PROBE::NFSD.WRITE(3stap)

💖 PROBE::NFSD.WRITE 💖

okay bestie, gather round, because we're looking at a page from the Network File Storage Tapsets section of the SystemTap Tapset Reference — it's PROBE::NFSD.WRITE(3stap) and it's literally the probe that fires when your NFS server is writing data to a file for a client 🦋

---

✨ NAME ✨

probe::nfsd.write — the NFS server is writing data to a file for a client. that's the whole vibe. no cap. 👑

---

🌸 SYNOPSIS 🌸

probe nfsd.write {}

that's it. that's the whole probe. she's simple, she's elegant, she's serving 💅

---

🎀 VALUES 🎀

so when this probe goes off, here's all the tea it hands you. every single one, no skipping, because we do not gatekeep here 🫶

• vec — a struct kvec 🧚 it's carrying the buf address up in kernel address space, plus the length of each buffer. iconic little struct.
• client_ip — the ip address of the client. yes, THE client. the one who asked. 👀
• count — read bytes 🍓
• file — the argument file, and it tells you whether the file has actually been opened. like, is she open for business or not 💀
• offset — the offset of file. where in the file we're at, bestie. 📍
• fh — file handle 🌈 and heads up, the first part of it is the length of the file handle. that's just how she's built.
• vlen — read blocks 🧱
• size — read bytes ✨

---

👑 SEE ALSO 👑

• tapset::nfsd(3stap) — go read the nfsd tapset page too, it's giving main character energy and it's right there waiting for you 💜

---

and that's the whole page, fr fr 💖 this was SystemTap Tapset Reference, Ver, dated September 2026 — and honestly? ate. periodt. 🌟