In most cases, you will create ReiserFS partitions when you first install your system. However, if you subsequently add a new disk drive to your system, you will need to partition it and create filesystems on those partitions. The ReiserFS filesystem is an excellent choice for most Linux filesystems, especially user filesystems and mail or web server partitions where you will be creating and deleting large numbers of small files. As discussed earlier, the design of the ReiserFS makes it a fast filesystem in which to locate files and also helps you get the most out of your available storage by handling small files (less than 4K) directly in the binary tree.
r ■ rj Unfortunately, there is no automatic way to convert an existing filesystem of some other type to a ReiserFS filesystem. To convert an existing filesystem to ReiserFS, you have to back up all existing data from one of your existing partitions, create a new ReiserFS partition on that partition, and then restore your data there.
Listing 3-9 shows commands (and related output) used to create a ReiserFS filesystem from scratch on /dev/hda5 using the default parameters. Although this example uses the mkfs.reiserfs command directly, you could do exactly the same thing by executing the command mkfs -t reiserfs /dev/hda5.
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