[News] 64 Petabyte Files in Linux; Linux in H-P Storage

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Tux3 Acting Like A Filesystem

,----[ Quote ]
| Daniel Phillips noted that his new Tux3 versioning filesystem is now 
| operating like a filesystem, "the last burst of checkins has brought Tux3 to 
| the point where it undeniably acts like a filesystem: one can write files, go 
| away, come back later and read those files by name. We can see some of the 
| hoped for attractiveness starting to emerge: Tux3 clearly does scale from the 
| very small to the very big at the same time. We have our Exabyte file with 4K 
| blocksize and we can also create 64 Petabyte files using 256 byte blocks." He 
| went on to discuss some of the remaining features yet to be implemented, 
| including atomic commits, versioning, coalesce on delete, a version of the 
| filesystem written in the kernel, extents, locking, and extended attributes.         


HP Aims to Take the Sting Out of Virtualized Storage

,----[ Quote ]
| HP has bundled its 4400 Scalable NAS File Services with its HP StorageWorks 
| 44000 Enterprise Virtual Array (EVA44000), file servers, management software 
| and support for both Windows and Linux to create this so-called shared data 
| architecture.   


H-P recently released another Linux filesystem under the terms of the GPL.


Tux3 Versioning Filesystem

,----[ Quote ]
| In his announcement email, Daniel noted that implementation work is
| underway, "much of the work consists of cutting and pasting bits of code I
| have developed over the years, for example, bits of HTree and ddsnap. The
| immediate goal is to produce a working prototype that cuts a lot of corners,
| for example block pointers instead of extents, allocation bitmap instead of
| free extent tree, linear search instead of indexed, and no atomic commit at
| all. Just enough to prove out the versioning algorithms and develop new user
| interfaces for version control."


UBI File System

,----[ Quote ]
| "Here is a new flash file system developed by Nokia engineers with help from 
| the University of Szeged. The new file-system is called UBIFS, which stands 
| for UBI file system. UBI is the wear-leveling/ bad-block handling/volume 
| management layer which is already in mainline (see drivers/mtd/ubi)," began 
| Artem Bityutskiy. He explained that UBIFS is stable and "very close to being 
| production ready", aiming to offer improved performance and scalability 
| compared to JFFS2 by implementing write-back caching, and storing a 
| file-system index rather than rebuilding it each time the media is mounted.        


Comparing UBIFS And LogFS

,----[ Quote ]
| Following the recent announcement that UBIFS is nearly production ready, it 
| was asked how UBIFS compares to LogFS. LogFS author Jörn Engel 
| suggested, "both share similar design goals. Biggest difference is that ubifs 
| works on top of ubi and depends on ubi support, while logfs works on plain 
| mtd (or block devices) and does everything itself. Code size difference is 
| huge. Ubi weighs some 11kloc, ubifs some 30, logfs some 8."     


Btrfs v0.14 Released

,----[ Quote ]
| Btrfs v0.14 is now available for download.  Please note the disk format has 
| changed, and it is not compatible with older versions of Btrfs.

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newsgroups3 (79677)
9/5/2008 11:19:02 AM
comp.os.linux.advocacy 124139 articles. 3 followers. Post Follow

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