The ext4 filesystem has been around for a while as experimental code in GNU/Linux distributions. Recently one distribution decided to make it the default for an install.
Fedora, Red Hat's community distribution, took this step with version 11 which was released recently. While some tech types have been using ext4 for months - prominent among them being kernel guru Ted T'so - it's a new toy for the rest of us unwashed masses.
So what does promises does it hold out? What do the other common filesystems which Linux offers at present offer?
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