SBP(4)

💖 NAME 💖

ok so <pink>sbp</pink> — the Serial Bus Protocol 2 (SBP-2) Mass Storage Devices driver. that's it, that's the whole vibe, it makes your SBP-2 storage devices work. 🦋

✨ SYNOPSIS ✨

bestie you gotta load these, either as modules:

kldload firewire
kldload cam
kldload sbp

or as devices compiled into your kernel:

device sbp
device firewire
device scbus
device da
device cd
device pass

🌸 DESCRIPTION 🌸

okay so the sbp driver gives you support for SBP-2 devices that attach to the FireWire (IEEE 1394) port. 💅 it should work with any SBP-2 device the CAM layer supports — for example, HDDs, CDROM drives and DVD drives. iconic.

now, some of y'all who already know umass(4) might be sitting there like "wait, why is the device not detached at the CAM layer the second i unplug it?? 🤨" and honestly that's a fair question, so here's the tea: it only gets detached if the device has not been plugged again during several bus resets. the reason is lowkey sweet — it's to prevent detaching an active file system, even when the device can't be probed correctly for some reason after a bus reset, or when the device is temporarily disconnected because the user changes the bus topology. no cap, it's protecting you from yourself. 🫶

so if you really wanna force-detach that device: run fwcontrol -r several times, or set hw.firewire.hold_count=0 with sysctl(8). your call bestie, but it said what it said. 💀

and one more thing — some (broken 🙈) HDDs do not work well with tagged queuing. if you're having problems with drives like that, try:

camcontrol [device id] tags -N 1

to disable tagged queuing. that's the fix, you're welcome. 🎀

🔥 SEE ALSO 🔥

• cam(4)
• firewire(4)
• camcontrol(8)
• fwcontrol(8)
• kldload(8)
• sysctl(8)

👑 AUTHORS 👑

the sbp driver was written by Katsushi Kobayashi and Hidetoshi Shimokawa. 💜

this manual page was written by Katsushi Kobayashi.

and that's the whole page bestie!! this one's from the Debian crew, dated February 8, 2012, and it lives in section 4 (SBP(4)) — the kernel interfaces manual. slay, go plug in a FireWire drive and have fun. 💖✨🎀🦋