ubi_create_volume(9)

✨ ubi_create_volume 💅

okay so bestie, welcome to ubi_create_volume(9) from the Kernel API Manual — like, the kernel's own group chat for making volumes. let's get into it 🎀

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🌸 NAME 🌸

ubi_create_volume — create volume. that's it, that's the vibe ✨

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🦋 SYNOPSIS 🦋

int ubi_create_volume (struct ubi_device *ubi , struct ubi_mkvol_req
*req );

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💖 ARGUMENTS 💖

• ubi — the UBI device description object, aka the whole device's main character energy 👑
• req — the volume creation request, like the lil form you gotta fill out to ask for a new volume 🍓

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🔥 DESCRIPTION 🔥

so this function creates the volume that's described by req. literally what it says on the tin 💅

here's the tea: if req->vol_id is UBI_VOL_NUM_AUTO, this function will automatically assign an ID to the new volume and save it right back into req->vol_id. so you don't gotta pick a number yourself, it handles that for you, slay 🙈

it returns zero in case of success and a negative error code in case of failure — so zero is the good ending, negative means something went sideways 😭

⚠️ important caveat, no cap: the caller has to have the ubi->device_mutex locked. like, that's not optional, bestie. lock it before you call this or it's giving undefined chaos 💀

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🌈 SEE ALSO 🌈

kernel file ./drivers/mtd/ubi/vmt.c, plus these iconic neighbours:

• ubi_remove_volume(9)
• ubi_resize_volume(9)
• ubi_rename_volumes(9)
• ubi_add_volume(9)
• ubi_free_volume(9)
• self_check_volume(9)
• self_check_volumes(9)

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and that's the whole page, periodt 🫶 this one came from ./drivers/mtd/ubi, dated October 2026 — ty for coming to my ted talk, mwah 💜🧚⭐