trace_blkdev_zone_mgmt(9)

💅 trace_blkdev_zone_mgmt(9) — a Kernel API Manual moment

okay so bestie, welcome to trace_blkdev_zone_mgmt(9) 💖 we're hanging out in the Kernel API Manual today and honestly? this one is niche but iconic. it's the trace event that fires when somebody does a zone management operation across a whole range of zones. zoned storage girlies rise 🦋

---

✨ SYNOPSIS ✨

void trace_blkdev_zone_mgmt (struct bio *bio , sector_t nr_sectors );

like, that's the whole signature. two args. no notes. 🎀

---

🌸 ARGUMENTS 🌸

• bio — the block IO operation that got sent down to the device. this is the actual request doing the thing, okurrr 💅
• nr_sectors — how many sectors this operation is affecting. it's not just a random number bestie, it's literally the size of the zone range (more on that in a sec 👀)

---

🔥 DESCRIPTION 🔥

so what it does: it executes a zone management operation on a specified range of zones. that range is encoded in nr_sectors. and here's the part that will get you at the vibe check — nr_sectors has to be a multiple of the zone size. not "should be". has to be. periodt 💀

so yeah, no cap, that's the whole deal. the range lives in the sector count, and if it's not zone-size-aligned then you're not matching the contract, bestie. don't come for me, that's just what the page says 🙈

---

🦋 SEE ALSO 🦋

this section is a whole group chat of trace events lmaooo, but they all live in the kernel file ./include/trace/events/block.h — go say hi 🫶

• trace_block_touch_buffer(9)
• trace_block_dirty_buffer(9)
• trace_block_rq_requeue(9)
• trace_block_rq_complete(9)
• trace_block_rq_error(9)
• trace_block_rq_tag_wait(9)
• trace_block_rq_insert(9)
• trace_block_rq_issue(9)
• trace_block_rq_merge(9)
• trace_block_io_start(9)
• trace_block_io_done(9)
• trace_block_bio_complete(9)
• trace_block_bio_backmerge(9)
• trace_block_bio_frontmerge(9)
• trace_block_bio_queue(9)
• trace_block_getrq(9)
• trace_blk_zone_append_update_request_bio(9)
• trace_block_plug(9)
• trace_block_unplug(9)
• trace_block_split(9)
• trace_block_bio_remap(9)
• trace_block_rq_remap(9)

---

quick reminder: every single one of those has a (9) on it for a reason, they're all manpage girlies too. iykyk 💜

---

and that's the page bestie!! ✨ it's sourced from ./include/trace/events and the version/date stamp on the whole thing is October 2026, so like… future-coded of it honestly 🌈 mwah, go read your tracepoints 💋🎀