9.04, ext4 and the open-write-close-rename debacle

Patrick Goetz pgoetz at mail.utexas.edu
Wed May 6 16:14:47 UTC 2009

I'm not sure if this is the right forum for this question, but I've been 
unable to find a definitive answer to this question.

Probably everyone is familiar with the lengthy discussion that has 
revolved around the first stable implementation of ext4, namely that all 
data in a file can be zeroed out (including the original copy) in the 
event of a system crash even for the presumably safe 
open-write-close-rename paradigm; e.g.

In his blog, Ted Ts'o comments that the 2.6.30 patch for this has been 
backported by Canonical to 9.04 (I think somewhere in the comments to 
this entry)

Can anyone confirm that if I start formatting file servers with 
9.04-based ext4 partitions users won't be faced with losing dozens of 
recently saved files if the server happens to crash?

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