61 lines
3.4 KiB
HTML
61 lines
3.4 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>Filesystems — Keru OS</title>
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<meta name="description" content="Choose your root filesystem with Keru: ext4, btrfs, xfs, zfs, f2fs, jfs, reiserfs, or swap.">
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<link rel="stylesheet" href="assets/css/style.css">
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<link rel="icon" href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100'><text y='.9em' font-size='90'>ける</text></svg>">
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</head>
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<body>
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<nav class="top" data-nav></nav>
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<header class="pagehead">
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<p class="crumbs"><a href="index.html">home</a> / <a href="swappables.html">swappables</a> / filesystems</p>
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<h1>Filesystems</h1>
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<p>The shape of your disk.</p>
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</header>
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<section>
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<div class="wrap">
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<div class="prose">
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<p>The filesystem is how the kernel organizes data on disk — and it's a genuinely meaningdifferent choice: reliability vs features, volume management, snapshots, checksums, performance on specific workloads. Keru leaves it to you.</p>
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</div>
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<table>
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<tr><th>Filesystem</th><th>Character</th></tr>
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<tr><td><strong>ext4</strong></td><td>The default. Proven, journaled, everywhere-supported, boring in the best way.</td></tr>
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<tr><td><strong>ext2 / ext3</strong></td><td>Classic lineage — ext2 is unjournaled simplicity, ext3 added the journal.</td></tr>
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<tr><td><strong>btrfs</strong></td><td>Snapshots, subvolumes, checksums, and a rich feature set out of the box.</td></tr>
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<tr><td><strong>xfs</strong></td><td>Scale-friendly, robust, excellent for large files and heavy workloads.</td></tr>
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<tr><td><strong>zfs</strong></td><td>Snapshots, RAID-Z, checksums, volume management. Serious features, more moving parts.</td></tr>
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<tr><td><strong>f2fs</strong></td><td>Flash-friendly filesystem, designed for SSDs and flash storage performance.</td></tr>
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<tr><td><strong>jfs</strong></td><td>IBM's journaled filesystem — lean, historically aimed at servers.</td></tr>
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<tr><td><strong>reiserfs</strong></td><td>Once a pioneer; now effectively unmaintained. Offered, but flagged.</td></tr>
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<tr><td><strong>swap</strong></td><td>As a separate swap area, part of the root setup.</td></tr>
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</table>
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<div class="prose">
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<h3>Honest flags</h3>
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<p>Two filesystem options carry warnings in the installer:</p>
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<ul class="features">
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<li><strong>zfs</strong> as root needs a kernel module + ZFS userspace, and isn't yet proven end-to-end in the 0.1 pipeline. Warned, not blocked.</li>
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<li><strong>reiserfs</strong> is unmaintained with no stable future. Offered because the choice is yours; flagged because honesty is cheaper than regret.</li>
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</ul>
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<div class="callout">The filesystem tooling (mkfs, fs tools) is built alongside the kernel and init in stage 2 — your choice dictating exactly what gets compiled in.</div>
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<p><a href="swappables.html">← All swappables</a></p>
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</div>
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</section>
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