zfcp_fsf_open_lun(9)

📦 version 7.3.1, in nixpkgs unstable

💅 zfcp_fsf_open_lun — from the zfcp_fsf_open_lun(9) kernel manual page, bestie ✨

okay so real talk, this is a kernel API page, section 9, and it's literally one function doing one iconic thing: opening a LUN. that's it. that's the whole vibe. short king energy 👑

🌸 NAME 🌸

zfcp_fsf_open_lun — open LUN 🎀

like, it opens the LUN. no cap. the name is the whole plot, iykyk.

✨ SYNOPSIS ✨

int zfcp_fsf_open_lun (struct zfcp_erp_action *erp_action );

it returns an int (spoiler: 0 if it slays, other stuff if it doesn't 😭) and it takes exactly one arg. one. singular. main character takes one pointer and one pointer only 🫶

🦋 ARGUMENTS 🦋

  • erp_action — pointer to struct zfcp_erp_action. that's the whole description, bestie, copy it exactly, it's a pointer to a struct and that's the tea 🍓

💖 RETURN 💖

  • 0 — on success 🎉 slay, periodt
  • error otherwise — any other value means it did not go well 💀

so like, vibe check your return value. 0 = good. anything else = go read the code, ngl.

🌈 SEE ALSO 🌈

okay this is the fun part, it's giving link tree but make it kernel 🔥 the page lives in the kernel file ./drivers/s390/scsi/zfcp_fsf.c and it's friends with literally everyone:

the whole squad, fr fr 💜 and yes zfcp_fsf_close_lun(9) is right there — open it up, close it down, balance, harmony, chakras aligned 🧚

heads up bestie: this page is just the index card. everything juicy about behaviour lives in ./drivers/s390/scsi/zfcp_fsf.c, so go read the source before you touch anything 👀

and that's the page!! 💅✨ brought to you by the fine folks over in ./drivers/s390/scsi, dated October 2026, under the name zfcp_fsf_open_lun(9) — mwah, stan, bye 🫶🎀

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