Comments on: Activity in Linux file systems, BTRFS and ext4 http://insidehpc.com/2009/08/10/activity-in-linux-file-systems-btrfs-and-ext4/ HPC News Without the Noise for Supercomputing Professionals | insideHPC Fri, 03 May 2013 04:44:25 +0000 hourly 1 http://wordpress.org/?v=3.1.1 By: Chris Samuel http://insidehpc.com/2009/08/10/activity-in-linux-file-systems-btrfs-and-ext4/#comment-178376 Chris Samuel Sat, 15 Aug 2009 12:59:10 +0000 http://insidehpc.com/?p=6653#comment-178376 Not a problem John, FWIW I highly recommend reading LWN (http://lwn.net/) for up to date info on what's going on, their weekly kernel page is a great resource for developments in the Linux kernel. I also wrote an article for LinuxWorld almost 2 years ago about those (and other) filesystems - the benchmarks will be way out of date now but the background info might be interesting for you - http://www.csamuel.org/articles/emerging-filesystems-200709/ Not a problem John, FWIW I highly recommend reading LWN (http://lwn.net/) for up to date info on what’s going on, their weekly kernel page is a great resource for developments in the Linux kernel.

I also wrote an article for LinuxWorld almost 2 years ago about those (and other) filesystems – the benchmarks will be way out of date now but the background info might be interesting for you – http://www.csamuel.org/articles/emerging-filesystems-200709/

]]> By: <fb:name linked="false" useyou="false" uid="1175563457">John West</fb:name> http://insidehpc.com/2009/08/10/activity-in-linux-file-systems-btrfs-and-ext4/#comment-177861 John West Tue, 11 Aug 2009 13:13:28 +0000 http://insidehpc.com/?p=6653#comment-177861 Chris - great info, thanks. I have 0 filesystem chops, so the added detail is much appreciated. Chris – great info, thanks. I have 0 filesystem chops, so the added detail is much appreciated.

]]> By: Chris Samuel http://insidehpc.com/2009/08/10/activity-in-linux-file-systems-btrfs-and-ext4/#comment-177858 Chris Samuel Tue, 11 Aug 2009 12:54:33 +0000 http://insidehpc.com/?p=6653#comment-177858 I've been running btrfs on my laptops SSD for, umm, 9 months or so now and it's still not broken! :-) Agreed it's got a while to go, but it's trucking on at the moment with Red Hat, Intel, Oracle and others all contributing code. As for ext4, that article seems to completely miss the fact that it now defaults to being an extent based filesystem (a la XFS) rather than a block based one! They also completely missed NILFS2 (www.nilfs.org) which arrived in the mainline kernel around the same time as btrfs which features continuous checkpointing (and GC of those after a defined time) with the capability of converting a transient checkpoint into a permanent snapshot (and, if you no longer need it, back again). I’ve been running btrfs on my laptops SSD for, umm, 9 months or so now and it’s still not broken! :-) Agreed it’s got a while to go, but it’s trucking on at the moment with Red Hat, Intel, Oracle and others all contributing code.

As for ext4, that article seems to completely miss the fact that it now defaults to being an extent based filesystem (a la XFS) rather than a block based one!

They also completely missed NILFS2 (www.nilfs.org) which arrived in the mainline kernel around the same time as btrfs which features continuous checkpointing (and GC of those after a defined time) with the capability of converting a transient checkpoint into a permanent snapshot (and, if you no longer need it, back again).

]]> By: » Activity in Linux file systems, BTRFS and ext4 | insideHPC.com http://insidehpc.com/2009/08/10/activity-in-linux-file-systems-btrfs-and-ext4/#comment-177821 » Activity in Linux file systems, BTRFS and ext4 | insideHPC.com Tue, 11 Aug 2009 03:52:13 +0000 http://insidehpc.com/?p=6653#comment-177821 [...] Continued here:  Activity in Linux file systems, BTRFS and ext4 | insideHPC.com [...] [...] Continued here:  Activity in Linux file systems, BTRFS and ext4 | insideHPC.com [...]

]]> By: Linux | All Days Long http://insidehpc.com/2009/08/10/activity-in-linux-file-systems-btrfs-and-ext4/#comment-177778 Linux | All Days Long Mon, 10 Aug 2009 18:33:07 +0000 http://insidehpc.com/?p=6653#comment-177778 [...] Activity in Linux file systems, BTRFS and ext4 | insideHPC.com By John West insideHPC: HPC news for supercomputing professionals. insideHPC – http://insidehpc.com/ [...] [...] Activity in Linux file systems, BTRFS and ext4 | insideHPC.com By John West insideHPC: HPC news for supercomputing professionals. insideHPC – http://insidehpc.com/ [...]

]]> By: Activity in Linux file systems, BTRFS and ext4 | insideHPC.com http://insidehpc.com/2009/08/10/activity-in-linux-file-systems-btrfs-and-ext4/#comment-177770 Activity in Linux file systems, BTRFS and ext4 | insideHPC.com Mon, 10 Aug 2009 17:11:36 +0000 http://insidehpc.com/?p=6653#comment-177770 [...] See more here:  Activity in Linux file systems, BTRFS and ext4 | insideHPC.com [...] [...] See more here:  Activity in Linux file systems, BTRFS and ext4 | insideHPC.com [...]

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