Free software raid software for linux

Mandrakelinux 10.1 Official is the branch of the operating system dedicated to those who want an advanced and well-stabilized Linux system.
10.1 Official provides unparalleled hardware support together with extended integration of mobile and wireless technologies such as Bluetooth and WIFI.
Other key features include GNOME 2.6, enhanced laptop support and new compilers for even greater performance. Users keen on all things "Advanced" need not look any further.
Mandrake 10.1 Official includes the following major software:
- Linux Kernel 2.6.8 (and various fixes from 2.6.9rc)
- Xorg 6.7.0
- KDE 3.2.3
- GNOME 2.6
- Glibc 2.3.3, GCC 3.4.1
- Apache 2.0.50, PHP 4.3.8
- MySQL 4.0.18, Samba 3.0.6
- Mozilla 1.7.2, GIMP 2.0.4
- OpenOffice.org 1.1.3
Main features:
- A mostly automated installation procedure
- On the desktop: Mandrakegalaxy II, and MagicDev
- Improved configuration, extended hardware support
- Simplified system maintenance
- All the best Office & Internet applications
- Multimedia and games
- Servers, Internet and Intranet services
- Easy Printing with CUPS
- Top-level Security
- Everything for Development
- Available in more than 60 languages
- Supported hardware
- All available packages
- Prices and ordering
A mostly automated installation procedure:
- The graphical installer offers a modern look & feel with consistent layout and anti-aliased fonts.
- The default installation process is mostly automated. The individual phases are highly intuitive, and most hardware devices are automatically recognized and configured. Power users can access advanced configuration options at any point of the installation.
- The type of installation can be tailored as a desktop or server-oriented system by choosing from various package group categories.
- Installation is possible by various methods such as Network installation, CD or DVD installation.
- More than 50 languages are supported during installation.
- In addition to being able to resize NTFS partitions, the installation procedure provides many unique features such as offering various file systems (including journalized file systems EXT3, ReiserFS, XFS, and encrypted file systems), setting up RAID disks, and resizing MS-Windows FAT32 partitions.
- Various network file systems are also supported such as NFS, SMB and WebDAV.
- The "auto-install" tool is a convenient way to effortlessly duplicate server and workstation installations.
- An easy-to-use rescue mode is available in case of any problems with a system.

Bontmia was written by John Enok Vollestad in april 2003 to merge the functionality of glastree and rsync in one application with a more flexible selection of long term storage. It has later gone through some changes to enhance usability
Main features:
Cost
- Tapes cost more than disks and require a tape-drive and possibly also a tape robot.
Reliability
- Disks have a higher MTBF than tapes and they require a tape drive of the same type. Disks can increase MTBF by being connected together to form RAID. Tapes can not. Incremental backup on a disk or a RAID volume does not change the MTBF while incremental backup on tape drastically lower the MTBF. Sometimes tapes written in one drive is difficult to read in another drive. This is a silent error if you do not test the tapes no and then. No such thing on file systems like ReiserFS.
Location
- Tapes is removable media and thereby avoiding the risk of localized disasters. A network connection does the same.
Time
- Copying just the changes gives a fast and efficient backup. Tape drives are very slow. Often slower than the network. Remote backup will therefore usually go faster to disk. Faster backup and efficient storage means one can do backup more often. Once every hour is usually not a problem. This also means rapid restore which is even more important.
Space
- Tapes split the data needlessly since they can not be used with RAID to form bigger volumes as disks can. Using hard-links on a file system gives very good storage efficiency and availability as ordinary file systems with random access.
- There is a lot of remote backup software out there. I wrote Bontmia since I could not find one that did all that I wanted.
Bontmia Functionality
- Each backup is a complete "snapshot" of the backed up directories.
- Files that is not changed since the last backup does not take up extra space and is not transferred over the network.
- Preserves a configurable selection of backups in a similar manner as tape rotation schemes.
- Remote backup is done encrypted over ssh for security reasons.
- Each backup is stored with absolute path.
- It is possible to limit the bandwidth to avoid affecting production systems.
- Support copying files, directories, device files, named pipes, symlinks and hard-links.
- Preserves user id, group id and permissions for all types of files.
Enhancements:
- Added support for specifying the directory for temporary files.

