raid6_recov_2data(9)

🌸 raid6_recov_2data(9) 🌸

okay bestie, so this is a page straight outta the Kernel API Manual and it's genuinely iconic — it's the little function that could when two of your data disks ghost you at the same time 😭💅 no cap, this is the recovery glow-up you didn't know you needed.

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✨ NAME ✨

raid6_recov_2data — recover two missing data disks 🫶 (yes, two. two entire disks. main character energy fr fr)

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✨ SYNOPSIS ✨

void raid6_recov_2data (int disks , size_t bytes , int faila , int failb
, void **ptrs );

like, look at that signature. obsessed. 🔥

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✨ ARGUMENTS ✨

• disks — the number of "disks" we're operating on, and yes that count includes the parity ones 💖 (it's giving "everyone's invited to the party")
• bytes — how long each vector is, in bytes 🎀
• faila — index of the first failed data disk 🙈
• failb — index of the second failed data disk 🙈🙈
• ptrs — a disks-sized array of memory pointers 🦋

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✨ DESCRIPTION ✨

so here's the vibe: this bad boy rebuilds bytes worth of missing data into ptrs[faila] and ptrs[failb], pulling from the data still chilling in the remaining disks and from the two parities pointed to by the other indices between 0 and disks - 1 in ptrs. 🌈

disks counts both the data disks and the two parities — don't forget that part, it's lowkey important 💀

and bestie, listen: faila must be smaller than failb. that's not a suggestion, that's the law 👑 (well, it's the spec. same thing.)

🚨 the memory pointed to by each pointer in ptrs must be page aligned and is limited to PAGE_SIZE. no exceptions, no "but just this once". this is a hard vibe check and if you fail it, bad things happen. periodt. 💅✨

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✨ SEE ALSO ✨

• Kernel file ./lib/raid/raid6/algos.c
• raid6_gen_syndrome(9)
• raid6_xor_syndrome(9)
• raid6_recov_datap(9)

go read those too, they're the friend group and they all ate 💖🍓

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and that's the whole page, bestie!! this one lives in ./lib/raid/raid6 and it was blessed upon us in October 2026 — truly a moment 🧚‍♀️💜 so go forth, recover those two disks, and slay ✨👑💅