perform_grow_physical(9)

okay so bestie, welcome to the perform_grow_physical(9) page from the Kernel API Manual — this is the grow-the-physical-size-of-the-vdo moment, and it's giving very specific kernel energy ✨

💖 NAME 💖

perform_grow_physical — Grow the physical size of the vdo.

🌸 SYNOPSIS 🌸

here's the signature, copy it exactly bestie:

int perform_grow_physical (struct vdo *vdo , block_count_t
       new_physical_blocks );

🎀 ARGUMENTS 🎀

• vdo — The vdo to resize.
• new_physical_blocks — The new physical size in blocks.

🦋 CONTEXT 🦋

okay so the vibe check here is strict: this method may only be called when the vdo has been suspended, and it must not be called from a base thread. like, only then, bestie — no sneaky base-thread calls 🙈

⭐ RETURN ⭐

returns VDO_SUCCESS or an error. that's the whole mood. 💅

🔎 SEE ALSO 🔎

go peek at the kernel file ./drivers/md/dm-vdo/dm-vdo-target.c and this whole iconic squad:

• free_device_config(9)
• get_version_number(9)
• parse_bool(9)
• parse_memory(9)
• parse_slab_size(9)
• process_one_thread_config_spec(9)
• parse_one_thread_config_spec(9)
• parse_thread_config_string(9)
• process_one_key_value_pair(9)
• parse_one_key_value_pair(9)
• parse_key_value_pairs(9)
• parse_optional_arguments(9)
• handle_parse_error(9)
• parse_device_config(9)
• get_thread_id_for_phase(9)
• advance_phase(9)
• finish_operation_callback(9)
• decode_from_super_block(9)
• decode_vdo(9)
• pre_load_callback(9)
• get_bit_array_size(9)
• grow_bit_array(9)
• allocate_instance(9)
• check_may_grow_physical(9)
• grow_layout(9)
• validate_new_device_config(9)
• write_super_block_for_suspend(9)
• suspend_callback(9)
• was_new(9)
• requires_repair(9)
• get_load_type(9)
• load_callback(9)
• handle_load_error(9)
• write_super_block_for_resume(9)
• resume_callback(9)
• grow_logical_callback(9)
• handle_logical_growth_error(9)
• perform_grow_logical(9)
• copy_partition(9)
• grow_physical_callback(9)
• handle_physical_growth_error(9)
• apply_new_vdo_configuration(9)

mwah 💖 source/version: ./drivers/md/dm-vdo; date: October 2026; manual: perform_grow_physical(9). that's the page, bestie — periodt 🫶