Mandriva Linux is the operating system of choice for users keen on all things advanced.
Linux power users will welcome the advanced Web experience, enhanced hardware compatibility and expanded development options brought by Limited Edition 2005, along with significant performance gains. Firefox 1.0.2 offers the most advanced Web browsing experience, with multi-tabbed navigation, pop-up blocking, increased speed, and unmatched security.
Limited Edition also offers the RSS reader Akregator. RSS is a format used to simplify the aggregation and syndication of Web content. RSS feeds contain news and updates from websites and blogs, providing personalized access to information.
Limited Edition 2005 is built to optimize and increase performance. It has been developed with x86-64 technology in mind, which allows for the use of more powerful applications. Support for dual-core technology adds to potential performance, allowing the use of advanced new processors.
Developers and power users running demanding multimedia configurations will appreciate the additional power those features provide. Some special optimizations enhance the overall speed delivered by the system. For instance, KDE 3.3 is 10% faster, thanks to special tuning by Mandriva.
Addressing both the x86 and x86-64 architectures, Limited Edition 2005 is the only Linux system to allow the seamless installation and running of 32-bit applications on 64-bit platforms. This will allow users to benefit from all the power and performance of 64-bit technology while continuing to use vital 32-bit applications.
Developers will welcome the ability to develop 32-bit and 64-bit versions of the same application on the same machine, without the need to use chroot. Finally, Limited Edition allows you to copy the contents of the DVD to the hard disk during installation, removing the need to use the DVD for subsequent software installation, and so saving even more time.
Limited Edition 2005 provides better support for removable devices such as digital cameras, CD-ROM drives and USB keys through immediate detection of devices as they are plugged in, and by allowing you to boot the installation from a USB key.
Also available is DKMS which allows kernel modules to be dynamically built for each kernel on your system in a simplified and organized fashion.
A special feature that will certainly appeal to gamers and enthusiasts is that the new release from Mandriva has support for the Xbox console, empowering users to bridge the divide between gaming and other computer activities.
Additional hardware enhancements include full support for Adaptec Host RAID controllers (RAID, SCSI, SATA) and extended recognition for the most recent flat screen monitors, including widescreen resolutions.
Main features:
The latest versions of key Linux applications
- Linux kernel 2.6.11.6
- KDE 3.3.2 (with some backports from version 3.4, including Kpdf)
- GNOME 2.8.3
- Firefox 1.0.2
- GCC 3.4.3
- The GIMP 2.2
- cdrecord 2.01.01a21 (with DVD+R dual-layer support)
- OpenOffice.org 1.1.4
- MySQL 4.1.11
Enhanced Hardware support
- Unequalled x86-64 support, including seamless installation of a 32-bit environment on the 64-bit platform, allowing developers to build 32-bit and 64-bit applications on the same system
- Full support for Adaptec Host RAID controllers (RAID, SCSI, SATA)
- Improved recognition of removable devices, such as digital cameras, CD-ROM drives and USB keys
- Improved support for the most recent flat screen monitors, including widescreen resolutions
- Simplified handling of drivers thanks to the integration of Dynamic Kernel Module Support (DKMS), enabling the changing of drivers without the need to reinstall the Kernel, and the ability to use the same driver on multiple different kernel revisions
- Support for multimedia keyboards
Faster
- Up to 10% greater KDE performance thanks to compilation with the fvisibility option
- The option to copy all software packages onto the hard disk during the installation, making it unnecessary to use the DVD for subsequent software installation
Advanced Web experience
- Firefox 1.0.2 offers the most advanced Web browsing experience, with multi-tabbed navigation, pop-up blocking, increased speed, and unmatched security.
- RSS reader Akregator to get personalized access to the content of websites from all around the globe.
Enhanced mutimedia capabilities
- ndiswrapper allows for easier wireless networking configuration, thanks to the utilization of installed Windows drivers
- Mandrivas new ALSA (Advanced Linux Sound Architecture) version includes multiplexing, allowing you to listen to sound from several applications at once, even if your sound card does not perform multiplexing in hardware.

qgreylistrbl is an add-on for qmail.

Now there are a lot of methods against spam, I have combined two of them: greylisting only for dialin nodes and nodes listed on a RBL. NDNs with more than one recipient will be rejected with permanent error messages and without a greylist entry. A test for EHLO/HELO spoofing was added: if a string is obviously spoofed, the connection will be rejected with a permanent error message, without a greylist entry, and advice to RFC2821. You can define a maximum number of recipients per email.

Greylisting returns a temporary SMTP error at the first delivery attempt. Most spam is sent from bulk mailers that dont retry, so these attempts are blocked. Real mail servers will retry later after a temporary error, allowing the message to go through.

