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Posts Tagged ‘filesystems’

Next generation Linux file-systems

November 5th, 2009 No comments

If you’ve been reading this blog a couple of things are clear, I don’t like Apple much and I have a soft spot for file-systems. An article was posted on the IBM DeveloperWorks site that covers two file systems; NiLFS(2) and exofs that has some great information about these two beasts.

Linux® continues to innovate in the area of file systems. It supports the largest variety of file systems of any operating system. It also provides cutting-edge file system technology. Two new file systems that are making their way into Linux include the NiLFS(2) log-structured file system and the exofs object-based storage system. Discover the purpose behind these two new file systems and the advantages that they bring.

Read the full article on the Next-generation linux filesystems, there was an article on LWN.net a few years back discussing the (then emerging) Btrfs and NiLFS and how things may pan out. I’m quite happy and content with ZFS but in either case it’ll be interesting to see how all three go.

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ZFS gets deduplication

November 3rd, 2009 No comments

ZFS now has deduplication support which is as easy as just setting a property on the file system.

$ zfs set dedup=on tank/src

Read Jeff Bonwick’s (the supremo source for ZFS) article as it covers everything you’d ever want to know about what deduplication is and the various strategies behind it. Can’t wait for it to be implemented in OpenSolaris 2010.02 its already been integrated into the ON source base.

Whilst on the subject of ZFS, there was a very good article posted on OSNews recently regarding the lack of fsck for ZFS, it gives you a very good overview of ZFS, what COW really implies, how it differs from journaling filesystems found in Linux and ofcourse regarding fsck.

And to compliment it all, a deeper look at the RAID-Z on disk format in ZFS. Light reading for Melbourne Cup Day!

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CentOS 5.4 Released!

October 23rd, 2009 No comments

CentOS 5.4 has been released! Woo yeah, its been a while since RHEL 5.4 has been out but checkout the release notes for a list of changes.

Download mirrors are being updated but if your local, here are a couple of Australian Mirrors.

CentOS 5.4 x86

CentOS 5.4 x64

I just did a inplace 5.3->5.4 upgrade with a yum update. With a localised mirror, blindingly fast too!

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