EXT2FS(5)

💅 EXT2FS(5) 💅

okay so bestie, welcome to ext2fs(5) — that's the File Formats Manual page for the ext2/ext3/ext4 file system 🎀 this whole thing lives in section 5, and it's basically the lore drop for how FreeBSD talks to your ext-family disks. buckle up, it's short but it's iconic ✨

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🌸 NAME 🌸

ext2fs — the ext2/ext3/ext4 file system, aka your friendly neighborhood Linux-flavored disk format 🦋

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✨ SYNOPSIS ✨

so there's two ways to get this driver into your life, and honestly? both slay 💅

if you want to link it straight into the kernel:

options EXT2FS

if you'd rather load it as a kernel loadable module (main character energy, no reboot):

kldload ext2fs

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💖 DESCRIPTION 💖

okay so here's the tea ☕ the ext2fs driver is what lets the FreeBSD kernel access ext2 file systems and its derivatives — yes, the whole family, we love a supportive sibling situation 🫶

it currently implements most of the features required by ext3 and ext4 file systems. not all, most. we're being honest here 🌈

⚠️ heads up bestie: support for Extended Attributes in ext4 is experimental — like, it works, but it's giving "still in beta, don't @ me" energy 😭

and the big one, no cap:

💀 Journalling and encryption are currently not supported. periodt. don't come for me, that's just what the page says.

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🔥 EXAMPLES 🔥

want to mount an ext2fs volume that lives on /dev/ada1s1? say less, bestie:

mount -t ext2fs /dev/ada1s1 /mnt

literally that's it. /mnt is where it lands, and you're living your best life 🎀

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👑 SEE ALSO 👑

go read these besties too, they're all in the friend group 💜

• nmount(2)
• unmount(2)
• fstab(5)
• mount(8)

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🧚 HISTORY 🧚

the ext2fs driver first appeared in FreeBSD 2.2 ⭐ so yeah, she's a legacy icon. been here. done that. still relevant. iykyk 💅

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🌈 AUTHORS 🌈

okay this is the credits section and honestly everyone here ate 🔥

• the ext2fs kernel implementation is derived from code written, or modified, by Godmar Back, using the UFS CSRG sources for CMU Mach — a whole lineage, we love to see it 🦋
• John Dyson did the initial port to FreeBSD 🙌
• Aditya Sarawgi merged important parts of the allocation code from a clean-room NetBSD implementation ✨
• Zheng Liu and Fedor Uporov implemented the read and write support respectively for ext4 filesystems — read AND write, tag team of the century 🫶
• the FreeBSD community has contributed a huge amount of modifications — group project but make it actually good 💖
• the initial version of this manual page was written by Craig Rodrigues <rodrigc@FreeBSD.org> 🎀 legend behavior

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and that's the whole page bestie, no crumbs left 💅 this edition came courtesy of Debian, dated December 30, 2018, filed under EXT2FS(5) — go forth and mount responsibly 🌸✨