Of course cannot all mail be delayed half an hour or longer to our customers. Thats why I have decided to modify the program qgreylist from Jon Atkins. I have added a RBL request to accept emails from not RBL listed nodes and to delay only dialin lines and RBL listed nodes. The script tests the PTR record of each connecting host for a regular expression to detect dialin nodes.

qgreylist from Jon Atkins puts all files in one base dir. qgreylistrbl creates here a directory structure because of performance reasons. The cleanup is now done by a separate cronjob script and not by qgreylistrbl itself, because when there were some ten thousand files inside the mail server nearly stands still.

Most bulk mailers and zombies,too, do not have queue management. They blast that much emails out into the net, they would be swamped with it. An Example: We use a UW-160 Raid 10 for the queue, but the usual zombie out there has only one IDE disc. Beside even a layman would ask why his hard drive was running all the time.

Effect

80% less spam. Yes, truly. No false positives, NO email gets lost.

Usage

qgreylistrbl is a replacement for rblsmtpd by D.J. Bernstein. Simply put qgreylistrbl instead of rblsmtpd in the command line for starting qmail-smtpd.

Performance

qgreylistrbl is a Perl script. Expect some CPU usage. If you run a QMAILQUEUE-patched version of qmail-smtpd and spamassassin, the load will decrease extensive, because most connection attempts do not cause a mail delivery. With perl > 5.6.1 you can precompile the source code with perlcc.

Installation:

Just copy the perl script wherever you want and edit the start script for qmail-smtpd. qgreylistrbl is a simple replacement for rblsmtpd from D.J. Bernstein and can be used the same way.

Create the greylist IP folder:

# mkdir /var/qmail/qgreylistrbl
# chown qmaild /var/qmail/qgreylistrbl

Adjust User

If you need to install the perl module Mail:RBL, just do the following:
From the root prompt on your server, invoke the CPAN shell:

# perl -MCPAN -e shell

Once the Perl interpreter has loaded (and been configured), you can install modules by issuing the command install MODULENAME.

The first thing you should do is upgrade your CPAN:

cpan> install Bundle::CPAN

Once its done (it will take a while, just enter all questions), type:

cpan> reload cpan

Now, enter the following command to retrieve all of the required modules:

cpan> install Mail::RBL

Then you can be shure everything is installed to correct locations.

Configuration:

At the beginnung of the script you have to adjust a few variables. See script for more details. Important are hostname, working directory, some paths and RBL services. You have to add a crontab entry as follows:

*/20 * * * * vpopmail /var/qmail/bin/qgreylist_cleanup.pl

Adjust user, path and time before.
Dont forget so set up logging facility in /etc/syslog.conf

Billing Software project allows your business to track invoicing and allows your customers to view their invoices online and easily export them to Excel for saving or printing.
Invoices can also be emailed to customers right from the online application for convenience and efficiency.
Enhancements:
- This release fixes some minor bugs in the XML portions of the library files.

Source Mage GNU/Linux distribution is based on a sorcerous metaphor of "casting" and "dispelling" packages, which we refer to as "spells".
This is a development ISO and potentially loaded with bugs and glitches. This is where you come in. We need your help to squash these bugs.
Please download, burn, and install this ISO to a spare partition, extra computer, or over your least favorite friends Windows partition. VMWare or bochs works too. Upon finding a glitch, please report it in bugzilla. No bug is too small, or too large.
Help shape the future of Source Mage! Download the Next Generation Testing ISO and install!
Enhancements:
- A "dependency" scheme was added to make sure you dont accidentally skip a vital step or do things in the wrong order.
- You can still override dependencies if you really know what youre doing.
- Spells are now installed in the background while you are busy selecting options.
- Software RAID support via mdadm was added.

FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon 64, and EM64T), IA-64, PC-98, Alpha/AXP and UltraSPARC architectures.
It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.
FreeBSD offers advanced networking, performance, security and compatibility features today which are still missing in other operating systems, even some of the best commercial ones.
FreeBSD makes an ideal Internet or Intranet server. It provides robust network services under the heaviest loads and uses memory efficiently to maintain good response times for thousands of simultaneous user processes.
The quality of FreeBSD combined with todays low-cost, high-speed PC hardware makes FreeBSD a very economical alternative to commercial UNIX workstations. It is well-suited for a great number of both desktop and server applications.
FreeBSD can be installed from a variety of media including CD-ROM, DVD-ROM, floppy disk, magnetic tape, an MS-DOS partition, or if you have a network connection, you can install it directly over anonymous FTP or NFS.
While you might expect an operating system with these features to sell for a high price, FreeBSD is available free of charge and comes with full source code.
It is easy to contribute to FreeBSD. All you need to do is find a part of FreeBSD which you think could be improved and make those changes (carefully and cleanly) and submit that back to the Project by means of send-pr or a committer, if you know one. This could be anything from documentation to artwork to source code.
Even if you are not a programmer, there are other ways to contribute to FreeBSD. The FreeBSD Foundation is a non-profit organization for which direct contributions are fully tax deductible.
Main features:
- A merged virtual memory and filesystem buffer cache continuously tunes the amount of memory used for programs and the disk cache. As a result, programs receive both excellent memory management and high performance disk access, and the system administrator is freed from the task of tuning cache sizes.
- Compatibility modules enable programs for other operating systems to run on FreeBSD, including programs for Linux, SCO UNIX, and System V Release 4.
- Soft Updates allows improved filesystem performance without sacrificing safety and reliability. It analyzes meta-data filesystem operations to avoid having to perform all of those operations synchronously. Instead, it maintains internal state about pending meta-data operations and uses this information to cache meta-data, rewrite meta-data operations to combine subsequent operations on the same files, and reorder meta-data operations so that they may be processed more efficiently. Features such as background filesystem checking and file system snapshots are built on the consistency and performance foundations of soft updates.
- File system snapshots, permitting administrators to take atomic file system snapshots for backup purposes using the free space in the file system, as well as facilitating background fsck, which allows the system to reach multiuser mode without waiting on file system cleanup operations following power outages.
- Support for IP Security (IPsec) allows improved security in networks, and support for the next-generation Internet Protocol, IPv6. The FreeBSD IPSEC implementation includes support for a broad range of accelerated crypto hardware.
- Out of the box support for IPv6 via the KAME IPv6 stack allows FreeBSD to be seamlessly integrated into next generation networking environments. FreeBSD even ships with many applications extended to support IPv6!
- Multi-threaded SMP architecture capable of executing the kernel in parallel on multiple processors, and with kernel preemption, allowing high priority kernel tasks to preempt other kernel activity, reducing latency. This includes a multi-threaded network stack and a multi-threaded virtual memory subsystem. With FreeBSD 6.x, support for a fully parallel VFS allows the UFS file system to run on multiple processors simultaneously, permitting load sharing of CPU-intensive I/O optimization.
- M:N application threading via pthreads permitting threads to execute on multiple CPUs in a scaleable manner, mapping many user threads onto a small number of Kernel Schedulable Entities. By adopting the Scheduler Activation model, the threading approach can be adapted to the specific requirements of a broad range of applications.
- Netgraph pluggable network stack allows developers to dynamically and easily extend the network stack through clean layered network abstractions. Netgraph nodes can implement a broad range of new network services, including encapsulation, tunneling, encryption, and performance adaptation. As a result, rapid prototyping and production deployment of enhanced network services can be performed far more easily and with fewer bugs.
- TrustedBSD MAC Framework extensible kernel security, which allows developers to customize the operating system security model for specific environments, from creating hardening policies to deploying mandatory labeled confidentiality of integrity policies. Sample seucrity policies include Multi-Level Security (MLS), and Biba Integrity Protection. Third party modules include SEBSD, a FLASK-based implementation of Type Enforcement.
- GEOM pluggable storage layer, which permits new storage services to be quickly developed and cleanly integrated into the FreeBSD storage subsystem. GEOM provides a consistent and coherrent model for discovering and layering storage services, making it possible to layer services such as RAID and volume management easily.
- FreeBSDs GEOM-Based Disk Encryption (GBDE), provides strong cryptographic protection using the GEOM Framework, and can protect file systems, swap devices, and other use of storage media.
- Kernel Queues allow programs to respond more efficiently to a variety of asynchronous events including file and socket IO, improving application and system performance.
- Accept Filters allow connection-intensive applications, such as web servers, to cleanly push part of their functionality into the operating system kernel, improving performance.

Linux NTFS provides Linux kernel drivers, a multiplatform NTFS library, and tools to create, resize, clone, rescue, query, label and fix NTFS volumes, and to undelete, resize, list, and query files for the filesystem used by Windows XP, 2003, 2000, NT4, and Longhorn.
Linux NTFS also provides support for the Logical Disk Manager (LDM) that controls Windows Dynamic Disks and is used to create software mirrors, stripes, and RAID.
Enhancements:
- Many improvements and fixes were made for all known problems to ntfsmount, ntfscluster, mkntfs, ntfsclone, ntfsinfo, and libntfs.