NVME-LNVM-DIAG-SE(1)

✨ NVME-LNVM-DIAG-SE(1) — the nvme manual, but make it cute ✨

okay bestie, welcome to the NVMe Manual, section 1, and today's main character is nvme-lnvm-diag-set-bbtbl. yes the page title is a whole mouthful, but we move 💅

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🌸 NAME 🌸

nvme-lnvm-diag-set-bbtbl — literally just here to set a block state in the bad block table. that's it. that's the job. she's focused, she's iconic.

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🎀 SYNOPSIS 🎀

nvme lnvm-diag-set-bbtbl [--namespace-id=<NUM> | -n <NUM>]
                        [--channel-id=<CHID> | -c <CHID>]
                        [--lun-id=<LUNID> | -l <LUNID>]
                        [--plane-id=<PLANEID> | -p <PLANEID>]
                        [--block-id=<BLKID> | -b <BLKID>]
                        [--value=<NUM> | -v <NUM>]

look at her. all those optional flags, living her flexible life 🦋

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💖 DESCRIPTION 💖

so what we're doing here is setting the bad block table for a given channel, lun, plane and block, with value v. no cap, that's the whole vibe.

and for every block that's available, the status byte gets read like this:

• 0: Good block
• 1: Bad block
• 2: Grown bad block
• 4: Device reserved block
• 8: Host-side reserved block
• 16: Media managed reserved block

okay those numbers are lowkey doing the most (0, 1, 2, 4, 8, 16?? very powers-of-two of her ✨) but that's literally how the status byte reads, so memorize it bestie.

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💅 OPTIONS 💅

• --namespace-id=<NUM>, -n <NUM> — the namespace id you wanna use 🫶
• --channel-id, -c — the channel id
• --lun-id, -l — the LUN id
• --plane-id, -p — the plane id
• --block-id, -b — the block id

also just clocking that --value=<NUM> / -v <NUM> shows up in the synopsis up there, even though she didn't get her own lil bullet in this list. she's giving mysterious. we still love her. 🙈

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🔥 EXAMPLES 🔥

1. Set channel 0, lun 0, plane 0, block 10 to bad block value 2 (grown bad) on physical device /dev/nvme0:

# nvme lnvm-diag-set-bbtbl /dev/nvme0 -c 0 -l 0 -p 0 -b 10 -v 2

ate. no crumbs. 🍓

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👑 NVME 👑

Part of the nvme-user suite. she runs with a whole crew, iykyk 💜

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and that's the whole page, bestie!! 🌈 this lil masterpiece is from the NVMe source, dated 11/11/2021 — so if you ever need to cite her, that's the receipts. go forth and set those bad block states, you absolute icon ⭐🎀🦋