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<span>Features</span> </div> </a> <button aria-controls="toc-Features-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Features subsection</span> </button> <ul id="toc-Features-sublist" class="vector-toc-list"> <li id="toc-Current_status" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Current_status"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>Current status</span> </div> </a> <ul id="toc-Current_status-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Issues" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Issues"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>Issues</span> </div> </a> <ul id="toc-Issues-sublist" class="vector-toc-list"> <li id="toc-Supported_features" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Supported_features"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2.1</span> <span>Supported features</span> </div> </a> <ul id="toc-Supported_features-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Additional_features" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Additional_features"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.3</span> <span>Additional features</span> </div> </a> <ul id="toc-Additional_features-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Compatibility" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Compatibility"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Compatibility</span> </div> </a> <ul id="toc-Compatibility-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Relative_performance" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Relative_performance"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Relative performance</span> </div> </a> <ul id="toc-Relative_performance-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-License" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#License"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>License</span> </div> </a> <ul id="toc-License-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Developers" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Developers"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Developers</span> </div> </a> <ul id="toc-Developers-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-External_links" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#External_links"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>External links</span> </div> </a> <ul id="toc-External_links-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">NILFS</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 5 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-5" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">5 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/NILFS" title="NILFS – German" lang="de" hreflang="de" data-title="NILFS" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/NILFS" title="NILFS – French" lang="fr" hreflang="fr" data-title="NILFS" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/NILFS" title="NILFS – Japanese" lang="ja" hreflang="ja" data-title="NILFS" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/NILFS" title="NILFS – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="NILFS" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/NILFS" title="NILFS – Russian" lang="ru" hreflang="ru" data-title="NILFS" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q3334447#sitelinks-wikipedia" title="Edit interlanguage links" class="wbc-editpage">Edit links</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Namespaces"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a href="/wiki/NILFS" title="View the content page [c]" accesskey="c"><span>Article</span></a></li><li id="ca-talk" class="vector-tab-noicon mw-list-item"><a href="/wiki/Talk:NILFS" rel="discussion" title="Discuss 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19 years ago</span><span style="display:none"> (<span class="bday dtstart published updated">2005</span>)</span> with <a href="/wiki/Linux_kernel" title="Linux kernel">Linux kernel</a> 2.6.13</td></tr><tr><th colspan="2" class="infobox-header">Structures</th></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">File allocation</th><td class="infobox-data"><a href="/wiki/B-tree" title="B-tree">B-tree</a></td></tr><tr><th colspan="2" class="infobox-header">Limits</th></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Max volume size</th><td class="infobox-data">8 <a href="/wiki/Exbibyte" class="mw-redirect" title="Exbibyte">EiB</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Max file size</th><td class="infobox-data">8 <a href="/wiki/Exbibyte" class="mw-redirect" title="Exbibyte">EiB</a></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Max filename length</th><td class="infobox-data">255 bytes</td></tr><tr><th colspan="2" class="infobox-header">Features</th></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Dates recorded</th><td class="infobox-data">atime (planned)</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Date resolution</th><td class="infobox-data">64-bit on-disk timestamps</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Attributes</th><td class="infobox-data">POSIX, with plans for extended attributes</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/File_system_permissions" class="mw-redirect" title="File system permissions">File system<br />permissions</a></th><td class="infobox-data">POSIX, with plans for ACLs<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup></td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Transparent<br />compression</th><td class="infobox-data">No</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Filesystem-level_encryption" title="Filesystem-level encryption">Transparent<br />encryption</a></th><td class="infobox-data">No</td></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;"><a href="/wiki/Copy-on-write" title="Copy-on-write">Copy-on-write</a></th><td class="infobox-data">Yes</td></tr><tr><th colspan="2" class="infobox-header">Other</th></tr><tr><th scope="row" class="infobox-label" style="white-space: nowrap;">Supported<br /><a href="/wiki/Operating_system" title="Operating system">operating systems</a></th><td class="infobox-data"><a href="/wiki/Linux_kernel" title="Linux kernel">Linux kernel</a>, (ReadOnly for <a href="/wiki/NetBSD" title="NetBSD">NetBSD</a>)</td></tr></tbody></table> <p><b>NILFS</b> or <b>NILFS2</b> (<i><b>N</b>ew <b>I</b>mplementation of a <b>L</b>og-structured <b>F</b>ile <b>S</b>ystem</i>) is a <a href="/wiki/Log-structured_file_system" title="Log-structured file system">log-structured file