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1<?xml version='1.0' encoding='UTF-8'?> 1<?xml version='1.0' encoding='UTF-8'?>
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 -->
5<!-- See http://creativecommons.org/licenses/by-sa/1.0 --> 5<!-- See http://creativecommons.org/licenses/by-sa/1.0 -->
6 6
7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-alpha-disk.xml,v 1.3 2004/07/16 09:37:11 neysx Exp $ --> 7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-alpha-disk.xml,v 1.4 2004/07/18 10:29:59 neysx Exp $ -->
8 8
9<sections> 9<sections>
10<section> 10<section>
11<title>Introduction to Block Devices</title> 11<title>Introduction to Block Devices</title>
12<subsection> 12<subsection>
13<title>Block Devices</title> 13<title>Block Devices</title>
14<body> 14<body>
15 15
16<p> 16<p>
17We'll take a good look at disk-oriented aspects of Gentoo Linux 17We'll take a good look at disk-oriented aspects of Gentoo Linux
18and Linux in general, including Linux filesystems, partitions and block devices. 18and Linux in general, including Linux filesystems, partitions and block devices.
19Then, once you're familiar with the ins and outs of disks and filesystems, 19Then, once you're familiar with the ins and outs of disks and filesystems,
20you'll be guided through the process of setting up partitions and filesystems 20you'll be guided through the process of setting up partitions and filesystems
21for your Gentoo Linux installation. 21for your Gentoo Linux installation.
22</p> 22</p>
402high performance in almost all situations. In short, ext3 is an excellent 402high performance in almost all situations. In short, ext3 is an excellent
403filesystem. 403filesystem.
404</p> 404</p>
405 405
406<p> 406<p>
407<b>ReiserFS</b> is a B*-tree based filesystem that has very good overall 407<b>ReiserFS</b> is a B*-tree based filesystem that has very good overall
408performance and greatly outperforms both ext2 and ext3 when dealing with small 408performance and greatly outperforms both ext2 and ext3 when dealing with small
409files (files less than 4k), often by a factor of 10x-15x. ReiserFS also scales 409files (files less than 4k), often by a factor of 10x-15x. ReiserFS also scales
410extremely well and has metadata journaling. As of kernel 2.4.18+, ReiserFS is 410extremely well and has metadata journaling. As of kernel 2.4.18+, ReiserFS is
411solid and usable as both general-purpose filesystem and for extreme cases such 411solid and usable as both general-purpose filesystem and for extreme cases such
412as the creation of large filesystems, the use of many small files, very large 412as the creation of large filesystems, the use of many small files, very large
413files and directories containing tens of thousands of files. 413files and directories containing tens of thousands of files.
414</p> 414</p>
415 415
416<p> 416<p>
417<b>XFS</b> is a filesystem with metadata journaling that is fully supported 417<b>XFS</b> is a filesystem with metadata journaling which comes with a robust
418under Gentoo Linux's xfs-sources kernel. It comes with a robust feature-set and
419is optimized for scalability. We only recommend using this filesystem on Linux 418feature-set and is optimized for scalability. We only recommend using this
420systems with high-end SCSI and/or fibre channel storage and a uninterruptible 419filesystem on Linux systems with high-end SCSI and/or fibre channel storage and
421power supply. Because XFS aggressively caches in-transit data in RAM, improperly 420an uninterruptible power supply. Because XFS aggressively caches in-transit data
422designed programs (those that don't take proper precautions when writing files 421in RAM, improperly designed programs (those that don't take proper precautions
423to disk and there are quite a few of them) can lose a good deal of data if the 422when writing files to disk and there are quite a few of them) can lose a good
424system goes down unexpectedly. 423deal of data if the system goes down unexpectedly.
425</p> 424</p>
426 425
427<p> 426<p>
428<b>JFS</b> is IBM's high-performance journaling filesystem. It has recently 427<b>JFS</b> is IBM's high-performance journaling filesystem. It has recently
429become production-ready and there hasn't been a sufficient track record to 428become production-ready and there hasn't been a sufficient track record to
430comment positively nor negatively on its general stability at this point. 429comment positively nor negatively on its general stability at this point.
431</p> 430</p>
432 431
433</body> 432</body>
434</subsection> 433</subsection>
435<subsection id="filesystems-apply"> 434<subsection id="filesystems-apply">
436<title>Applying a Filesystem to a Partition</title> 435<title>Applying a Filesystem to a Partition</title>
437<body> 436<body>
438 437
439<p> 438<p>

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