Ubuntu Manpage: smartpqi - Microsemi Smart Family SCSI driver

NAME

       smartpqi - Microsemi Smart Family SCSI driver

SYNOPSIS

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

DESCRIPTION

       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

FILES

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.

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

       The smarpqi driver was added in Linux 4.9.

NOTES

   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/⟩.

COLOPHON

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       project, information about reporting bugs, and the latest version of  this  page,  can  be
       found at https://www.kernel.org/doc/man-pages/.

NAME

SYNOPSIS

DESCRIPTION

FILES

VERSIONS

NOTES

SEE ALSO

COLOPHON