man(5)

💅 man(5) — the nfsrahead glow-up, bestie edition 🦋

okay so this is a page from the man manual set, and the star of the show is nfsrahead. sit down, hydrate, and let's get into it ✨

🌸 NAME 🌸

nfsrahead — configure the readahead for NFS mounts 💖

✨ SYNOPSIS ✨

nfsrahead [-F] [-d] <device>

🎀 DESCRIPTION 🎀

so nfsrahead is a tool that's literally designed to be used with udev, and its whole job is setting the read_ahead_kb parameter of NFS mounts, and it does that based on the configuration file (scroll down to CONFIGURATION, bestie, it's right there).

and <device>? that's the device number for the NFS backing device, as provided by the kernel. no cap. 👑

💅 OPTIONS 💅

• -F — sends messages to stderr instead of syslog. it's giving "i want my messages right here, right now" 🙈
• -d — increases the debugging level. turn it up, bestie, we're investigating 🔍

🌈 CONFIGURATION 🌈

nfsrahead gets configured in /etc/nfs.conf, inside the section titled nfsrahead. and it accepts the following configs, periodt:

• nfs=<value> — the readahead value that gets applied to NFSv3 mounts 🍓
• nfs4=<value> — the readahead value that gets applied to NFSv4 mounts 🧚
• default=<value> — the default configuration for when none of the configurations above is set. the fallback queen 👑

⭐ EXAMPLE CONFIGURATION ⭐

[nfsrahead]
nfs=15000              # readahead of 15000 for NFSv3 mounts
nfs4=16000             # readahead of 16000 for NFSv4 mounts
default=128            # default is 128

look at that. immaculate. no notes. 💯

👀 SEE ALSO 👀

mount.nfs(8), nfs(5), nfs.conf(5), udev(7), bcc-readahead(8)

go read those too, bestie, we love a well-rounded education 📚

💀 BUGS 💀

no known bugs. she's flawless. not a single crumb. 💅✨

🫶 AUTHOR 🫶

Thiago Rafael Becker <trbecker@gmail.com> — thank you for your service, king 👑

ngl, if you made it this far you're lowkey an NFS main character now. iconic behavior. 🔥

version 1.0, dated 08 Mar 2022, and yeah it's filed under man(5) — love that for us. mwah. bye bestie! 😭💜