lpfc_oas_lun_status_show(9)

💅 lpfc_oas_lun_status_show — the manual page, but make it make sense

okay so real talk, this one's from the Kernel API Manual — that's the manual name, bestie, we're in kernel-doc territory now 🫶 — and it's a sysfs show callback. Yes, another one. Yes, we're still gonna read it properly.

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✨ NAME ✨

lpfc_oas_lun_status_show — returns the status of the Optimized Access Storage (OAS) lun... and like, specifically the one that got returned by the lpfc_oas_lun_show function. That's it. That's the whole gig. It's giving "little helper that exists purely to answer one question" energy and honestly? iconic 💅

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🦋 SYNOPSIS 🦋

ssize_t lpfc_oas_lun_status_show (struct device *dev , struct
device_attribute *attr , char *buf );

three args, one return type, no cap. ssize_t is the return, and the whole thing takes a struct device *, a struct device_attribute *, and a char *. Slay ✨

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🎀 ARGUMENTS 🎀

• dev — this is the class device, and plot twist: it gets converted into a Scsi_host. so dev walks in as a device and leaves as something else entirely. main character transformation arc, honestly 🦋
• attr — the device attribute. and no, we don't use it. it's literally just here for the vibes. not me showing up to the function call and contributing nothing 😭🙈
• buf — the buffer where the info gets passed along. this is the one that actually does the work, the actual carrier of the message 💌

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👑 RETURN 👑

it returns the size of the formatted string. that's the answer. that's the whole return value. no hidden lore, no secret second meaning — the size of the formatted string, periodt 💅

lowkey obsessed with how many kernel functions are just "I return how many bytes I wrote" and everyone acts normal about it. it's fine. it's fine. ngl it's actually kind of elegant 🔥

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🌈 SEE ALSO 🌈

the kernel file we're living in is ./drivers/scsi/lpfc/lpfc_attr.c — that's home base, bestie 🏠✨

and now for the friend group. this is a big friend group. like a whole group chat with 100+ members and everybody's @-ing everybody. taking attendance fr fr:

lpfc_jedec_to_ascii(9), lpfc_drvr_version_show(9), lpfc_enable_fip_show(9), lpfc_info_show(9), lpfc_serialnum_show(9), lpfc_temp_sensor_show(9), lpfc_modeldesc_show(9), lpfc_modelname_show(9), lpfc_programtype_show(9), lpfc_vportnum_show(9), lpfc_fwrev_show(9), lpfc_hdw_show(9), lpfc_option_rom_version_show(9), lpfc_link_state_show(9), lpfc_sli4_protocol_show(9), lpfc_oas_supported_show(9), lpfc_link_state_store(9), lpfc_num_discovered_ports_show(9), lpfc_issue_lip(9), lpfc_do_offline(9), lpfc_reset_pci_bus(9), lpfc_selective_reset(9), lpfc_issue_reset(9), lpfc_sli4_pdev_status_reg_wait(9), lpfc_sli4_pdev_reg_request(9), lpfc_nport_evt_cnt_show(9), lpfc_board_mode_show(9), lpfc_board_mode_store(9), lpfc_get_hba_info(9), lpfc_max_rpi_show(9), lpfc_used_rpi_show(9), lpfc_max_xri_show(9), lpfc_used_xri_show(9), lpfc_max_vpi_show(9), lpfc_used_vpi_show(9), lpfc_npiv_info_show(9), lpfc_poll_show(9), lpfc_poll_store(9), lpfc_sriov_hw_max_virtfn_show(9), lpfc_enable_bbcr_set(9), lpfc_wwn_set(9), lpfc_oas_tgt_show(9), lpfc_oas_tgt_store(9), lpfc_oas_priority_show(9), lpfc_oas_priority_store(9), lpfc_oas_vpt_show(9), lpfc_oas_vpt_store(9), lpfc_oas_lun_state_show(9), lpfc_oas_lun_state_store(9), lpfc_oas_lun_state_set(9), lpfc_oas_lun_get_next(9), lpfc_oas_lun_state_change(9), lpfc_oas_lun_show(9), lpfc_oas_lun_store(9), lpfc_nodev_tmo_show(9), lpfc_nodev_tmo_init(9), lpfc_update_rport_devloss_tmo(9), lpfc_nodev_tmo_set(9), lpfc_devloss_tmo_set(9), lpfc_tgt_queue_depth_set(9), lpfc_restrict_login_init(9), lpfc_restrict_login_set(9), lpfc_topology_store(9), lpfc_static_vport_show(9), lpfc_link_speed_store(9), lpfc_link_speed_init(9), lpfc_aer_support_store(9), lpfc_aer_cleanup_state(9), lpfc_sriov_nr_virtfn_store(9), lpfc_request_firmware_upgrade_store(9), lpfc_request_firmware_upgrade_init(9), lpfc_force_rscn_store(9), lpfc_force_rscn_init(9), lpfc_fcp_imax_store(9), lpfc_fcp_imax_init(9), lpfc_cq_max_proc_limit_store(9), lpfc_cq_max_proc_limit_init(9), lpfc_fcp_cpu_map_show(9), lpfc_fcp_cpu_map_store(9), lpfc_fcp_cpu_map_init(9), lpfc_cpumask_irq_mode_init(9), lpfc_irq_chann_show(9), lpfc_sg_seg_cnt_show(9), lpfc_sg_seg_cnt_init(9), sysfs_ctlreg_write(9), sysfs_ctlreg_read(9), sysfs_mbox_write(9), sysfs_mbox_read(9), lpfc_alloc_sysfs_attr(9), lpfc_free_sysfs_attr(9), lpfc_get_host_symbolic_name(9), lpfc_get_host_port_id(9), lpfc_get_host_port_type(9), lpfc_get_host_port_state(9), lpfc_get_host_speed(9), lpfc_get_host_fabric_name(9), lpfc_get_stats(9), lpfc_reset_stats(9), lpfc_get_enc_info(9), lpfc_get_node_by_target(9), lpfc_get_starget_port_id(9), lpfc_get_starget_node_name(9), lpfc_get_starget_port_name(9), lpfc_set_rport_loss_tmo(9), lpfc_set_vport_symbolic_name(9), lpfc_hba_log_verbose_init(9), lpfc_get_hba_function_mode(9), lpfc_get_cfgparam(9), lpfc_nvme_mod_param_dep(9), lpfc_get_vport_cfgparam(9)

okay yes that was a lot but we got through it together 🫶 every single one accounted for, nobody left on read 💖

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🧚 signing off 🧚

source is ./drivers/scsi/lpfc, dated October 2026, and the page itself is lpfc_oas_lun_status_show(9). that's the footer, that's the wrap, and honestly? we ate. go read lpfc_oas_lun_show(9) next, it's literally right there in the list 💜✨🌸