NVME_INIT_SET_FEATURES_PERSONALITY-LIBNVME3(2)

📦 version 3.2, in arch rolling

💅 nvme_init_set_features_personality — ok bestie let's talk libnvme ✨

So this is a page from the libnvme API manual, and it's about one very specific little function: nvme_init_set_features_personality. She's the one who sets up your passthru command for Configurable Device Personality. Yes, that's a real feature name. Yes, it's iconic. 🎀

✨ NAME ✨

nvme_init_set_features_personality — Initialize passthru command for Configurable Device Personality

Like, that's literally her whole job. She initializes the passthru command. For the Configurable Device Personality feature. Slay. 💅

🌸 SYNOPSIS 🌸

void nvme_init_set_features_personality (struct libnvme_passthru_cmd
*cmd , bool sv , __u8 perid , bool chps , bool perfs , __u32 cdw11 ,
void *data , __u32 len );

Nine things go in, nothing comes out (void, she's not about that return-value life), and honestly the signature is giving "long but worth it." 🦋

🫶 ARGUMENTS 🫶

Okay so here's the whole cast of characters, and every single one matters, no cap:

  • cmd — the Passthru command to use. This is the buffer she's about to fill in, bestie. She's not making a new one, she's working with what you gave her. 🙈
  • sv — Save value across power states. A bool. Do you want this setting to survive a power state change? That's the question. 🔥
  • perid — the Personality Identifier (PERID), a __u8. For the actual values, go look at enum nvme_personality_identifier — she's not gonna list them here, that's a whole other page. ✨
  • chps — Change Personality Settings (CHPS), a bool. Literally does what it says on the tin. 💅
  • perfs — Personality Freeze State (PERFS), also a bool. Freeze that state, queen. 🧊
  • cdw11 — Personality Identifier specific Command Dword 11 value, a __u32. Yes it's very specific. Yes it's very much a Command Dword 11 thing. iykyk. 👑
  • data — the Personality Identifier specific data buffer — or NULL if the personality doesn't use the data buffer. So like, NULL is a valid vibe here, don't panic. 🌈
  • len — Length of data, a __u32. Goes with data. Obviously. 💖

🦋 DESCRIPTION 🦋

She initializes the passthru command buffer for the Set Features command, with the FID value set to NVME_FEAT_FID_CONF_DEV_PERSONALITY. That's it. That's the whole bit. She's the setup girlie, not the execute girlie. 💀

Ngl the whole thing is literally just "fill in this passthru command struct so the kernel knows what you're asking for." No hidden lore. No plot twist. Just a very well-dressed initializer. 🎀

Signed, sealed, delivered: this page is from the libnvme API manual, dated October 2026. Go forth and initialize your passthru commands, bestie — mwah 💜🌷✨

📦 where this page comes from