Reiser File System (ReiserFS) was intended to supplant ext3 as the filesystem of choice for Linux, offering improved performance. At one point, ReiserFS version 3 was the default format choice for SuSE Linux. Version 4 was released, but development waned when the company went out of business, and SuSE eventually decided to go back to ext3 as its default.
ReiserFS offered some advantages over fonnats existing at the time, but it has fallen behind in some performance areas. It does support dynamic resizing, while other filesystems must be offline in order to be resized, or use a logical volume manager to provide virtual resizing support.
