libnvmf_con...et_io_queues(9)

💅 NAME 💅

libnvmf_context_set_io_queues — bestie, this is the one that sets up your whole I/O queue topology for the context ✨

Ok so real talk, this page is from the libnvme API manual (yes, the libnvme girlies are thriving) and honestly? It's giving "one setter to rule them all" 🎀

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✨ SYNOPSIS ✨

int libnvmf_context_set_io_queues (struct libnvmf_context *fctx , int
nr_io_queues , int nr_write_queues , int nr_poll_queues , int queue_size
, bool disable_sqflow );

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🦋 ARGUMENTS 🦋

• fctx — the Fabrics context 💜 like, the whole vibe lives in here
• nr_io_queues — how many I/O queues you want, periodt
• nr_write_queues — how many write-only queues (yes, they exist, and they eat)
• nr_poll_queues — how many polling queues 🌸
• queue_size — number of entries per I/O queue (this is the SQSIZE in the Connect command, iykyk 👑)
• disable_sqflow — ngl this one just disables SQ flow control negotiation 🙈

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🌈 DESCRIPTION 🌈

Okay so this is a convenience setter for the five parameters that together define the I/O queue structure used when you establish a controller connection 🔥 All five of them feed directly into the Connect command at queue creation time — no detours, no middleman, straight in 💅

And here's the part that lowkey trips people up: nr_write_queues and nr_poll_queues are additive 🫶 So the total I/O queues is literally:

nr_io_queues + nr_write_queues + nr_poll_queues

Like, do not just eyeball nr_io_queues and call it a day, you'll be off by however many extras you threw in 😭

Also! If you only need to change a subset of these, there are individual accessors waiting for you, and they're all iconic in their own right:

• libnvmf_context_set_nr_io_queues
• _set_nr_write_queues
• _set_nr_poll_queues
• _set_queue_size
• _set_disable_sqflow

Use the big one when you're changing everything, use the little ones when you're just touching up one thing ✨ main character energy either way.

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⭐ RETURN ⭐

0 on success, negative error code otherwise. That's it, that's the whole vibe check 💖

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🧚 Friendly reminder bestie: the two extra queue counts are additive to the total — don't let that sneak up on you 🎀

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And that's the page! Big kisses from the libnvme API manual, dated October 2026 — go forth and queue responsibly 🦋✨💜