Possible data loss in Ext4 Mar 12, 2009, 00 :31 UTC (7 Talkback[s]) (7836 reads)
"...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."