memory, but
does not provide all the extras of shells like bash, tcsh, and zsh.
Most shell scripts are compatible with bash. Note that most scripts
written for Linux use some bash-specific syntax. The Slackware setup
scripts are a notable exception, because ash is the shell used during
installation.