sanitize_state(9)

✨ sanitize_state(9) ✨

okay so bestie, welcome to the kernel API manual for sanitize_state 💅 this one lives in the DRBD corner of the kernel and honestly? it's giving "the cleanup crew of state transitions." no cap.

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🎀 NAME 🎀

sanitize_state — resolves implicitly necessary additional changes to a state transition 💖

like, you thought you were just doing one little state change? girl no. this function handles the extra changes that come along for the ride.

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🌸 SYNOPSIS 🌸

union drbd_state sanitize_state (struct drbd_device *device , union
drbd_state os , union drbd_state ns , enum sanitize_state_warnings *warn
);

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🦋 ARGUMENTS 🦋

• device — DRBD device. the main character of this whole operation 🫶
• os — old state. the vibe before.
• ns — new state. the vibe after.
• warn — placeholder for returned state warning. yes, it's literally a spot for the function to hand you back a warning ⚠️

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👑 DESCRIPTION 👑

When we loose connection, we have to set the state of the peers disk (pdsk) to D_UNKNOWN. and that's just the start, bestie — this rule and many more along those lines are in this function.

so lowkey, sanitize_state is the one doing the "okay but if this happens then obviously we also gotta change that" thinking. iconic behavior tbh 🔥

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/block/drbd/drbd_state.c
• cl_wide_st_chg(9)
• drbd_force_state(9)
• drbd_req_state(9)
• _drbd_request_state(9)
• is_valid_state(9)
• is_valid_soft_transition(9)
• is_valid_transition(9)
• _drbd_set_state(9)
• after_state_ch(9)

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fr fr, go read those too if you wanna understand the whole state-transition friend group 😭 this one's just the member that fixes everyone's outfits before the photo.

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and that's the whole page, bestie 🎀 brought to you by ./drivers/block/drbd, dated October 2026 — luv u, stay valid ✨💜