ATTO  6GB ExpressSAS RAID Adapter Linux ReadMe

  1. Supported operating systems
  2. Supported architectures
  3. Supported adapters
  4. Installation instructions
  5. Loading the driver
  6. Advanced - Building the drivers manually
  7. Advanced - Configuring the driver to load at boot time
  8. Advanced - Optional Module Parameters
  9. Troubleshooting 64-bit driver installation
  10. Installing kernel source and other necessary packages
  11. Contact information

 

  1. Supported operating systems
    • Red Hat Enterprise Linux 4, 5
    • openSUSE 11.4
    • SUSE Linux Enterprise Server 10, 11
    • Fedora 12

 

  1. Supported architectures
    • i386 (with or without "CONFIG_REGPARM")
    • x86_64 (AMD64, Intel EM64T)

 

  1. Supported adapters
    • ATTO ExpressSAS R680
    • ATTO ExpressSAS R608
    • ATTO ExpressSAS R60F
    • ATTO ExpressSAS R644

 

  1. Installation instructions

NOTE: The kernel header files, make, and gcc must be installed. For details on how to do this, click here.

    • Unzip and untar the driver files with tar xfz lnx_drv_esasraid2_XXX.tgz
    • Enter the lnx_drv_esasraid2_XXX directory and run the install script install.sh.
    • After the driver is installed, it can be loaded automatically if desired.

 

  1. Loading the driver

Type the following to manually load the module:

$ modprobe esas2raid

You may receive a warning that the module will taint the kernel.

On SUSE 11, you may also receive an error message about "unsupported" drivers:

$ modprobe esas2raid
FATAL: module '/lib/modules/2.6.27.19-5-default/kernel/drivers/scsi/esas2raid.ko' is unsupported
Use --allow-unsupported or set allow_unsupported_modules to 1 in
/etc/modprobe.d/unsupported-modules

You can fix this problem by loading the driver with modprobe --allow-unsupported esas2raid or editing the file /etc/modprobe.d/unsupported-modules as described.


  1. Advanced - Building the drivers manually

Unzip and untar the driver files:

$ tar xfz lnx_drv_esasraid2_XXX.tgz

NOTE: Make sure there are no spaces in the path in which you extract the archive. The Linux kernel Makefile may fail if the path name contains a space character.

Make and install the modules (must be done as root):

$ cd lnx_drv_esasraid2_XXX.tgz/src
$ make install

NOTE: You need the kernel header files installed to build this driver. If the header files are in a non-standard location, you may need to modify the KDIR variable on the make command line, eg. make install KDIR=/path/to/kernel

The modules will now be installed and ready to use.

  1. Advanced - Configuring the driver to load at boot time

On some Linux distributions, the driver may not load automatically when the system is booted. To enable this behavior, try the following suggestions:

Recommended for Red Hat 4 & 5:

Add the following line to /etc/modprobe.conf after installing the driver:

alias scsi_hostadapterX esas2raid

Where X is the next available number.


Recommended for SUSE 10:

Add the following line to /etc/init.d/boot.local:

modprobe esas2raid

  1. Advanced - Optional Module Parameters

The following module parameter is supported by this driver:

    • event_log_mask (default 0) Logs error and informative messages to the kernel ring buffer. This value is a bit-mask of message categories; set to 0xFFFFFFFF to log all possible messages. This feature is mostly for debugging purposes and is not recommended for normal use.

There are also several other parameters available for tweaking. For documentation on these settings, read the file oswrap.c (look for "Module parameter definitions") or the output of the command modinfo esas2raid.ko.

  1. Troubleshooting 64-bit driver installation

On certain 64-bit platforms, the driver Makefile may be unable to detect the correct CPU architecture. In this instance, you will see an error similar to the following when attempting to compile the driver:

cc1 : error : CPU you selected does not support x86_64 instruction set

This can be resolved by specifying the correct architecture when running the make command, such as:

$ make install ARCH=x86_64

  1. Installing kernel source and other necessary packages

This driver requires that the kernel header files, make, and gcc be installed on the system.

For SUSE, use the YAST utility's "Software Management" module to install the "kernel-source", "gcc", and "make" packages.

For Red Hat, use the "Add/Remove Applications" utility to install the "Development Tools" packages. For details on installing the kernel source package, click here

Refer to your system documentation for further details.

  1. Contact information


You may receive customer service, sales information, and technical support by phone Monday through Friday, Eastern Standard Time 8:00 am to 6:00 pm, or by fax and web site 24 hours a day.

ATTO Technology, Inc.
155 CrossPoint Parkway
Amherst, New York 14068
Phone: (716) 691-1999
Fax: (716) 691-9353
www.attotech.com

ATTO Technology can also be reached via e-mail at the following addresses:

Sales Support: sls@attotech.com
Technical Support: techsupp@attotech.com