system</a> implementation for the <a href="/wiki/Linux_kernel" title="Linux kernel">Linux kernel</a>. It was developed by <a href="/wiki/Nippon_Telegraph_and_Telephone_Corporation" class="mw-redirect" title="Nippon Telegraph and Telephone Corporation">Nippon Telegraph and Telephone Corporation</a> (NTT) <a href="/wiki/Nippon_Telegraph_and_Telephone_Corporation#R.26D_laboratories" class="mw-redirect" title="Nippon Telegraph and Telephone Corporation">CyberSpace Laboratories</a> and a community from all over the world. NILFS was released under the terms of the <a href="/wiki/GNU_General_Public_License" title="GNU General Public License">GNU General Public License</a> (GPL). </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Design">Design</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=1" title="Edit section: Design"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>"NILFS is a log-structured file system, in that the storage medium is treated like a circular buffer and new blocks are always written to the end.[…]Log-structured file systems are often used for flash media since they will naturally perform wear-leveling;[…]NILFS emphasizes snapshots. The log-structured approach is a specific form of copy-on-write behavior, so it naturally lends itself to the creation of file system snapshots. The NILFS developers talk about the creation of "continuous snapshots" which can be used to recover from user-initiated file system problems[…]."<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> </p><p>Using a <a href="/wiki/Copy-on-write#Copy-on-write_in_computer_storage" title="Copy-on-write">copy-on-write</a> technique known as a <a href="/wiki/Log-structured_file_system" title="Log-structured file system">log-structured file system</a>, NILFS records all data in a continuous log-like format that is only appended to, never overwritten, an approach that is designed to reduce <a href="/wiki/Seek_time" class="mw-redirect" title="Seek time">seek times</a>, as well as minimize the kind of <a href="/wiki/Data_loss" title="Data loss">data loss</a> that occurs after a crash with conventional file systems. For example, data loss occurs on <a href="/wiki/Ext3" title="Ext3">ext3</a> file systems when the system <a href="/wiki/Crash_(computing)" title="Crash (computing)">crashes</a> during a write operation. When the system <a href="/wiki/Booting" title="Booting">reboots</a>, the <a href="/wiki/Journal_(computing)" class="mw-redirect" title="Journal (computing)">journal</a> notes that the write did not complete, and any partial data writes are lost. </p><p>Some file systems, like <a href="/wiki/Unix_File_System" title="Unix File System">UFS</a>-derived file systems used by the <a href="/wiki/Solaris_(operating_system)" class="mw-redirect" title="Solaris (operating system)">Solaris operating system</a> and <a href="/wiki/BSD" class="mw-redirect" title="BSD">BSDs</a>, provide a <a href="/wiki/Snapshot_(computer_storage)" title="Snapshot (computer storage)">snapshot</a> feature that prevents<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (August 2011)">citation needed</span></a></i>]</sup> such data loss, but the snapshot configuration can be lengthy on large file systems. NILFS, in contrast, can "continuously and automatically [save] instantaneous states of the file system without interrupting service", according to NTT Labs.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup> </p><p>The "instantaneous states" that NILFS continuously saves can actually be mounted, read-only, at the same time that the actual file system is mounted read-write — a capability useful for data recovery after hardware failures and other system crashes. The "lscp" (list checkpoint) command of an interactive NILFS "inspect" utility is first used to find the checkpoint's address, in this case "2048": </p> <pre># inspect /dev/sda2 ... nilfs> listcp 1 6 Tue Jul 12 14:55:57 2005 MajorCP|LogiBegin|LogiEnd 2048 2352 Tue Jul 12 14:55:58 2005 MajorCP|LogiEnd ... nilfs> quit </pre> <p>The checkpoint address is then used to mount the checkpoint: </p> <pre># mount -t nilfs -r -o cp=2048 /dev/sda2 /nilfs-cp # df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda2 70332412 8044540 62283776 12% /nilfs /dev/sda2 70332412 8044540 62283776 12% /nilfs-cp </pre> <div class="mw-heading mw-heading2"><h2 id="Features">Features</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=2" title="Edit section: Features"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>NILFS provides continuous snapshotting. In addition to the versioning capability of the entire file system, users can even restore files mistakenly overwritten or deleted at any recent time. Since NILFS can keep consistency like conventional LFS, it achieves quick recovery after system crashes. </p><p>Continuous <a href="/wiki/Snapshot_(computer_storage)" title="Snapshot (computer storage)">snapshotting</a> is not provided by most file systems, including those supporting point-in-time snapshotting (e.g. <a href="/wiki/Btrfs" title="Btrfs">Btrfs</a>) </p><p>NILFS creates a number of checkpoints every few seconds or per synchronous write basis (unless there is no change). Users can select significant versions among continuously created checkpoints, and can change them into snapshots which will be preserved until they are changed back to checkpoints. </p><p>There is no limit on the number of snapshots until the volume gets full. Each snapshot is mountable as a read-only file system. It is mountable concurrently with a writable mount and other snapshots, and this feature is convenient for making consistent backups during use. </p><p>Possible uses of NILFS include versioning, tamper detection, <a href="/wiki/Sarbanes_Oxley_Act" class="mw-redirect" title="Sarbanes Oxley Act">SOX</a> compliance logging, data loss recovery. </p><p>The current major version of NILFS is version 2, referred to as NILFS2. NILFS2 implements online garbage collection to reclaim disk space while keeping multiple snapshots. </p><p>Other NILFS features include: </p> <ul><li><a href="/wiki/B-tree" title="B-tree">B-tree</a> based file and inode management.</li> <li>Immediate recovery after system crash.</li> <li>64-bit data structures; support many files, large files and disks.</li> <li>64-bit on-disk timestamps which are free of the <a href="/wiki/Year_2038_problem" title="Year 2038 problem">year 2038 problem</a>.