PROBE::NFSD.PROC(3stap)

💖 PROBE::NFSD.PROC(3stap) 💖

okay bestie, so this page lives in the Network File Storage Tapsets section of the SystemTap Tapset Reference, and it's all about one specific probe. no cap, it's a whole vibe. 🦋

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🌸 NAME 🌸

probe::nfsd.proc.write — the NFS server out here writing data to a file for a client. main character behavior, honestly. 👑

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✨ SYNOPSIS ✨

probe nfsd.proc.write {}

that's it. that's the whole thing. lowkey iconic. 💅

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🎀 VALUES 🎀

every one of these is a little treat that gets handed to your probe. don't skip any, they're all important fr fr:

• offset — where in the file we're at. the offset of the file, periodt. 📍
• fh — the file handle. and heads up, the first part of it is literally the length of the file handle, so don't get it twisted. 🔑
• vec — a struct kvec, which is giving "buf address in kernel address" plus the length of each buffer. it's a whole package. 📦
• client_ip — the ip address of the client. who's asking? now you know. 🌐
• proto — the transfer protocol. the ~method of transport~ if you will. 🚀
• count — read bytes. yes, bytes. 🧮
• vlen — read blocks. blocks, not bytes, don't mix them up bestie. 🧱
• stable — this one's just argp->stable. that's the whole description. it is what it is. 💀
• uid — the requester's user id. 🆔
• version — the nfs version. 🏷️
• size — read bytes. (yes, same one-liner as count — the manpage said it, so I'm saying it.) 📏
• gid — the requester's group id. 👥

not me listing twelve values and two of them have the identical description 😭 the docs are the docs, we respect them.

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🔥 SEE ALSO 🔥

• tapset::nfsd(3stap) — go read that one too, it's the sister page and she ate. 🫶

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and that's the whole page, bestie!! you understood it, I'm so proud. 🥹💖

SystemTap Tapset Reference, September 2026 — mwah, go forth and trace some NFS writes. 🧚✨🌈