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       hpsa - HP Smart Array SCSI driver


       modprobe hpsa [ hpsa_allow_any=1 ]


       hpsa is a SCSI driver for HP Smart Array RAID controllers.

       hpsa_allow_any=1:  This  option  allows  the  driver to attempt to operate on any HP Smart
       Array hardware RAID controller, even if it is not explicitly known to  the  driver.   This
       allows  newer  hardware  to  work  with  older  drivers.   Typically this is used to allow
       installation of operating systems from media that predates the RAID controller, though  it
       may  also be used to enable hpsa to drive older controllers that would normally be handled
       by the cciss(4) driver.  These older boards have not been tested  and  are  not  supported
       with hpsa, and cciss(4) should still be used for these.

   Supported hardware
       The hpsa driver supports the following Smart Array boards:

           Smart Array P700M
           Smart Array P212
           Smart Array P410
           Smart Array P410i
           Smart Array P411
           Smart Array P812
           Smart Array P712m
           Smart Array P711m
           StorageWorks P1210m

   Configuration details
       To  configure  HP  Smart Array controllers, use the HP Array Configuration Utility (either
       hpacuxe(8) or hpacucli(8)) or the Offline ROM-based Configuration Utility (ORCA) run  from
       the Smart Array's option ROM at boot time.


   Device nodes
       Logical  drives  are  accessed  via the SCSI disk driver (sd(4)), tape drives via the SCSI
       tape driver (st(4)), and the RAID controller via the SCSI  generic  driver  (sg(4)),  with
       device nodes named /dev/sd*, /dev/st*, and /dev/sg*, respectively.

   HPSA-specific host attribute files in /sys
              This 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, etc.)  and notify the SCSI midlayer of any
              changes detected.  Normally a rescan  is  triggered  automatically  by  HP's  Array
              Configuration  Utility  (either  the  GUI  or  the command-line variety); thus, for
              logical drive changes, the user should not normally have  to  use  this  attribute.
              This  attribute may be useful when hot plugging devices like tape drives, or entire
              storage boxes containing pre-configured logical drives.

              This attribute contains the firmware version of the Smart Array.

              For example:

                  # cd /sys/class/scsi_host/host4
                  # cat firmware_revision

   HPSA-specific disk attribute files in /sys
              This attribute contains a 32 hex-digit unique ID for each logical drive.

              For example:

                  # cd /sys/class/scsi_disk/4:0:0:0/device
                  # cat unique_id

              This attribute contains the RAID level of each logical drive.

              For example:

                  # cd /sys/class/scsi_disk/4:0:0:0/device
                  # cat raid_level
                  RAID 0

              This attribute contains the 16 hex-digit (8 byte) LUN ID by which a  logical  drive
              or  physical  device can be addressed.  c:b:t:l are the controller, bus, target and
              lun of the device.

              For example:

                  # cd /sys/class/scsi_disk/4:0:0:0/device
                  # cat lunid

   Supported ioctl() operations
       For compatibility with applications written for the cciss(4) driver, many, but not all  of
       the  ioctls  supported  by the cciss(4) driver are also supported by the hpsa driver.  The
       data structures used by these ioctls  are  described  in  the  Linux  kernel  source  file

              These  three  ioctls all do exactly the same thing, which is to cause the driver to
              rescan for new devices.  This does exactly the same thing as writing to  the  hpsa-
              specific host "rescan" attribute.

              Returns PCI domain, bus, device and function and "board ID" (PCI subsystem ID).

              Returns driver version in three bytes encoded as:

                  (major_version << 16) | (minor_version << 8) |

              Allows  "BMIC"  and "CISS" commands to be passed through to the Smart Array.  These
              are used extensively by the HP Array Configuration Utility,  SNMP  storage  agents,
              etc.  See cciss_vol_status at ⟨⟩ for some examples.


       cciss(4), sd(4), st(4), cciss_vol_status(8), hpacucli(8), hpacuxe(8),

       ⟨⟩,            and            Documentation/scsi/hpsa.txt           and
       Documentation/ABI/testing/sysfs-bus-pci-devices-cciss in the Linux kernel source tree


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