</li></ul> <div class="mw-heading mw-heading3"><h3 id="Current_status">Current status</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=3" title="Edit section: Current status"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="Issues">Issues</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=4" title="Edit section: Issues"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>As of 2023, NILFS lacks a dedicated consistency checking utility (fsck), and thus can't recover from severe errors that cause it to fail to find a valid checkpoint.<sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading4"><h4 id="Supported_features">Supported features</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=5" title="Edit section: Supported features"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Basic <a href="/wiki/POSIX" title="POSIX">POSIX</a> file system features</li> <li>Snapshots <ul><li>Automatically and continuously taken</li> <li>No limit on the number of snapshots until the volume gets full</li> <li>Mountable as read-only file systems</li> <li>Mountable concurrently with the writable mount (convenient to make consistent backups during use)</li> <li>Quick listing</li></ul></li> <li>Background <a href="/wiki/Garbage_collection_(computer_science)" title="Garbage collection (computer science)">Garbage Collection</a> (GC) <ul><li>Can maintain multiple snapshots</li> <li>Selectable GC Policy, which is given by a userland daemon.</li></ul></li> <li>Quick crash recovery on-mount</li> <li>Read-ahead for meta data files as well as data files</li> <li><a href="/wiki/Block_size_(data_storage_and_transmission)" class="mw-redirect" title="Block size (data storage and transmission)">Block sizes</a> smaller than <a href="/wiki/Page_(computer_memory)" title="Page (computer memory)">page size</a> (e.g. 1<a href="/wiki/Kilobyte" title="Kilobyte">KB</a> or 2KB)</li> <li>Online resizing (since Linux-3.x and nilfs-utils 2.1)</li> <li>Related utilities (by contribution of Jiro SEKIBA) <ul><li><a href="/wiki/GNU_GRUB" title="GNU GRUB">grub2</a></li> <li><a href="/wiki/Util-linux" title="Util-linux">util-linux</a> (<a href="/wiki/Blkid" class="mw-redirect" title="Blkid">blkid</a>, libblkid, uuid mount)</li> <li><a href="/wiki/Udisks" class="mw-redirect" title="Udisks">udisks</a>, palimpsest</li> <li>File system label (nilfs-tune)</li></ul></li></ul> <div class="mw-heading mw-heading3"><h3 id="Additional_features">Additional features</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=6" title="Edit section: Additional features"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li>Fast write and recovery times</li> <li>Minimal damage to file data and system consistency on hardware failure <ul><li>32-bit <a href="/wiki/Checksum" title="Checksum">checksums</a> (<a href="/wiki/CRC32" class="mw-redirect" title="CRC32">CRC32</a>) on <a href="/wiki/Data" title="Data">data</a> and <a href="/wiki/Metadata" title="Metadata">metadata</a> for integrity assurance (per block group, in segment summary)<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup></li> <li>Correctly ordered data and meta-data writes</li> <li>Redundant <a href="/wiki/Device_file#Block_devices" title="Device file">superblock</a></li></ul></li> <li>Internal data is processed in 64-bit wide word size</li> <li>Can create and store huge files (8 <a href="/wiki/Exbibyte" class="mw-redirect" title="Exbibyte">EiB</a>)</li></ul> <div class="mw-heading mw-heading2"><h2 id="Compatibility">Compatibility</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=7" title="Edit section: Compatibility"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>NILFS is available in various <a href="/wiki/Software_distribution" title="Software distribution">GNU/Linux distributions</a> like <a href="/wiki/Arch_Linux" title="Arch Linux">Arch Linux</a>,<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Debian" title="Debian">Debian</a><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> (since version 5.0), <a href="/wiki/Fedora_(operating_system)" class="mw-redirect" title="Fedora (operating system)">Fedora</a>, <a href="/wiki/Gentoo_Linux" title="Gentoo Linux">Gentoo</a>,<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> <a href="/wiki/Linux_Mint" title="Linux Mint">Linux Mint</a>, <a href="/wiki/NixOS" title="NixOS">NixOS</a>, <a href="/wiki/Ubuntu_(operating_system)" class="mw-redirect" title="Ubuntu (operating system)">Ubuntu</a> (since version 9.10), etc. To use it, users typically need to install the nilfs-utils or nilfs-tools package. A boot-cd with NILFS is also available on <a rel="nofollow" class="external text" href="http://prrescue.prnet.org/index.php/Main_Page">PrRescue</a>. </p><p>It is also supported by partition-editing applications like <a href="/wiki/GParted" title="GParted">GParted</a>.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup> </p><p>A separate, <a href="/wiki/BSD" class="mw-redirect" title="BSD">BSD</a> licensed implementation, currently with <b>read-only</b> support, is included in <a href="/wiki/NetBSD" title="NetBSD">NetBSD</a>.<sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="Relative_performance">Relative performance</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=8" title="Edit section: Relative performance"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In the January 2015 presentation <i><a href="/wiki/SD_cards" class="mw-redirect" title="SD cards">SD cards</a> and <a href="/wiki/Filesystems" class="mw-redirect" title="Filesystems">file systems</a> for <a href="/wiki/Embedded_system" title="Embedded system">embedded systems</a></i> at <a href="/wiki/Linux.conf.au" title="Linux.conf.au">Linux.conf.au</a>, it was stated:<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> </p> <style data-mw-deduplicate="TemplateStyles:r1244412712">.mw-parser-output .templatequote{overflow:hidden;margin:1em 0;padding:0 32px}.mw-parser-output .templatequotecite{line-height:1.5em;text-align:left;margin-top:0}@media(min-width:500px){.mw-parser-output .templatequotecite{padding-left:1.6em}}</style><blockquote class="templatequote"><p>If you've got a workload that's latency sensitive, you might want to use NILFS. If you've got one that's throughput sensitive, you might want to use <a href="/wiki/F2FS" title="F2FS">F2FS</a>.</p><div class="templatequotecite">— <cite>Peter Chubb</cite></div></blockquote> <link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1244412712"><blockquote class="templatequote"><p>NILFS2 works much better for the lots of small files case than F2FS or EXT4.