22.4. Storage parameters Table 22.1. Storage Module Parameters Hardware Module Parameters 3ware Storage Controller and 9000 series 3w-xxxx.ko, 3w-9xxx.ko Adaptec Advanced Raid Products, Dell PERC2, 2/Si, 3/Si, 3/Di, HP NetRAID-4M, IBM ServeRAID, and ICP SCSI driver aacraid.ko nondasd - Control scanning of hba for nondasd devices. 0=off, 1=on dacmode - Control whether dma addressing is using 64 bit DAC. 0=off, 1=on commit - Control whether a COMMIT_CONFIG is issued to the adapter for foreign arrays. This is typically needed in systems that do not have a BIOS. 0=off, 1=on startup_timeout - The duration of time in seconds to wait for adapter to have it's kernel up and running. This is typically adjusted for large systems that do not have a BIOS aif_timeout - The duration of time in seconds to wait for applications to pick up AIFs before deregistering them. This is typically adjusted for heavily burdened systems. numacb - Request a limit to the number of adapter control blocks (FIB) allocated. Valid values are 512 and down. Default is to use suggestion from Firmware. acbsize - Request a specific adapter control block (FIB) size. Valid values are 512, 2048, 4096 and 8192. Default is to use suggestion from Firmware. Adaptec 28xx, R9xx, 39xx AHA-284x, AHA-29xx, AHA-394x, AHA-398x, AHA-274x, AHA-274xT, AHA-2842, AHA-2910B, AHA-2920C, AHA-2930/U/U2, AHA-2940/W/U/UW/AU/, U2W/U2/U2B/, U2BOEM, AHA-2944D/WD/UD/UWD, AHA-2950U2/W/B, AHA-3940/U/W/UW/, AUW/U2W/U2B, AHA-3950U2D, AHA-3985/U/W/UW, AIC-777x, AIC-785x, AIC-786x, AIC-787x, AIC-788x , AIC-789x, AIC-3860 aic7xxx.ko verbose - Enable verbose/diagnostic logging allow_memio - Allow device registers to be memory mapped debug - Bitmask of debug values to enable no_probe - Toggle EISA/VLB controller probing probe_eisa_vl - Toggle EISA/VLB controller probing no_reset - Supress initial bus resets extended - Enable extended geometry on all controllers periodic_otag - Send an ordered tagged transaction periodically to prevent tag starvation. This may be required by some older disk drives or RAID arrays. tag_info:<tag_str> - Set per-target tag depth global_tag_depth:<int> - Global tag depth for every target on every bus seltime:<int> - Selection Timeout (0/256ms,1/128ms,2/64ms,3/32ms) IBM ServeRAID ips.ko LSI Logic MegaRAID Mailbox Driver megaraid_mbox.ko unconf_disks - Set to expose unconfigured disks to kernel (default=0) busy_wait - Max wait for mailbox in microseconds if busy (default=10) max_sectors - Maximum number of sectors per IO command (default=128) cmd_per_lun - Maximum number of commands per logical unit (default=64) fast_load - Faster loading of the driver, skips physical devices! (default=0) debug_level - Debug level for driver (default=0) Emulex LightPulse Fibre Channel SCSI driver lpfc.ko lpfc_poll - FCP ring polling mode control: 0 - none, 1 - poll with interrupts enabled 3 - poll and disable FCP ring interrupts lpfc_log_verbose - Verbose logging bit-mask lpfc_lun_queue_depth - Max number of FCP commands we can queue to a specific LUN lpfc_hba_queue_depth - Max number of FCP commands we can queue to a lpfc HBA lpfc_scan_down - Start scanning for devices from highest ALPA to lowest lpfc_nodev_tmo - Seconds driver will hold I/O waiting for a device to come back lpfc_topology - Select Fibre Channel topology lpfc_link_speed - Select link speed lpfc_fcp_class - Select Fibre Channel class of service for FCP sequences lpfc_use_adisc - Use ADISC on rediscovery to authenticate FCP devices lpfc_ack0 - Enable ACK0 support lpfc_cr_delay - A count of milliseconds after which an interrupt response is generated lpfc_cr_count - A count of I/O completions after which an interrupt response is generated lpfc_multi_ring_support - Determines number of primary SLI rings to spread IOCB entries across lpfc_fdmi_on - Enable FDMI support lpfc_discovery_threads - Maximum number of ELS commands during discovery lpfc_max_luns - Maximum allowed LUN lpfc_poll_tmo - Milliseconds driver will wait between polling FCP ring HP Smart Array cciss.ko LSI Logic MPT Fusion mptbase.ko mptctl.ko mptfc.ko mptlan.ko mptsas.ko mptscsih.ko mptspi.ko mpt_msi_enable - MSI Support Enable mptfc_dev_loss_tmo - Initial time the driver programs the transport to wait for an rport to return following a device loss event. mpt_pt_clear - Clear persistency table mpt_saf_te - Force enabling SEP Processor QLogic Fibre Channel Driver qla2xxx.ko ql2xlogintimeout - Login timeout value in seconds. qlport_down_retry - Maximum number of command retries to a port that returns a PORT-DOWN status ql2xplogiabsentdevice - Option to enable PLOGI to devices that are not present after a Fabric scan. ql2xloginretrycount - Specify an alternate value for the NVRAM login retry count. ql2xallocfwdump - Option to enable allocation of memory for a firmware dump during HBA initialization. Default is 1 - allocate memory. extended_error_logging - Option to enable extended error logging. ql2xfdmienable - Enables FDMI registratons. NCR, Symbios and LSI 8xx and 1010 sym53c8xx cmd_per_lun - The maximum number of tags to use by default tag_ctrl - More detailed control over tags per LUN burst - Maximum burst. 0 to disable, 255 to read from registers led - Set to 1 to enable LED support diff - 0 for no differential mode, 1 for BIOS, 2 for always, 3 for not GPIO3 irqm - 0 for open drain, 1 to leave alone, 2 for totem pole buschk - 0 to not check, 1 for detach on error, 2 for warn on error hostid - The SCSI ID to use for the host adapters verb - 0 for minimal verbosity, 1 for normal, 2 for excessive debug - Set bits to enable debugging settle - Settle delay in seconds. Default 3 nvram - Option currently not used excl - List ioport addresses here to prevent controllers from being attached safe - Set other settings to a "safe mode"

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