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Operating Systems

Submission + - DragonFly BSD to develop own filesystem

Submitted by Anonymous Coward
An anonymous reader writes: Matt Dillon has decided to develop a new filesystem from scratch to support DragonFly's clustering, rather than port an existing one. From his post: "There are currently two rough spots in the design. First, how to handle segment overflows in a multi-master environment. Such overflows can occur when the individual masters or slaves have different historical data retention policies. Second, where to store the regeneratable indexes."
Software

Submission + - QEMU Accelerator driver GPL'ed

Submitted by Jack
Jack writes: This driver, aka KQEMU, provides near-native performance when the guest and host architectures are identical (emulation of x86 guest on x86 host for instance). Without it the guest system remains desperately slow under QEMU.
While QEMU has always been open source, providing a free alternative to VMWare, KQEMU was previously distributed separately under a proprietary license. It is now available under the GPL version 2.
The announce on the developer's site is rather laconic and does not mention any specific reason for this change, but the recently discussed release of an open source edition of VirtualBox (which lacks important features, notably USB support and shared folders) may well have been an incentive to it.

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