mfsnetdump(8)

📦
version 4.59.2 · 5 versions
, in arch rolling, nixos 26.05, nixpkgs unstable, ubuntu stonking

💅 mfsnetdump — like, the manual, but make it make sense

okay bestie, so this is mfsnetdump from the MooseFS manuals (section 8, system admin tools, iykyk) and honestly? it's giving tcpdump's cooler cousin who went to MooseFS school 🎀

✨ NAME ✨

mfsnetdump — dump network traffic as mfs packets 🦋

✨ SYNOPSIS ✨

mfsnetdump [-r PCAP_FILE] [-i INTERFACE] [-p PORT_RANGE] [-f
PCAP_FILTER] [-c PCOUNT] [-s MBYTES] [-e COMMANDS] [-o COMMANDS] [-x]
[-y] [-n]

✨ DESCRIPTION ✨

so mfsnetdump is an internal diagnostic tool — think of it as tcpdump but it woke up and chose MooseFS 💖 same energy, but it actually gets your mfs packets. obsessed.

🌸 OPTIONS 🌸

  • -r — point it at a PCAP file and it'll read packets from there instead of sniffing live, no cap. 📂
  • -i — dump packets using the network interface you name here.
  • -p — only show packets coming from this port range. the default range is 9419-9422, which means by default you're only seeing MFS packets. so pure, so clean ✨
  • -f — define the pcap filter you wanna filter packets with. your rules, your world 💅
  • -c — dump only PCOUNT packets and then dip. exit. done. 👑
  • -s — only dump the first MBYTES bytes of each packet (a lil snack instead of the whole meal 🍓).
  • -e — do not display the commands you list here. like, pretend they don't exist 🙈
  • -o — show only the commands you list here. curated. main character energy ⭐
  • -x — do not display mfs maintenance commands, such as CSTOMA_SPACE or CLTOMA_FUSE_TIME_SYNC. it's literally hiding the boring admin chatter for you 💀
  • -y — do not display open/close connection packets. bye bye handshake noise 🦋
  • -n — show the ANTOAN_NOP command. heads up: this one is disabled by default, so you gotta ask for it. 🎀

😭 REPORTING BUGS 😭

found a bug? spill the tea to <bugs@moosefs.com> and they'll handle it, fr fr. 🫶

Copyright (C) 2026 Jakub Kruszona-Zawadzki, Saglabs SA

This file is part of MooseFS.

MooseFS is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2 (only).

MooseFS is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, see <https://www.gnu.org/licenses/>.

bestie, that's the legal bit — it's real, it matters, and yes, "version 2 (only)" means exactly what it says 💜

and that's the whole page!! 🌈 this was MooseFS 4.59.2-1, dated May 2026, and you just read mfsnetdump(8). slay, go dump some packets, you're literally so good at this 💅✨🎀

📦 where this page comes from