PROBE::NFSD.PROC(3stap)

💅 PROBE::NFSD.PROC(3stap) — Network File Storage Tapsets

okay bestie, come sit with me, we're doing the nfsd.proc.read probe from the SystemTap tapset fam ✨ it's the one that catches your NFS server in 4K while it's out here reading a file for a client. main character behavior, honestly.

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🌸 NAME 🌸

probe::nfsd.proc.read — it's giving NFS server reading file for client. that's the whole vibe. no cap.

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✨ SYNOPSIS ✨

probe nfsd.proc.read {}

literally just the probe point, no arguments, she takes zero notes and zero parameters 🎀

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🦋 VALUES 🦋

okay so when this probe fires, these are all the little goodies you get handed. every single one. not skipping a single one, i would never 😭

• version — the nfs version. which flavor of NFS we're dealing with 💜
• size — read bytes. the size of the read, babes 📏
• fh — the file handle. and heads up, the first part is the length of the file handle, so don't get confused when you peek at it 👀
• uid — requester's user id. who's asking for this file, bestie 🫶
• offset — the offset of file. where in the file we're at, like a little bookmark 🔖
• vlen — read blocks 📦
• count — read bytes. yes, again. she said it twice, i don't make the rules 💀
• proto — transfer protocol 🌐
• client_ip — the ip address of client. hi bestie, i see you over there 📍
• gid — requester's group id. the whole squad id 💖
• vec — a struct kvec, and it includes buf address in kernel address and length of each buffer. so it's carrying the kernel-side buffer address and the length of every buffer. iconic little struct, honestly 👑

not me listing every single one of these and still wanting to list them again. the dedication. the commitment. the way that i care 🥹

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🌈 SEE ALSO 🌈

• tapset::nfsd(3stap) — go read this one next, iykyk 🦋

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and that's the whole page, bestie, you ate that 💅✨ SystemTap Tapset Reference, Ver, September 2026 — mwah, love you, go read some probes 🎀👑