lpfc_oas_lun_store(9)

💅 lpfc_oas_lun_store — Kernel API Manual bestie edition 💅

okay so this page is from the Kernel API Manual, and it's all about lpfc_oas_lun_store. It's giving kernel-attribute-store realness, and we're gonna get through every single detail together 🫶

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🎀 NAME 🎀

lpfc_oas_lun_store — Sets the OAS state for lun. periodt 💖

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✨ SYNOPSIS ✨

ssize_t lpfc_oas_lun_store (struct device *dev , struct device_attribute *attr , const char *buf , size_t count );

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🌸 ARGUMENTS 🌸

• dev — class device that is converted into a Scsi_host. yes bestie, that's the glow-up pipeline ✨
• attr — device attribute, not used. it's literally just there, lowkey chilling 🦋
• buf — buffer for passing information. the little message carrier 💌
• count — size of the formatting string. don't forget the sizing, iykyk 📏

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💖 DESCRIPTION 💖

okay so this function sets the OAS state for lun. Before this function is called, the vport wwpn, target wwpn, and oas state need to be set. that's the prep checklist, bestie — no skipping steps, no vibes-only setup 😭

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🔥 RETURN 🔥

• SUCCESS: size of formatted string.
• -EFAULT: target or vport wwpn was not set properly.
• -EPERM: oas is not enabled.
• size of formatted string. yes, it says it again — we're keeping it 100% as-is, no cap 💅

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🦋 SEE ALSO 🦋

Kernel file: ./drivers/scsi/lpfc/lpfc_attr.c

and the whole extended friend group, in order, no gatekeeping:

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_status_show(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_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)

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made with 🫶 from ./drivers/scsi/lpfc • October 2026 • all about lpfc_oas_lun_store(9) ✨