</p><div class="templatequotecite">— <cite>Peter Chubb</cite></div></blockquote> <div class="mw-heading mw-heading2"><h2 id="License">License</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=9" title="Edit section: License"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The NILFS2 file system utilities are made available under the GNU General Public License version 2, with the exception of the lib/nilfs libraries and their header files, which are made available under the GNU Lesser General Public License Version 2.1. </p> <div class="mw-heading mw-heading2"><h2 id="Developers">Developers</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=10" title="Edit section: Developers"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The Japanese primary authors and major contributors to the <code>nilfs-utils</code> who worked or are working at labs of NTT Corporation are: </p> <ul><li>Ryusuke Konishi (Primary maintainer, 02/2008–Present)</li> <li>Koji Sato</li> <li>Naruhiko Kamimura</li> <li>Seiji Kihara</li> <li>Yoshiji Amagai</li> <li>Hisashi Hifumi and</li> <li>Satoshi Moriai.</li></ul> <p>Other major contributors are: </p> <ul><li>Andreas Rohner<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup></li> <li>Dan McGee</li> <li>David Arendt</li> <li>David Smid</li> <li>dexen deVries</li> <li>Dmitry Smirnov</li> <li>Eric Sandeen</li> <li>Jiro SEKIBA</li> <li>Matteo Frigo</li> <li>Hitoshi Mitake</li> <li>Takashi Iwai</li> <li>Vyacheslav Dubeyko</li></ul> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=11" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239009302">.mw-parser-output .portalbox{padding:0;margin:0.5em 0;display:table;box-sizing:border-box;max-width:175px;list-style:none}.mw-parser-output .portalborder{border:1px solid var(--border-color-base,#a2a9b1);padding:0.1em;background:var(--background-color-neutral-subtle,#f8f9fa)}.mw-parser-output .portalbox-entry{display:table-row;font-size:85%;line-height:110%;height:1.9em;font-style:italic;font-weight:bold}.mw-parser-output .portalbox-image{display:table-cell;padding:0.2em;vertical-align:middle;text-align:center}.mw-parser-output .portalbox-link{display:table-cell;padding:0.2em 0.2em 0.2em 0.3em;vertical-align:middle}@media(min-width:720px){.mw-parser-output .portalleft{clear:left;float:left;margin:0.5em 1em 0.5em 0}.mw-parser-output .portalright{clear:right;float:right;margin:0.5em 0 0.5em 1em}}</style><ul role="navigation" aria-label="Portals" class="noprint portalbox portalborder portalright"> <li class="portalbox-entry"><span class="portalbox-image"><span class="noviewer" typeof="mw:File"><span><img alt="" src="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Free_and_open-source_software_logo_%282009%29.svg/28px-Free_and_open-source_software_logo_%282009%29.svg.png" decoding="async" width="28" height="28" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/3/31/Free_and_open-source_software_logo_%282009%29.svg/42px-Free_and_open-source_software_logo_%282009%29.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/3/31/Free_and_open-source_software_logo_%282009%29.svg/56px-Free_and_open-source_software_logo_%282009%29.svg.png 2x" data-file-width="512" data-file-height="512" /></span></span></span><span class="portalbox-link"><a href="/wiki/Portal:Free_and_open-source_software" title="Portal:Free and open-source software">Free and open-source software portal</a></span></li></ul> <ul><li><a href="/wiki/ZFS" title="ZFS">ZFS</a></li> <li><a href="/wiki/Btrfs" title="Btrfs">Btrfs</a></li> <li><a href="/wiki/F2FS" title="F2FS">F2FS</a>, another log-structured file system implementation</li> <li><a href="/wiki/List_of_file_systems" title="List of file systems">List of file systems</a></li> <li><a href="/wiki/Comparison_of_file_systems" title="Comparison of file systems">Comparison of file systems</a></li> <li><a href="/wiki/Log-structured_File_System_(BSD)" title="Log-structured File System (BSD)">Log-structured File System (BSD)</a></li> <li><a href="/wiki/Sprite_operating_system" class="mw-redirect" title="Sprite operating system">Sprite operating system</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=12" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width"> <ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><b><a href="#cite_ref-1">^</a></b></span> <span class="reference-text"><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://nilfs.sourceforge.io/en/current_status.html">"NILFS Current Status"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=NILFS+Current+Status&rft_id=https%3A%2F%2Fnilfs.sourceforge.io%2Fen%2Fcurrent_status.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANILFS" class="Z3988"></span></span> </li> <li id="cite_note-2"><span class="mw-cite-backlink"><b><a href="#cite_ref-2">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://lwn.net/Articles/238923/">"BTRFS and NILFS [LWN.net]"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=BTRFS+and+NILFS+%26%2391%3BLWN.net%26%2393%3B&rft_id=https%3A%2F%2Flwn.net%2FArticles%2F238923%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANILFS" class="Z3988"></span></span> </li> <li id="cite_note-3"><span class="mw-cite-backlink"><b><a href="#cite_ref-3">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="http://www.linuxelectrons.com/news/linux/ntt-releases-nilfs-linux-file-system-prevention-data-loss">"An article about NILFS"</a><span class="reference-accessdate">. Retrieved <span class="nowrap">2008-07-28</span></span>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=An+article+about+NILFS&rft_id=http%3A%2F%2Fwww.linuxelectrons.com%2Fnews%2Flinux%2Fntt-releases-nilfs-linux-file-system-prevention-data-loss&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANILFS" class="Z3988"></span></span> </li> <li id="cite_note-4"><span class="mw-cite-backlink"><b><a href="#cite_ref-4">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://www.reddit.com/r/archlinux/comments/6c5m8h/corrupted_nilfs2_partition_var_opinions_on_a/">Corrupted NILFS2 partition (/var) - Opinions on a better FS for /var?</a></span> </li> <li id="cite_note-5"><span class="mw-cite-backlink"><b><a href="#cite_ref-5">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="https://linux-nilfs.vger.kernel.narkive.com/w0lqFaoH/can-t-mount-nilfs-error-searching-super-root">Kernel archives: Can't mount nilfs - error searching super root.</a></span> </li> <li id="cite_note-6"><span class="mw-cite-backlink"><b><a href="#cite_ref-6">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://nilfs.sourceforge.net/papers/overview-v1.pdf">the NILFS version 1: overview</a></span> </li> <li id="cite_note-7"><span class="mw-cite-backlink"><b><a href="#cite_ref-7">^</a></b></span> <span class="reference-text">does not verify: <a rel="nofollow" class="external text" href="http://www.spinics.net/lists/linux-nilfs/msg01063.html">Re: Does nilfs2 checksum all data?</a>; kernel 4.4.38-v7+ does not verify, too.