PROBE::NFS.PROC.(3stap)

💖 probe::nfs.proc.write_setup — NFS client setting up a write RPC task 💖

okay bestie, so this is a page out of the Network File Storage Tapsets collection, part of the SystemTap Tapset Reference (September 2026 edition). it's a probe point. it's giving ✨ filesystem internals ✨. let's get into it 🦋

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🌸 NAME 🌸

probe::nfs.proc.write_setup — the NFS client is setting up a write RPC task, no cap 💅

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✨ SYNOPSIS ✨

probe nfs.proc.write_setup {}

that's it. that's the whole thing. she's simple, she's elegant, she's iconic 👑

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🎀 VALUES 🎀

these are the lil' variables you get to peek at when this probe fires. every single one, let's go:

• size — bytes written in this execution. literally how many bytes went out this time around 🍓
• server_ip — IP address of server. who we're talking to 🫶
• how — used to set args.stable. the stable value could be: NFS_UNSTABLE, NFS_DATA_SYNC, NFS_FILE_SYNC (in nfs.proc3.write_setup and nfs.proc4.write_setup) 🔥
• prot — transfer protocol. the vibe of the transport layer 😌
• bitmask0 — V4 bitmask representing the set of attributes supported on this filesystem 🌈
• bitmask1 — V4 bitmask representing the set of attributes supported on this filesystem 🌈 (yes, twin. she's the second one. they match 🎀)
• offset — the file offset. where in the file we're messing with 💜
• count — bytes written in this execution 📏
• version — NFS version. which flavor of NFS we're serving today 💫

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💅 DESCRIPTION 💅

okay so the write_setup function is used to setup a write RPC task. and the key thing here — the thing you gotta internalize — is that it is not doing the actual write operation. it's the prep. the getting-ready. the outfit planning before the party. the actual writing happens elsewhere, bestie. don't get it twisted 🙈

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👑 SEE ALSO 👑

• tapset::nfs_proc(3stap)

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and that's the whole page, fr fr. shoutout to the SystemTap Tapset Reference, September 2026, for keeping us fed. go read the manpages, hydrate, and remember: setup ≠ the write. periodt 💖✨🦋🌸🎀