drbd_uuid_new_current(9)

✨ drbd_uuid_new_current(9) ✨

okay so bestie, welcome to the Kernel API Manual 💅 — this one's drbd_uuid_new_current(9), and it is literally the glow-up button for your DRBD device's UUID. section 9 energy, kernel-space only, no userland shenanigans here 🎀

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🌸 NAME 🌸

drbd_uuid_new_current — creates a new current UUID ✨

like, it makes a fresh one. a new main character UUID. obsessed.

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🦋 SYNOPSIS 🦋

void drbd_uuid_new_current (struct drbd_device *device );

no return value, it's a void situation, she just does the thing 🫶

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💖 ARGUMENTS 💖

• device — the DRBD device 🧚 that's it. that's the whole argument list. she's lowkey low-maintenance.

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🔥 DESCRIPTION 🔥

So here's the tea, bestie 🍓 — drbd_uuid_new_current creates a new current UUID, and then it rotates the old current UUID into the bitmap slot. yeah. the hand-me-down UUID goes in the bitmap slot, the shiny new one takes the throne 👑

And the vibe check on the consequences? It causes an incremental resync upon next connect 💀 which is fr fr the whole point — instead of resyncing everything from scratch like some kind of animal, DRBD can just figure out what changed. iconic behaviour, no cap.

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🌈 SEE ALSO 🌈

Kernel file ./drivers/block/drbd/drbd_main.c — that's where she lives 🏠 and here's the whole friend group:

• tl_release(9)
• _tl_restart(9)
• tl_clear(9)
• tl_abort_disk_io(9)
• drbd_thread_current_set_cpu(9)
• drbd_send_current_state(9)
• drbd_send_state(9)
• _drbd_send_ack(9)
• drbd_send_ack(9)
• drbd_md_sync(9)
• drbd_md_read(9)
• drbd_md_mark_dirty(9)
• drbd_bmio_set_n_write(9)
• drbd_bmio_clear_n_write(9)
• drbd_queue_bitmap_io(9)
• drbd_bitmap_io(9)
• drbd_wait_misc(9)

go read them. iykyk 💜

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ngl bestie, quick reminder: this is a kernel function, section 9, void return — you're not calling this from your shell, you're calling it from kernel code, and it wants a real struct drbd_device *. don't come for me if you pass it nonsense 🙈

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and that's the page!! 🎀 brought to you by ./drivers/block/drbd, dated October 2026, sitting pretty in section 9 of the Kernel API Manual — mwah, slay, periodt 💅✨👑