</span> </li> <li id="cite_note-8"><span class="mw-cite-backlink"><b><a href="#cite_ref-8">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://archlinux.org/packages/core/x86_64/nilfs-utils/">"Arch Linux - nilfs-utils 2.2.9-1 (X86_64)"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Arch+Linux+-+nilfs-utils+2.2.9-1+%28X86_64%29&rft_id=https%3A%2F%2Farchlinux.org%2Fpackages%2Fcore%2Fx86_64%2Fnilfs-utils%2F&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANILFS" class="Z3988"></span></span> </li> <li id="cite_note-9"><span class="mw-cite-backlink"><b><a href="#cite_ref-9">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://packages.debian.org/bullseye/nilfs-tools">"Debian -- Details of package nilfs-tools in bullseye"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Debian+--+Details+of+package+nilfs-tools+in+bullseye&rft_id=https%3A%2F%2Fpackages.debian.org%2Fbullseye%2Fnilfs-tools&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANILFS" class="Z3988"></span></span> </li> <li id="cite_note-10"><span class="mw-cite-backlink"><b><a href="#cite_ref-10">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://packages.gentoo.org/packages/sys-fs/nilfs-utils">"Sys-fs/Nilfs-utils – Gentoo Packages"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=Sys-fs%2FNilfs-utils+%E2%80%93+Gentoo+Packages&rft_id=https%3A%2F%2Fpackages.gentoo.org%2Fpackages%2Fsys-fs%2Fnilfs-utils&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANILFS" class="Z3988"></span></span> </li> <li id="cite_note-11"><span class="mw-cite-backlink"><b><a href="#cite_ref-11">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://gparted.org/features.php">"GParted -- Features"</a>.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=GParted+--+Features&rft_id=https%3A%2F%2Fgparted.org%2Ffeatures.php&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANILFS" class="Z3988"></span></span> </li> <li id="cite_note-12"><span class="mw-cite-backlink"><b><a href="#cite_ref-12">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external text" href="http://mail-index.netbsd.org/source-changes/2009/07/18/msg223178.html">NiLFS(2) source commit</a></span> </li> <li id="cite_note-13"><span class="mw-cite-backlink"><b><a href="#cite_ref-13">^</a></b></span> <span class="reference-text"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFPeter_Chubb" class="citation web cs1">Peter Chubb. <a rel="nofollow" class="external text" href="http://mirror.linux.org.au/pub/linux.conf.au/2015/Case_Room_2/Friday/SD_Cards_and_filesystems_for_Embedded_Systems.webm">"SD cards and filesystems for embedded systems"</a>. Linux.conf.au.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=SD+cards+and+filesystems+for+embedded+systems&rft.pub=Linux.conf.au&rft.au=Peter+Chubb&rft_id=http%3A%2F%2Fmirror.linux.org.au%2Fpub%2Flinux.conf.au%2F2015%2FCase_Room_2%2FFriday%2FSD_Cards_and_filesystems_for_Embedded_Systems.webm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANILFS" class="Z3988"></span></span> </li> <li id="cite_note-14"><span class="mw-cite-backlink"><b><a href="#cite_ref-14">^</a></b></span> <span class="reference-text"><a rel="nofollow" class="external free" href="https://www.complang.tuwien.ac.at/Diplomarbeiten/rohner18.pdf">https://www.complang.tuwien.ac.at/Diplomarbeiten/rohner18.pdf</a> <sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Bare_URLs" title="Wikipedia:Bare URLs"><span title="A full citation of this PDF document is required to prevent link rot. (March 2022)">bare URL PDF</span></a></i>]</sup></span> </li> </ol></div> <style data-mw-deduplicate="TemplateStyles:r1239549316">.mw-parser-output .refbegin{margin-bottom:0.5em}.mw-parser-output .refbegin-hanging-indents>ul{margin-left:0}.mw-parser-output .refbegin-hanging-indents>ul>li{margin-left:0;padding-left:3.2em;text-indent:-3.2em}.mw-parser-output .refbegin-hanging-indents ul,.mw-parser-output .refbegin-hanging-indents ul li{list-style:none}@media(max-width:720px){.mw-parser-output .refbegin-hanging-indents>ul>li{padding-left:1.6em;text-indent:-1.6em}}.mw-parser-output .refbegin-columns{margin-top:0.3em}.mw-parser-output .refbegin-columns ul{margin-top:0}.mw-parser-output .refbegin-columns li{page-break-inside:avoid;break-inside:avoid-column}@media screen{.mw-parser-output .refbegin{font-size:90%}}</style><div class="refbegin" style=""> </div> <div class="mw-heading mw-heading2"><h2 id="External_links">External links</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=NILFS&action=edit&section=13" title="Edit section: External links"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><span class="official-website"><span class="url"><a rel="nofollow" class="external text" href="http://nilfs.sourceforge.io/en/">Official website</a></span></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://archive.today/20130103180800/http://www.linuxfordevices.com/c/a/News/Linux-gains-lossless-filesystem/">"An Article Describing High-level Features"</a>. Archived from <a rel="nofollow" class="external text" href="http://linuxdevices.com/news/NS9521569196.html">the original</a> on 2013-01-03.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=An+Article+Describing+High-level+Features&rft_id=http%3A%2F%2Flinuxdevices.com%2Fnews%2FNS9521569196.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANILFS" class="Z3988"></span></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite class="citation web cs1"><a rel="nofollow" class="external text" href="https://archive.today/20130127210619/http://www.linuxfordevices.com/c/a/News/Worlds-largest-telco-joins-OSDL/">"World's Largest TELCO Joins Open Source Development Labs"</a>. Archived from <a rel="nofollow" class="external text" href="http://www.linuxdevices.com/news/NS5705307352.html">the original</a> on 2013-01-27.