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VirtualBox 2.1.4 is a general-purpose full virtualizer for hardware. Targeted at server, desktop and embedded use, it is now the only professional-quality virtualization solution that is also Open Source Software. Presently, VirtualBox runs on Windows, Linux, Macintosh and OpenSolaris hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista), DOS/Windows 3.x, Linux (2.4 and 2.6), and OpenBSD. VirtualBox is being actively developed with frequent releases and has an ever growing list of features, supported guest operating systems and platforms it runs on. VirtualBox is a community effort backed by a dedicated company: everyone is encouraged to contribute while Sun ensures the product always meets professional quality criteria.
Some of the features of VirtualBox 2.1.4 are:
• Modularity. VirtualBox has an extremely modular design with well-defined internal programming interfaces and a client/server design. This makes it easy to control it from several interfaces at once: for example, you can start a virtual machine in a typical virtual machine GUI and then control that machine from the command line, or possibly remotely. VirtualBox also comes with a full Software Development Kit: even though it is Open Source Software, you don't have to hack the source to write a new interface for VirtualBox.
• Virtual machine descriptions in XML. The configuration settings of virtual machines are stored entirely in XML and are independent of the local machines. Virtual machine definitions can therefore easily be ported to other computers.
• Guest Additions for Windows and Linux. VirtualBox has special software that can be installed inside Windows and Linux virtual machines to improve performance and make integration much more seamless. Among the features provided by these Guest Additions are mouse pointer integration and arbitrary screen solutions (e.g. by resizing the guest window).
• Shared folders. Like many other virtualization solutions, for easy data exchange between hosts and guests, VirtualBox allows for declaring certain host directories as "shared folders", which can then be accessed from within virtual machines.
VirtualBox 2.1.4 (released 2009-02-16)
This is a maintenance release. The following ites were fixed and/or added :
* Windows hosts: fixed host crashes/hangs on certain 32 bits Windows systems when running Linux guests (bugs #1606, #2269, #2763)
* Windows hosts: Fixed network component BSOD issue (bugs #3168, #2916)
* Windows hosts: Fixed installation issues (bugs #2517, #1730, #3130)[C][/C]
* Linux hosts: fixed occasional kernel oopses (bug #2556)
* Linux hosts: fixed module dependency for shipped modules (bug #3115)
* Linux hosts: moved the udev rules for USB forward so that they don’t override existing system rules (bug #3143)
* Linux hosts: fixed the issue with guest not being able to communicate with each other when attached via TAP interfaces (bug #3215)
* Linux hosts: give up probing for USB gracefully if dbus or hal are not available (bug #3136)
* Linux hosts: fixed warnings in installer when SELinux was disabled (bug #3098)[C][/C]
* Linux hosts: VirtualBox sometimes failed to start if it had been started using sudo previously (bug #3270)
* Solaris hosts: fixed high CPU load while running many guests in parallel
* Solaris hosts: fixed inability to start more than 128 VMs
* VMM: fixed performance regression for Windows guests (bug #3172)
* VMM: ignore CPU stepping when restoring a saved state/snapshot
* REM: fixed inability to use gdb to debug programs in Linux guests with software virtualization (bug #3245)
* GUI: fixed dead key handling on Solaris hosts (bug #3256)
* GUI: in the shutdown dialog, disable the action send the shutdown signal if the guest is currently not using ACPI
* GUI: suppress additional key release events sent by X11 hosts when keys are auto-repeated (bug #1296)
* API: restore case insensitive OS type name lookup (bug #3087)
* VBoxHeadless: really don’t start X11 services (clipboard service, 3D acceleration; Solaris & Darwin hosts only; bug #3199)
* NAT: fixed occasional crashes when the guest is doing traceroute (non-Windows hosts; bug #3200)
* NAT: fixed crashes under high load (bug #3110)
* NAT: fixed truncated downloads (Windows hosts only, bug #3257)
* NAT: don’t intercept TFTP packages with a destination address different from the builtin TFTP server (bug #3112)
* USB: several fixes for USB passthrough on Linux hosts[C][/C]
* USB: reduced host CPU utilization if EHCI is active
* VRDP: fixed VRDP server black screen after a client reconnect (bug #1989)
* VRDP: modified rdesktop client (rdesktop-vrdp) now uses NumLock state synchronization (bug #3253)
* LsiLogic: make FreeBSD guests work (bug #3174)
* ATA: fixed deadlock when pausing VM due to problems with the virtual disk (e.g. disk full, iSCSI target unavailable)
* iSCSI: fixed possible crash when pausing the VM
* 3D support: added missing GL_MAX_TEXTURE_COORDS_ARB (bug #3246)
* Windows Additions: fixed ERROR (e0000101) error during installation (bug #1923)[C][/C]
* Windows Additions: fixed Windows Explorer hang when browsing shared folders with 64 bit guests (bug #2225)
* Windows Additions: fixed guest screen distortions during a video mode change
* Windows Additions: fixed the Network drive not connected message for mapped shared folders drives after the guest startup (bug #3157)
* Linux Additions: fixed occasional file corruption when writing files in O_APPEND mode to a shared folder (bug #2844)
* Linux Additions: the mouse driver was not properly set up on X.Org release candidates (bug #3212)
* Linux Additions: fixed installer to work with openSUSE 11.1 (bug #3213)
* Linux Additions: disable dynamic resizing if the X server is configured for fixed resolutions
* Linux/Solaris Additions: handle virtual resolutions properly which are larger than the actual guest resolution (bug #3096)
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