Date: 2008-03-13 07:39 Subject: Useful ext3 documentation (and undelete tool) Security: Public

After a classic 'rm -rf ~', Carlo Wood learned the entire ext3 file system layout and journal format and succeeded in recovering most of his home directory. In the process, he happened to create the most detailed description of ext3 layout I've ever seen:

http://www.xs4all.nl/~carlo17/howto/undelete_ext3.html

Date: 2008-03-13 07:44 Subject: LJ philosophy Security: Public

1. Okay, okay, people without LJ accounts can now comment, they will just be screened for approval to avoid the spambots.

2. Wow, sounds like I need to switch from LiveJournal now that Basic accounts are no longer available to new subscribers. Suggestions? Good lord, I'm so tired of moving my blog.

3. I've finally solidified my Theory of LJ Friends (just in time to switch blog thingies). I'm not into "private" posts or friends-only comments, so the only remaining purposes of the friend marker are (a) ego boosting, (b) directing people to blogs they will also like. So I may go through and revamp my friends list. Don't take either the old or the new list personally.

Date: 2008-03-13 07:51 Subject: CRFS code released! Security: Public

Zach Brown finally got the green light to release the source to his cool new remote file system prototype:

http://oss.oracle.com/projects/crfs/

From Zach's post to fs-devel:

I think the video recording of the talk does a decent job of giving an
overview of the design, and it's a hoot, but I can give a quick summary:

 - the user space server exports a private BTRFS volume
 - the network protocol operates on ranges of BTRFS disk items
 - the kernel client provides posix semantics by operating on items
 - the server can grant and revoke client caches of data and metadata

There's a lot of complexity hiding in those four lines but those are the
critical properties to grasp :).

http://mirror.linux.org.au/pub/linux.conf.au/2008/Fri/mel8-247.ogg