PROBE::IOSCHEDULER_TRACE.ELV_ABORT_REQUEST(3stap)

✨ NAME ✨

probe::ioscheduler_trace.elv_abort_request — ok bestie, this probe fires when a request is aborted 💅 it lives in the IO Scheduler and block IO Taps chapter of the SystemTap tapset reference, and it is so niche and so useful.

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🎀 SYNOPSIS 🎀

probe ioscheduler_trace.elv_abort_request {}

That's it. No args, no drama. She just sits there and waits for a request to get aborted, then she tells you everything 👑

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💖 VALUES 💖

Every one of these is a lil variable you get to peek at inside your probe handler. Collect them like Pokémon 🦋

• rq — the address of the request. That's the actual request object, the main character of this whole situation.
• disk_major — the disk major number of the request. Yes, numbers have majors. Slay.
• elevator_name — the type of I/O elevator that's currently enabled. The elevator is the scheduler, and she has a name 💅
• disk_minor — the disk minor number of the request. The little sibling of disk_major, no cap.
• rq_flags — the request flags. Little bits of metadata that say stuff about the request.
• name — the name of the probe point. It's giving "who am I", and the answer is literally the probe point's name.

ngl if you're debugging why requests keep getting aborted, rq_flags, elevator_name, disk_major and disk_minor are your besties here. Grab rq if you want to go deeper. 🫶

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🌈 SEE ALSO 🌈

• tapset::ioscheduler(3stap) — go read the whole ioscheduler tapset, she's iconic, iykyk.

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SystemTap Tapset Reference · Ver · September 2026 🎀

kk that's the whole page, thanks for coming to my ted talk, go abort some requests (responsibly) 💖✨🌸