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2<!DOCTYPE sections SYSTEM "/dtd/book.dtd"> 2<!DOCTYPE sections SYSTEM "/dtd/book.dtd">
3 3
4<!-- The content of this document is licensed under the CC-BY-SA license --> 4<!-- The content of this document is licensed under the CC-BY-SA license -->
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6 6
7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-ia64-disk.xml,v 1.1 2006/09/03 05:02:44 vapier Exp $ --> 7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-ia64-disk.xml,v 1.6 2007/06/26 07:07:27 nightmorph Exp $ -->
8 8
9<sections> 9<sections>
10 10
11<version>2.2</version> 11<version>3.2</version>
12<date>2005-06-10</date> 12<date>2007-06-26</date>
13 13
14<section> 14<section>
15<title>Introduction to Block Devices</title> 15<title>Introduction to Block Devices</title>
16<subsection> 16<subsection>
17<title>Block Devices</title> 17<title>Block Devices</title>
449<subsection> 449<subsection>
450<title>Filesystems?</title> 450<title>Filesystems?</title>
451<body> 451<body>
452 452
453<p> 453<p>
454The Linux kernel supports various filesystems. We'll explain ext2, ext3, 454The Linux kernel supports various filesystems. We'll explain vfat, ext2, ext3,
455ReiserFS, XFS and JFS as these are the most commonly used filesystems on Linux 455ReiserFS, XFS and JFS as these are the most commonly used filesystems on Linux
456systems. 456systems.
457</p> 457</p>
458 458
459<p> 459<p>
474</p> 474</p>
475 475
476<p> 476<p>
477<b>ext3</b> is the journaled version of the ext2 filesystem, providing metadata 477<b>ext3</b> is the journaled version of the ext2 filesystem, providing metadata
478journaling for fast recovery in addition to other enhanced journaling modes like 478journaling for fast recovery in addition to other enhanced journaling modes like
479full data and ordered data journaling. ext3 is a very good and reliable 479full data and ordered data journaling. It uses an HTree index that enables high
480performance in almost all situations. In short, ext3 is a very good and reliable
480filesystem. 481filesystem.
481</p> 482</p>
482 483
483<p> 484<p>
484<b>ReiserFS</b> is a B*-tree based filesystem that has very good overall 485<b>ReiserFS</b> is a B+tree-based filesystem that has very good overall
485performance and greatly outperforms both ext2 and ext3 when dealing with small 486performance and greatly outperforms both ext2 and ext3 when dealing with small
486files (files less than 4k), often by a factor of 10x-15x. ReiserFS also scales 487files (files less than 4k), often by a factor of 10x-15x. ReiserFS also scales
487extremely well and has metadata journaling. As of kernel 2.4.18+, ReiserFS is 488extremely well and has metadata journaling. ReiserFS is solid and usable as
488solid and usable as both general-purpose filesystem and for extreme cases such 489both general-purpose filesystem and for extreme cases such as the creation of
489as the creation of large filesystems, the use of many small files, very large 490large filesystems, very large files and directories containing tens of
490files and directories containing tens of thousands of files. 491thousands of small files.
491</p> 492</p>
492 493
493<p> 494<p>
494<b>XFS</b> is a filesystem with metadata journaling which comes with a robust 495<b>XFS</b> is a filesystem with metadata journaling which comes with a robust
495feature-set and is optimized for scalability. We only recommend using this 496feature-set and is optimized for scalability. We only recommend using this
554as ext3, you would run the following commands: 555as ext3, you would run the following commands:
555</p> 556</p>
556 557
557<pre caption="Applying a filesystem on a partition"> 558<pre caption="Applying a filesystem on a partition">
558# <i>mkdosfs /dev/sda1</i> 559# <i>mkdosfs /dev/sda1</i>
559mkdosfs 2.10 (22 Sep 2003)
560
561# <i>mke2fs -j /dev/sda3</i> 560# <i>mke2fs -j /dev/sda3</i>
562mke2fs 1.36 (05-Feb-2005)
563Filesystem label=
564OS type: Linux
565Block size=4096 (log=2)
566Fragment size=4096 (log=2)
5674382336 inodes, 8752348 blocks
568437617 blocks (5.00%) reserved for the super user
569First data block=0
570268 block groups
57132768 blocks per group, 32768 fragments per group
57216352 inodes per group
573Superblock backups stored on blocks:
574 32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
575 4096000, 7962624
576
577Writing inode tables: done
578Creating journal (8192 blocks): done
579Writing superblocks and filesystem accounting information: done
580
581This filesystem will be automatically checked every 26 mounts or
582180 days, whichever comes first. Use tune2fs -c or -i to override.
583</pre> 561</pre>
584 562
585</body> 563</body>
586</subsection> 564</subsection>
587<subsection> 565<subsection>

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