smartpqi(4) — Linux manual page

NAME | SYNOPSIS | DESCRIPTION | FILES | VERSIONS | NOTES | SEE ALSO | COLOPHON

SMARTPQI(4)             Linux Programmer's Manual            SMARTPQI(4)

NAME         top

       smartpqi - Microsemi Smart Family SCSI driver

SYNOPSIS         top

       modprobe smartpqi [disable_device_id_wildcards={0|1}]
                         [disable_heartbeat={0|1}]
                         [disable_ctrl_shutdown={0|1}]
                         [lockup_action={none|reboot|panic}]
                         [expose_ld_first={0|1}] [hide_vsep={0|1}]

DESCRIPTION         top

       smartpqi is a SCSI driver for Microsemi Smart Family controllers.

   Supported ioctl() operations
       For compatibility with applications written for the cciss(4) and
       hpsa(4) drivers, many, but not all of the ioctl(2) operations
       supported by the hpsa driver are also supported by the smartpqi
       driver.  The data structures used by these operations are
       described in the Linux kernel source file
       include/linux/cciss_ioctl.h.

       CCISS_DEREGDISK, CCISS_REGNEWDISK, CCISS_REGNEWD
              These operations all do exactly the same thing, which is
              to cause the driver to re-scan for new devices.  This does
              exactly the same thing as writing to the smartpqi-specific
              host rescan attribute.

       CCISS_GETPCIINFO
              This operation returns the PCI domain, bus, device, and
              function and "board ID" (PCI subsystem ID).

       CCISS_GETDRIVVER
              This operation returns the driver version in four bytes,
              encoded as:

                  (major_version << 28) | (minor_version << 24) |
                          (release << 16) | revision

       CCISS_PASSTHRU
              Allows BMIC and CISS commands to be passed through to the
              controller.

   Boot options
       disable_device_id_wildcards={0|1}
              Disables support for device ID wildcards.  The default
              value is 0.

       disable_heartbeat={0|1}
              Disables support for the controller's heartbeat check.
              This parameter is used for debugging purposes.  The
              default value is 0, leaving the controller's heartbeat
              check active.

       disable_ctrl_shutdown={0|1}
              Disables support for shutting down the controller in the
              event of a controller lockup.  The default value is 0.

       lockup_action={none|reboot|panic}
              Specifies the action the driver takes when a controller
              lockup is detected.  The default action is none.

              parameter   action
              ─────────────────────────────────────────────
              none        take controller offline only
              reboot      reboot the system
              panic       panic the system

       expose_ld_first={0|1}
              This option enables support for exposing logical devices
              to the operating system before physical devices.  The
              default value is 0.

       hide_vsep={0|1}
              This option enables disabling exposure of the virtual SEP
              to the host.  This is usually associated with direct
              attached drives.  The default value is 0.

FILES         top

   Device nodes
       Logical drives are accessed via the SCSI disk driver (sd), tape
       drives via the SCSI tape driver (st), and the RAID controller via
       the SCSI generic driver (sg), with device nodes named /dev/sd*,
       /dev/st*, and /dev/sg*, respectively.

   SmartPQI-specific host attribute files in /sys
       /sys/class/scsi_host/host*/rescan
              The host rescan attribute is a write-only attribute.
              Writing to this attribute will cause the driver to scan
              for new, changed, or removed devices (e.g., hot-plugged
              tape drives, or newly configured or deleted logical
              drives) and notify the SCSI mid-layer of any changes
              detected.  Usually this action is triggered automatically
              by configuration changes, so the user should not normally
              have to write to this file.  Doing so may be useful when
              hot-plugging devices such as tape drives or entire storage
              boxes containing pre-configured logical drives.

       /sys/class/scsi_host/host*/version
              The host version attribute is a read-only attribute.  This
              attribute contains the driver version and the controller
              firmware version.

              For example:

                  $ cat /sys/class/scsi_host/host1/version
                  driver: 1.1.2-126
                  firmware: 1.29-112

       /sys/class/scsi_host/host*/lockup_action
              The host lockup_action attribute is a read/write
              attribute.  This attribute will cause the driver to
              perform a specific action in the unlikely event that a
              controller lockup has been detected.  See OPTIONS above
              for an explanation of the lockup_action values.

       /sys/class/scsi_host/host*/driver_version
              The driver_version attribute is read-only.  This attribute
              contains the smartpqi driver version.

              For example:

                  $ cat /sys/class/scsi_host/host1/driver_version
                  1.1.2-126

       /sys/class/scsi_host/host*/firmware_version
              The firmware_version attribute is read-only.  This
              attribute contains the controller firmware version.

              For example:

                  $ cat /sys/class/scsi_host/host1/firmware_version
                  1.29-112

       /sys/class/scsi_host/host*/model
              The model attribute is read-only.  This attribute contains
              the product identification string of the controller.

              For example:

                  $ cat /sys/class/scsi_host/host1/model
                  1100-16i

       /sys/class/scsi_host/host*/serial_number
              The serial_number attribute is read-only.  This attribute
              contains the unique identification number of the
              controller.

              For example:

                  $ cat /sys/class/scsi_host/host1/serial_number
                  6A316373777

       /sys/class/scsi_host/host*/vendor
              The vendor attribute is read-only.  This attribute
              contains the vendor identification string of the
              controller.

              For example:

                  $ cat /sys/class/scsi_host/host1/vendor
                  Adaptec

   SmartPQI-specific disk attribute files in /sys
       In the file specifications below, c stands for the number of the
       appropriate SCSI controller, b is the bus number, t the target
       number, and l is the logical unit number (LUN).

       /sys/class/scsi_disk/c:b:t:l/device/raid_level
              The raid_level attribute is read-only.  This attribute
              contains the RAID level of each logical drive.

              For example:

                  $ cat /sys/class/scsi_disk/4:0:0:0/device/raid_level
                  RAID 0

       /sys/class/scsi_disk/c:b:t:l/device/sas_address
              The sas_address attribute is read-only.  This attribute
              contains the unique identifier of the disk.

              For example:

                  $ cat /sys/class/scsi_disk/1:0:3:0/device/sas_address
                  0x5001173d028543a2

       /sys/class/scsi_disk/c:b:t:l/device/ssd_smart_path_enabled
              The ssd_smart_path_enabled attribute is read-only.  This
              attribute is for ioaccel-enabled volumes.  (Ioaccel is an
              alternative driver submission path that allows the driver
              to send I/O requests directly to backend SCSI devices,
              bypassing the controller firmware.  This results in an
              increase in performance.  This method is used for HBA
              disks and for logical volumes comprised of SSDs.)
              Contains 1 if ioaccel is enabled for the volume and 0
              otherwise.

              For example:

                  $ cat /sys/class/scsi_disk/1:0:3:0/device/ssd_smart_path_enabled
                  0

VERSIONS         top

       The smartpqi driver was added in Linux 4.9.

NOTES         top

   Configuration
       To configure a Microsemi Smart Family controller, refer to the
       User Guide for the controller, which can be found by searching
       for the specific controller at ⟨https://storage.microsemi.com/⟩.

SEE ALSO         top

       cciss(4), hpsa(4), sd(4), st(4)

       Documentation/ABI/testing/sysfs-bus-pci-devices-cciss in the
       Linux kernel source tree.

COLOPHON         top

       This page is part of release 5.11 of the Linux man-pages project.
       A description of the project, information about reporting bugs,
       and the latest version of this page, can be found at
       https://www.kernel.org/doc/man-pages/.

Linux                          2021-03-22                    SMARTPQI(4)