</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=unknown&rft.btitle=World%27s+Largest+TELCO+Joins+Open+Source+Development+Labs&rft_id=http%3A%2F%2Fwww.linuxdevices.com%2Fnews%2FNS5705307352.html&rfr_id=info%3Asid%2Fen.wikipedia.org%3ANILFS" class="Z3988"></span></li> <li><a rel="nofollow" class="external text" href="https://web.archive.org/web/20090607074436/http://www.linux-mag.com/cache/7345/1.html">NILFS: A File System to Make SSDs Scream</a><sup><a href="/wiki/Template:Usurped/doc" title="Template:Usurped/doc">[usurped]</a></sup></li> <li>Manjaro tutorial <a rel="nofollow" class="external text" href="https://forum.manjaro.org/t/nilfs-a-filesystem-designed-to-minimize-the-likelyhood-of-data-loss/15091">NILFS: A filesystem designed to minimize the likelyhood [sic] of data loss </a> <a rel="nofollow" class="external text" href="https://web.archive.org/web/20170106230034/https://forum.manjaro.org/t/nilfs-a-filesystem-designed-to-minimize-the-likelyhood-of-data-loss/15091">Archived</a> 2017-01-06 at the <a href="/wiki/Wayback_Machine" title="Wayback Machine">Wayback Machine</a></li></ul> <div class="navbox-styles"><style data-mw-deduplicate="TemplateStyles:r1129693374">.mw-parser-output .hlist dl,.mw-parser-output .hlist ol,.mw-parser-output .hlist ul{margin:0;padding:0}.mw-parser-output .hlist dd,.mw-parser-output .hlist dt,.mw-parser-output .hlist li{margin:0;display:inline}.mw-parser-output .hlist.inline,.mw-parser-output .hlist.inline dl,.mw-parser-output .hlist.inline ol,.mw-parser-output .hlist.inline ul,.mw-parser-output .hlist dl dl,.mw-parser-output .hlist dl ol,.mw-parser-output .hlist dl ul,.mw-parser-output .hlist ol dl,.mw-parser-output .hlist ol ol,.mw-parser-output .hlist ol ul,.mw-parser-output .hlist ul dl,.mw-parser-output .hlist ul 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aria-labelledby="File_systems" style="padding:3px"><table class="nowraplinks hlist mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><style data-mw-deduplicate="TemplateStyles:r1239400231">.mw-parser-output .navbar{display:inline;font-size:88%;font-weight:normal}.mw-parser-output .navbar-collapse{float:left;text-align:left}.mw-parser-output .navbar-boxtext{word-spacing:0}.mw-parser-output .navbar ul{display:inline-block;white-space:nowrap;line-height:inherit}.mw-parser-output .navbar-brackets::before{margin-right:-0.125em;content:"[ "}.mw-parser-output .navbar-brackets::after{margin-left:-0.125em;content:" ]"}.mw-parser-output .navbar li{word-spacing:-0.125em}.mw-parser-output .navbar a>span,.mw-parser-output .navbar a>abbr{text-decoration:inherit}.mw-parser-output .navbar-mini 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this template">e</abbr></a></li></ul></div><div id="File_systems" style="font-size:114%;margin:0 4em"><a href="/wiki/File_system" title="File system">File systems</a></div></th></tr><tr><td class="navbox-abovebelow" colspan="2"><div> <ul><li><a href="/wiki/Comparison_of_file_systems" title="Comparison of file systems">Comparison of file systems</a> <ul><li><a href="/wiki/Comparison_of_distributed_file_systems" title="Comparison of distributed file systems">distributed</a></li></ul></li> <li><a href="/wiki/Unix_filesystem" title="Unix filesystem">Unix filesystem</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Disk and<br />non-rotating</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Advanced_Disc_Filing_System" title="Advanced Disc Filing System">ADFS</a></li> <li><a href="/wiki/AdvFS" title="AdvFS">AdvFS</a></li> <li><a href="/wiki/Amiga_Fast_File_System" title="Amiga Fast File System">Amiga FFS</a></li> <li><a href="/wiki/Amiga_Old_File_System" title="Amiga Old File System">Amiga OFS</a></li> <li><a href="/wiki/Apple_File_System" title="Apple File System">APFS</a></li> <li><a href="/wiki/AtheOS_File_System" class="mw-redirect" title="AtheOS File System">AthFS</a></li> <li><a href="/wiki/Bcachefs" title="Bcachefs">bcachefs</a></li> <li>BFS <ul><li><a href="/wiki/Be_File_System" title="Be File System">Be File System</a></li> <li><a href="/wiki/Boot_File_System" title="Boot File System">Boot File System</a></li> <li>Byte File System (<a href="/wiki/Z/VM" title="Z/VM">z/VM</a>)</li></ul></li> <li><a href="/wiki/Btrfs" title="Btrfs">Btrfs</a></li> <li><a href="/wiki/StorNext_File_System" title="StorNext File System">CVFS</a></li> <li><a href="/wiki/CXFS" title="CXFS">CXFS</a></li> <li><a href="/wiki/Disc_Filing_System" title="Disc Filing System">DFS</a></li> <li>EFS <ul><li><a href="/wiki/Encrypting_File_System" title="Encrypting File System">Encrypting File System</a></li> <li><a href="/wiki/Extent_File_System" title="Extent File System">Extent File System</a></li></ul></li> <li><a href="/wiki/Episode_filesystem" title="Episode filesystem">Episode</a></li> <li><a href="/wiki/Extended_file_system" title="Extended file system">ext</a> <ul><li><a href="/wiki/Ext2" title="Ext2">ext2</a></li> <li><a href="/wiki/Ext3" title="Ext3">ext3</a></li> <li><a href="/wiki/Ext3cow" title="Ext3cow">ext3cow</a></li> <li><a href="/wiki/Ext4" title="Ext4">ext4</a></li></ul></li> <li><a href="/wiki/File_Allocation_Table" title="File Allocation Table">FAT</a> <ul><li><a href="/wiki/ExFAT" title="ExFAT">exFAT</a></li></ul></li> <li><a href="/wiki/Files-11" title="Files-11">Files-11</a></li> <li><a href="/wiki/Fossil_(file_system)" title="Fossil (file system)">Fossil</a></li> <li><a href="/wiki/GPFS" title="GPFS">GPFS</a></li> <li><a href="/wiki/HAMMER_(file_system)" title="HAMMER (file system)">HAMMER</a> <ul><li><a href="/wiki/HAMMER2" title="HAMMER2">HAMMER2</a></li></ul></li> <li><a href="/wiki/Hierarchical_File_System_(Apple)" title="Hierarchical File System (Apple)">HFS</a> (<a href="/wiki/Classic_Mac_OS" title="Classic Mac OS">Classic Mac OS</a>)</li> <li><a href="/wiki/Hierarchical_File_System_(IBM_MVS)" title="Hierarchical File System (IBM MVS)">HFS</a> (<a href="/wiki/MVS" title="MVS">MVS</a>)</li> <li><a href="/wiki/HFS_Plus" title="HFS Plus">HFS+</a></li> <li><a href="/wiki/High_Performance_File_System" title="High Performance File System">HPFS</a></li> <li><a href="/wiki/High_Throughput_File_System" title="High Throughput File System">HTFS</a></li> <li><a href="/wiki/JFS_(file_system)" title="JFS (file system)">JFS</a></li> <li><a href="/wiki/Log-structured_File_System_(BSD)" title="Log-structured File System (BSD)">LFS</a></li> <li>MFS <ul><li><a href="/wiki/Macintosh_File_System" title="Macintosh File System">Macintosh File System</a></li> <li><a href="/wiki/TiVo_Media_File_System" title="TiVo Media File System">TiVo Media File System</a></li></ul></li> <li><a href="/wiki/MINIX_file_system" title="MINIX file system">MINIX</a></li> <li><a href="/wiki/NetWare_File_System" title="NetWare File System">NetWare File System</a></li> <li><a href="/wiki/Next3" title="Next3">Next3</a></li> <li><a class="mw-selflink selflink">NILFS</a> <ul><li><a class="mw-selflink selflink">NILFS2</a></li></ul></li> <li><a href="/wiki/Novell_Storage_Services" title="Novell Storage Services">NSS</a></li> <li><a href="/wiki/NTFS" title="NTFS">NTFS</a></li> <li><a href="/wiki/OneFS_distributed_file_system" title="OneFS distributed file system">OneFS</a></li> <li><a href="/wiki/OpenZFS" title="OpenZFS">OpenZFS</a></li> <li><a href="/wiki/Professional_File_System" title="Professional File System">PFS</a></li> <li><a href="/wiki/QFS" title="QFS">QFS</a></li> <li><a href="/wiki/QNX4FS" title="QNX4FS">QNX4FS</a></li> <li><a href="/wiki/ReFS" title="ReFS">ReFS</a></li> <li><a