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Possible data loss in Ext4

Mar 12, 2009, 00:31 (7 Talkback[s])

"...available as an option when installing Ubuntu 9.04. The report describes a crash occurring shortly after the KDE 4 desktop files had been loaded, resulting in the loss of all of the data that had been created, including many KDE configuration files.

"In a reply, Ext4 Developer Ted Ts'o explains the background of the problem. Like other modern file systems, such as XFS, Ext4 implements delayed allocation -- writing new data can take up to 60 seconds. This increases the performance and allows for optimisation of the data organisation on the hard drive platter."

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