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[News] Deduplication May Comes to Linux Filesystems

  • Subject: [News] Deduplication May Comes to Linux Filesystems
  • From: Roy Schestowitz <newsgroups@xxxxxxxxxxxxxxx>
  • Date: Mon, 07 Dec 2009 20:37:13 +0000
  • Followup-to: comp.os.linux.advocacy
  • Newsgroups: comp.os.linux.advocacy
  • User-agent: KNode/4.3.1
Hash: SHA1

Deduplication for the masses

,----[ Quote ]
| What about the rest of us? Smaller businesses 
| will have to wait. There's a lot of voices 
| calling for a Linux-based deduping file 
| system - there's even one, lessfs, under 
| development but it's still in beta, and I 
| wouldn't trust my backups to a beta-level 
| file system - would you?
| But the signs are that Linux will sprout at 
| least one such add-on and may eventually 
| include such functionality in the kernel. The 
| problem is that enterprise-level data is 
| hugely expensive because it meeds to be 
| surrounded by management software, by 
| redundant components and by other subsystems 
| that ensure that not a single bit is lost. 
| That makes deduping, rather than buying more 
| storage, economically viable.


2.6.32 is Out! But a Word of Caution Around CFQ

,----[ Quote ]
| In the 2.6.32 kernel there was a change to 
| the CFQ default behavior to help improve 
| interactiveness which is typically important 
| for desktops and laptops or anything where 
| something like media playback is important. 
| However, this can have an impact on IO 
| throughput performance. The author of CFQ, 
| Jens Axboe, has a good discussion of the 
| changes in an article on lwn.



Linux Kernel 2.6.32 Improves the Btrfs Filesystem

,----[ Quote ]
| None other than the father of Linux, Linus
| Torvalds, announced last night, on December
| 2nd, the immediate availability for download
| of Linux kernel 2.6.32, a release that brings
| lots of improvements to the Btrfs filesystem,
| support for ACPI 4.0 and the S+core
| architecture, 3D and KMS support for the ATI
| Radeon R600/R700 graphics cards, support for
| Intel Moorestown, and many other goodies for
| all Linux users around the world.


What's new in Linux 2.6.32

,----[ Quote ]
| 3D support for newer Radeon graphics chips,
| better use of power saving features offered
| by the latest hardware and numerous
| enhancements to KVM and Btrfs are some of
| the outstanding items among the many
| thousands of changes undertaken for the
| latest kernel version. Various other
| improvements should also make Linux 2.6.32
| more reactive and as a result, feel faster.


Kernel Log: Coming in 2.6.32 (Part 6): Infrastructure

,----[ Quote ]
| Devtmpfs, aka 'devfs 2.0' to its
| detractors, should allow the Linux kernel
| to start faster and run without udev.
| Support has been added for ACPI 4.0 and
| there are two new make targets which
| generate kernel configurations attuned to
| the running system. Changes to the power
| management subsystem increase data
| throughput and allow better use of runtime
| power saving features on modern I/O
| devices.


Linux 2.6.32 Kernel Benchmarks

,----[ Quote ]
| With the Linux 2.6.32 kernel being released
| in a few days, we found it time to
| benchmark this newest kernel release that
| brings new drivers, kernel mode-setting
| improvements, virtualization enhancements,
| and more.
| [...]
| While there are just nine test results
| shown in this article, we have been running
| more Linux 2.6.32 kernel tests on other
| systems and with more test profiles.
| Besides the performance drops when using
| EXT4 and then a few encoding improvements,
| we have not encountered many performance-
| related changes with the Linux 2.6.32
| kernel.

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