record_vdo(9)

okay bestie, welcome to record_vdo(9) from the Kernel API Manual — it’s the little page about recording the VDO state so it can be encoded in the super block. Short, sweet, very “one job and I did it” energy. ✨

🎀 NAME 🎀

record_vdo — Record the state of the VDO for encoding in the super block.

💅 SYNOPSIS 💅

void record_vdo (struct vdo *vdo );

so it’s a void function — literally nothing comes back to you — and it takes one pointer to struct vdo named vdo. periodt. 💖

🦋 ARGUMENTS 🦋

• vdo — The vdo. That’s the VDO in question, bestie. Hand it over and let record_vdo do its thing. 🫶

🌈 SEE ALSO 🌈

the whole kernel crew, no cap:

• Kernel file ./drivers/md/dm-vdo/vdo.c Introduction(9),
• vdo_initialize_device_registry_once(9),
• filter_vdos_locked(9),
• vdo_find_matching(9),
• initialize_thread_config(9),
• get_thread_name(9),
• vdo_make_thread(9),
• register_vdo(9),
• vdo_format(9),
• initialize_vdo(9),
• vdo_make(9),
• free_listeners(9),
• unregister_vdo(9),
• vdo_destroy(9),
• finish_reading_super_block(9),
• handle_super_block_read_error(9),
• vdo_load_super_block(9),
• vdo_get_backing_device(9),
• vdo_get_device_name(9),
• vdo_synchronous_flush(9),
• vdo_get_state(9),
• vdo_set_state(9),
• vdo_get_admin_state(9),
• continue_parent(9),
• handle_geometry_block_save_error(9),
• vdo_save_geometry_block(9),
• handle_super_block_save_error(9),
• vdo_save_super_block(9),
• vdo_save_components(9),
• vdo_register_read_only_listener(9),
• notify_vdo_of_read_only_mode(9),
• vdo_enable_read_only_entry(9),
• vdo_wait_until_not_entering_read_only_mode(9),
• as_notifier(9),
• finish_entering_read_only_mode(9),
• make_thread_read_only(9),
• vdo_allow_read_only_mode_entry(9),
• vdo_enter_read_only_mode(9),
• vdo_is_read_only(9),
• vdo_in_read_only_mode(9),
• vdo_in_recovery_mode(9),
• vdo_enter_recovery_mode(9),
• complete_synchronous_action(9),
• perform_synchronous_action(9),
• set_compression_callback(9),
• vdo_set_compressing(9),
• vdo_get_compressing(9),
• vdo_get_physical_blocks_allocated(9),
• vdo_get_physical_blocks_overhead(9),
• get_vdo_statistics(9),
• vdo_fetch_statistics_callback(9),
• vdo_fetch_statistics(9),
• vdo_get_callback_thread_id(9),
• vdo_dump_status(9),
• vdo_assert_on_admin_thread(9),
• vdo_assert_on_logical_zone_thread(9),
• vdo_assert_on_physical_zone_thread(9),
• vdo_get_physical_zone(9)

okay that’s the whole page, bestie — record_vdo(9) out! 💅 source/version: ./drivers/md/dm-vdo; date: October 2026. mwah 🫶✨