href="/wiki/ReiserFS" title="ReiserFS">ReiserFS</a> <ul><li><a href="/wiki/Reiser4" title="Reiser4">Reiser4</a></li></ul></li> <li><a href="/wiki/Datalight#Reliance_family" title="Datalight">Reliance</a></li> <li><a href="/wiki/Datalight#Reliance_Nitro" title="Datalight">Reliance Nitro</a></li> <li><a href="/wiki/Remote_File_Sharing" title="Remote File Sharing">RFS</a></li> <li>SFS <ul><li>Shared File System (<a href="/wiki/VM_(operating_system)" title="VM (operating system)">VM</a>)</li> <li><a href="/wiki/Smart_File_System" title="Smart File System">Smart File System</a></li></ul></li> <li><a href="/wiki/StorNext_File_System" title="StorNext File System">SNFS</a></li> <li><a href="/wiki/Soup_(Apple)" title="Soup (Apple)">Soup (Apple)</a></li> <li><a href="/wiki/Tux3" title="Tux3">Tux3</a></li> <li><a href="/wiki/UBIFS" title="UBIFS">UBIFS</a></li> <li><a href="/wiki/Unix_File_System" title="Unix File System">UFS/UFS2</a> <ul><li><a href="/wiki/Soft_updates" title="Soft updates">soft updates</a></li> <li><a href="/wiki/Write_Ahead_Physical_Block_Logging" title="Write Ahead Physical Block Logging">WAPBL</a></li></ul></li> <li><a href="/wiki/Veritas_File_System" title="Veritas File System">VxFS</a></li> <li><a href="/wiki/Write_Anywhere_File_Layout" title="Write Anywhere File Layout">WAFL</a></li> <li><a href="/wiki/Xiafs" title="Xiafs">Xiafs</a></li> <li><a href="/wiki/XFS" title="XFS">XFS</a></li> <li><a href="/wiki/Xsan" title="Xsan">Xsan</a></li> <li><a href="/wiki/ZFS_(z/OS_file_system)" title="ZFS (z/OS file system)">zFS</a> (<a href="/wiki/Z/OS" title="Z/OS">z/OS</a>)</li> <li><a href="/wiki/ZFS" title="ZFS">ZFS</a> (<a href="/wiki/Sun_Microsystems" title="Sun Microsystems">Sun</a>)</li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Optical_disc" title="Optical disc">Optical disc</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/High_Sierra_Format" class="mw-redirect" title="High Sierra Format">HSF</a></li> <li><a href="/wiki/ISO_9660" title="ISO 9660">ISO 9660</a></li> <li><a href="/wiki/ISO_13490" title="ISO 13490">ISO 13490</a></li> <li><a href="/wiki/Universal_Disk_Format" title="Universal Disk Format">UDF</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Flash_memory" title="Flash memory">Flash memory</a> and <a href="/wiki/Solid-state_drive" title="Solid-state drive">SSD</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Apple_File_System" title="Apple File System">APFS</a></li> <li><a href="/wiki/File_Allocation_Table" title="File Allocation Table">FAT</a></li> <li><a href="/wiki/ExFAT" title="ExFAT">exFAT</a></li> <li><a href="/wiki/Transaction-Safe_FAT_File_System" title="Transaction-Safe FAT File System">TFAT</a></li> <li><a href="/wiki/EROFS" title="EROFS">EROFS</a></li> <li><a href="/wiki/F2FS" title="F2FS">F2FS</a></li> <li><a href="/wiki/JFS_(file_system)" title="JFS (file system)">JFS</a></li> <li><a href="/wiki/Non-Volatile_File_System" title="Non-Volatile File System">NVFS</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th id="host-side_wear_leveling" scope="row" class="navbox-group" style="width:1%">host-side <a href="/wiki/Wear_leveling" title="Wear leveling">wear leveling</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/CHFS" title="CHFS">CHFS</a></li> <li><a href="/wiki/JFFS" title="JFFS">JFFS</a></li> <li><a href="/wiki/JFFS2" title="JFFS2">JFFS2</a></li> <li><a href="/wiki/LogFS" title="LogFS">LogFS</a></li> <li><a class="mw-selflink selflink">NILFS</a> <ul><li><a class="mw-selflink selflink">NILFS2</a></li></ul></li> <li><a href="/wiki/YAFFS" title="YAFFS">YAFFS</a></li> <li><a href="/wiki/UBIFS" title="UBIFS">UBIFS</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Clustered_file_system#Distributed_file_systems" title="Clustered file system">Distributed parallel</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/BeeGFS" title="BeeGFS">BeeGFS</a></li> <li><a href="/wiki/Ceph_(software)" title="Ceph (software)">Ceph</a></li> <li><a href="/wiki/CXFS" title="CXFS">CXFS</a></li> <li><a href="/wiki/GFS2" title="GFS2">GFS2</a></li> <li><a href="/wiki/Google_File_System" title="Google File System">Google File System</a></li> <li><a href="/wiki/OCFS2" title="OCFS2">OCFS2</a></li> <li><a href="/wiki/OrangeFS" title="OrangeFS">OrangeFS</a></li> <li><a href="/wiki/Parallel_Virtual_File_System" title="Parallel Virtual File System">PVFS</a></li> <li><a href="/wiki/Quantcast_File_System" title="Quantcast File System">QFS</a></li> <li><a href="/wiki/Xsan" title="Xsan">Xsan</a></li> <li><i><a href="/wiki/List_of_file_systems#Distributed_parallel_file_systems" title="List of file systems">more...</a></i></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Network-attached_storage" title="Network-attached storage">NAS</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/9P_(protocol)" title="9P (protocol)">9P</a></li> <li><a href="/wiki/Andrew_File_System" title="Andrew File System">AFS</a> (<a href="/wiki/OpenAFS" title="OpenAFS">OpenAFS</a>)</li> <li><a href="/wiki/Apple_Filing_Protocol" title="Apple Filing Protocol">AFP</a></li> <li><a href="/wiki/Coda_(file_system)" title="Coda (file system)">Coda</a></li> <li><a href="/wiki/Distributed_File_System_(Microsoft)" title="Distributed File System (Microsoft)">DFS</a></li> <li><a href="/wiki/Google_File_System" title="Google File System">Google File System</a></li> <li><a href="/wiki/GPFS" title="GPFS">GPFS</a></li> <li><a href="/wiki/Lustre_(file_system)" title="Lustre (file system)">Lustre</a></li> <li><a href="/wiki/NetWare_Core_Protocol" title="NetWare Core Protocol">NCP</a></li> <li><a href="/wiki/Network_File_System" title="Network File System">NFS</a></li> <li><a href="/wiki/Elliptics" title="Elliptics">POHMELFS</a></li> <li><a href="/wiki/Apache_Hadoop" title="Apache Hadoop">Hadoop</a></li> <li><a href="/wiki/Server_Message_Block" title="Server Message Block">SMB (CIFS)</a></li> <li><a href="/wiki/SSHFS" title="SSHFS">SSHFS</a></li> <li><i><a href="/wiki/List_of_file_systems#Distributed_file_systems" title="List of file systems">more...