/[gentoo]/xml/htdocs/doc/en/gentoo-x86-install.xml
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739<p>Gentoo Linux supports a variety of different types of filesystems; each type has 739<p>Gentoo Linux supports a variety of different types of filesystems; each type has
740its strengths and weaknesses and its own set of performance characteristics. Currently, 740its strengths and weaknesses and its own set of performance characteristics. Currently,
741we support the creation of ext2, ext3, XFS, JFS and ReiserFS filesystems.</p> 741we support the creation of ext2, ext3, XFS, JFS and ReiserFS filesystems.</p>
742 742
743<p>ext2 is the tried and true Linux filesystem but doesn't have metadata 743<p>ext2 is the tried and true Linux filesystem but doesn't have metadata
744journaling, which means that routine ext2 filesystem checks at startup time can 744journaling, which means that routine ext2 filesystem checks at startup time can
745be quite time-consuming. There is now quite a selection of newer-generation 745be quite time-consuming. There is now quite a selection of newer-generation
746<i>journaled</i> filesystems that can be checked for consistency very quickly 746<i>journaled</i> filesystems that can be checked for consistency very quickly
747and are thus generally preferred over their non-journaled counterparts. 747and are thus generally preferred over their non-journaled counterparts.
748Journaled filesystems prevent long delays when you boot your system and your 748Journaled filesystems prevent long delays when you boot your system and your
749filesystem happens to be in an <i>inconsistent</i> state.</p> 749filesystem happens to be in an <i>inconsistent</i> state.</p>
750 750
751<p>ext3 is the journaled version of the ext2 filesystem, providing metadata 751<p>ext3 is the journaled version of the ext2 filesystem, providing metadata
752journaling for fast recovery in addition to other enhanced journaling modes 752journaling for fast recovery in addition to other enhanced journaling modes
753like full data and ordered data journaling. ext3 is a very good and reliable 753like full data and ordered data journaling. ext3 is a very good and reliable
754filesystem. While it isn't a performance leader, it offers generally decent 754filesystem. It offers generally decent performance under most conditions.
755performance under most conditions and for filesystems of a typical size. Because
756it does not extensively employ the use of "trees" in its internal design, it 755Because it does not extensively employ the use of "trees" in its internal
757doesn't scale very well, meaning that it is not an ideal choice for very large 756design, it doesn't scale very well, meaning that it is not an ideal choice for
758filesystems, or situations where you will be handling very large files or large quantities of 757very large filesystems, or situations where you will be handling very large
759files in a single directory. When used within its design parameters, ext3 is 758files or large quantities of files in a single directory. But when used within
760an excellent filesystem.</p> 759its design parameters, ext3 is an excellent filesystem.</p>
761 760
762<p>ReiserFS is a B*-tree based filesystem that has very good overall 761<p>ReiserFS is a B*-tree based filesystem that has very good overall
763performance and greatly outperforms both ext2 and ext3 when dealing with small 762performance and greatly outperforms both ext2 and ext3 when dealing with small
764files (files less than 4k), often by a factor of 10x-15x. ReiserFS also scales 763files (files less than 4k), often by a factor of 10x-15x. ReiserFS also scales
765extremely well and has metadata journaling. As of kernel 2.4.18+, ReiserFS is 764extremely well and has metadata journaling. As of kernel 2.4.18+, ReiserFS is
766now rock-solid and highly recommended for use both as a general-purpose 765now rock-solid and highly recommended for use both as a general-purpose
767filesystem and for extreme cases such as the creation of large filesystems, the 766filesystem and for extreme cases such as the creation of large filesystems, the
768use of many small files, very large files, and directories containing tens of 767use of many small files, very large files, and directories containing tens of
769thousands of files. ReiserFS is the filesystem we recommend by default for all 768thousands of files. ReiserFS is the filesystem we recommend by default for all
770non-boot partitions.</p> 769non-boot partitions.</p>
771 770
772<p>XFS is a filesystem with metadata journaling that is fully supported under 771<p>XFS is a filesystem with metadata journaling that is fully supported under
773Gentoo Linux's <path>xfs-sources</path> kernel. It comes with a robust 772Gentoo Linux's <path>xfs-sources</path> kernel. It comes with a robust
774feature-set and is optimized for scalability. We only recommend using this 773feature-set and is optimized for scalability. We only recommend using this
775filesystem on Linux systems with high-end SCSI and/or fibre channel storage and 774filesystem on Linux systems with high-end SCSI and/or fibre channel storage and

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