vdo_make_logical_zones(9)

✨ vdo_make_logical_zones(9) ✨

okay so bestie, welcome to the Kernel API Manual 💖 this one's a little function from the dm-vdo world and honestly it's giving "small but mighty" — it literally spins up a whole set of logical zones for you. no cap.

---

🌸 NAME 🌸

vdo_make_logical_zones — Create a set of logical zones.

like, that's the whole job. it makes the zones. iconic behavior tbh 🎀

---

🦋 SYNOPSIS 🦋

int vdo_make_logical_zones (struct vdo *vdo , struct logical_zones
**zones_ptr );

so it hands you back an int (iykyk that's your status code, bestie) and takes two things: the vdo and a pointer-to-pointer for the new zones. periodt. 💅

---

💜 ARGUMENTS 💜

• vdo — The vdo to which the zones will belong. basically the vibe-check parent of these zones, they're its children fr fr 🌈
• zones_ptr — A pointer to hold the new zones. this is where the freshly-made zones get parked, so don't lose it 🫶

---

⭐ RETURN ⭐

VDO_SUCCESS or an error code.

that's it, that's the whole contract — either it slays (VDO_SUCCESS) or it hands you an error code and you go 😭. no in-between.

---

🔥 SEE ALSO 🔥

eep, this is the fun part, the whole friend group 👑

Kernel file ./drivers/md/dm-vdo/logical-zone.c:

• as_logical_zone(9)
• initialize_zone(9)
• vdo_free_logical_zones(9)
• check_for_drain_complete(9)
• vdo_resume_logical_zones(9)
• update_oldest_active_generation(9)
• vdo_increment_logical_zone_flush_generation(9)
• vdo_acquire_flush_generation_lock(9)
• notify_flusher(9)
• attempt_generation_complete_notification(9)
• vdo_release_flush_generation_lock(9)
• vdo_dump_logical_zone(9)

like genuinely go read them all, they're lowkey all connected 🧚

---

ngl bestie, this page lives in ./drivers/md/dm-vdo — that's the kernel source tree, so don't come looking for it in your /usr/share/man and get confused 🙈

that's the whole page!! mwah 💋 — written up in October 2026, straight from the ./drivers/md/dm-vdo corner of the kernel tree, page vdo_make_logical_zones(9). stay slay, stay zoned 💅✨🍓