</a></i></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Specialized</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Aufs" title="Aufs">Aufs</a></li> <li><a href="/wiki/AXFS" title="AXFS">AXFS</a></li> <li><a href="/wiki/Boot_File_System" title="Boot File System">Boot File System</a></li> <li><a href="/wiki/CDfs" title="CDfs">CDfs</a></li> <li><a href="/wiki/Compact_Disc_File_System" title="Compact Disc File System">Compact Disc File System</a></li> <li><a href="/wiki/Cramfs" title="Cramfs">cramfs</a></li> <li><a href="/wiki/Davfs2" title="Davfs2">Davfs2</a></li> <li><a href="/wiki/EROFS" title="EROFS">EROFS</a></li> <li><a href="/wiki/FTPFS" title="FTPFS">FTPFS</a></li> <li><a href="/wiki/Filesystem_in_Userspace" title="Filesystem in Userspace">FUSE</a></li> <li><a href="/wiki/Lnfs" title="Lnfs">Lnfs</a></li> <li><a href="/wiki/Linear_Tape_File_System" title="Linear Tape File System">LTFS</a></li> <li><a href="/wiki/NOVA_(filesystem)" title="NOVA (filesystem)">NOVA</a></li> <li><a href="/wiki/Rational_MultiVersion_File_System" class="mw-redirect" title="Rational MultiVersion File System">MVFS</a></li> <li><a href="/wiki/SquashFS" title="SquashFS">SquashFS</a></li> <li><a href="/wiki/FAT_filesystem_and_Linux" title="FAT filesystem and Linux">UMSDOS</a></li> <li><a href="/wiki/OverlayFS" title="OverlayFS">OverlayFS</a></li> <li><a href="/wiki/UnionFS" title="UnionFS">UnionFS</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Pseudo</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Configfs" title="Configfs">configfs</a></li> <li><a href="/wiki/Device_file" title="Device file">devfs</a></li> <li><a href="/wiki/Debugfs" title="Debugfs">debugfs</a></li> <li><a href="/wiki/Kernfs_(BSD)" title="Kernfs (BSD)">kernfs</a></li> <li><a href="/wiki/Procfs" title="Procfs">procfs</a></li> <li>specfs</li> <li><a href="/wiki/Sysfs" title="Sysfs">sysfs</a></li> <li><a href="/wiki/Tmpfs" title="Tmpfs">tmpfs</a></li> <li><a href="/wiki/WinFS" title="WinFS">WinFS</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Filesystem-level_encryption" title="Filesystem-level encryption">Encrypted</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/ECryptfs" title="ECryptfs">eCryptfs</a></li> <li><a href="/wiki/EncFS" title="EncFS">EncFS</a></li> <li><a href="/wiki/Encrypting_File_System" title="Encrypting File System">EFS</a></li> <li><a href="/wiki/Rubberhose_(file_system)" class="mw-redirect" title="Rubberhose (file system)">Rubberhose</a></li> <li><a href="/wiki/SSHFS" title="SSHFS">SSHFS</a></li> <li><a href="/wiki/Oracle_ZFS" title="Oracle ZFS">ZFS</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Types</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Clustered_file_system" title="Clustered file system">Clustered</a> <ul><li><a href="/wiki/Global_file_system" title="Global file system">Global</a></li> <li><a href="/wiki/Grid_file_system" title="Grid file system">Grid</a></li> <li><a href="/wiki/Self-certifying_File_System" title="Self-certifying File System">Self-certifying</a></li></ul></li> <li><a href="/wiki/Flash_file_system" title="Flash file system">Flash</a></li> <li><a href="/wiki/Journaling_file_system" title="Journaling file system">Journaling</a></li> <li><a href="/wiki/Log-structured_file_system" title="Log-structured file system">Log-structured</a></li> <li><a href="/wiki/Object_storage" title="Object storage">Object</a></li> <li><a href="/wiki/Record-oriented_filesystem" title="Record-oriented filesystem">Record-oriented</a></li> <li><a href="/wiki/Semantic_file_system" title="Semantic file system">Semantic</a></li> <li><a href="/wiki/Steganographic_file_system" title="Steganographic file system">Steganographic</a></li> <li><a href="/wiki/Synthetic_file_system" title="Synthetic file system">Synthetic</a></li> <li><a href="/wiki/Versioning_file_system" title="Versioning file system">Versioning</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Features</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><td colspan="2" class="navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Case_preservation" title="Case preservation">Case preservation</a></li> <li><a href="/wiki/Copy-on-write" title="Copy-on-write">Copy-on-write</a></li> <li><a href="/wiki/Data_deduplication" title="Data deduplication">Data deduplication</a></li> <li><a href="/wiki/Data_scrubbing" title="Data scrubbing">Data scrubbing</a></li> <li><a href="/wiki/Execute_in_place" title="Execute in place">Execute in place</a></li> <li><a href="/wiki/Extent_(file_systems)" title="Extent (file systems)">Extent</a></li> <li><a href="/wiki/File_attribute" title="File attribute">File attribute</a> <ul><li><a href="/wiki/Extended_file_attributes" title="Extended file attributes">Extended file attributes</a></li></ul></li> <li><a href="/wiki/File_change_log" title="File change log">File change log</a></li> <li><a href="/wiki/Fork_(file_system)" title="Fork (file system)">Fork</a></li> <li>Links <ul><li><a href="/wiki/Hard_link" title="Hard link">Hard</a></li> <li><a href="/wiki/Symbolic_link" title="Symbolic link">Symbolic</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Computer_access_control" title="Computer access control">Access control</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Access-control_list" title="Access-control list">Access-control list</a></li> <li><a href="/wiki/Filesystem-level_encryption" title="Filesystem-level encryption">Filesystem-level encryption</a></li> <li><a href="/wiki/File-system_permissions" title="File-system permissions">Permissions</a> <ul><li><a href="/wiki/Chmod" title="Chmod">Modes</a></li> <li><a href="/wiki/Sticky_bit" title="Sticky bit">Sticky bit</a></li></ul></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Interface_(computing)" title="Interface (computing)">Interfaces</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/File_manager" title="File manager">File manager</a></li> <li><a href="/wiki/File_system_API" title="File system API">File system API</a> <ul><li><a href="/wiki/Installable_File_System" title="Installable File System">Installable File System</a></li></ul></li> <li><a href="/wiki/Virtual_file_system" title="Virtual file system">Virtual file system</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/List_of_file_systems" title="List of file systems">Lists</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/List_of_cryptographic_file_systems" title="List of cryptographic file systems">Cryptographic</a></li> <li><a href="/wiki/List_of_default_file_systems" title="List of default file systems">Default</a></li> <li><a href="/wiki/List_of_log-structured_file_systems" title="List of log-structured file systems">Log-structured</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Layouts</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Master_Boot_Record" class="mw-redirect" title="Master Boot Record">Master Boot Record</a></li> <li><a href="/wiki/GUID_Partition_Table" title="GUID Partition Table">GUID Partition Table</a></li> <li><a href="/wiki/Apple_Partition_Map" title="Apple Partition Map">Apple Partition Map</a></li></ul> </div></td></tr></tbody></table></div>    </div><noscript><img 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