gfs2_check_sb(9)

📦 version 7.3.1, in nixpkgs unstable

💅 gfs2_check_sb(9) — like, the Kernel API Manual entry, bestie

okay so this is a page from the Kernel API Manual and it's about one tiny but lowkey crucial function: gfs2_check_sb. yes. superblock checking. we love a vibe check for your filesystem. 🦋

✨ NAME ✨

gfs2_check_sb — Check superblock. that's it, that's the whole name. short, sweet, iconic. 👑

✨ SYNOPSIS ✨

int gfs2_check_sb (struct gfs2_sbd *sdp , int silent );

like, exactly that. don't come for the spacing, it's canon. 💅

✨ ARGUMENTS ✨

  • sdp — the filesystem. literally the struct gfs2_sbd * bestie in question, the whole filesystem she's checking up on. 🫶
  • silent — Don't print a message if the check fails. an int, and it's giving "no thoughts, head empty, keep the console quiet" energy. 🙈

✨ DESCRIPTION ✨

so what does she actually do? two things, and she does them well:

  • Checks the version code of the FS is one that we understand how to read. like, is this a version we can actually parse or are we about to be confused? 🔥
  • And checks that the sizes of the various on-disk structures have not changed. no sneaky size drift, no "wait, that used to be a different number of bytes" moments. ngl, very responsible of her. ✨

that's the whole gig. if you passed silent as true-ish, she just keeps it cute and quiet when the check fails — no message, no drama (well, the failure is still a failure, bestie, she's just not gonna announce it 💀).

✨ SEE ALSO ✨

Kernel file ./fs/gfs2/ops_fstype.c — go read her house, that's where she lives 🎀

and the whole friend group:

no cap, that's the full squad. iykyk. 🌈

aaand that's the page, bestie 💖 this little baddie lives under ./fs/gfs2 and the manual's dated October 2026 — main character energy, periodt. go check those superblocks, slay, and remember: no silent messages unless you asked for 'em. 🧚⭐

📦 where this page comes from