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 preconfigured 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"

          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,  and so on.  See
          cciss_vol_status at http://cciss.sf.net for some examples.


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

   http://cciss.sf.net,     and     Documentation/scsi/hpsa.txt      and
   Documentation/ABI/testing/sysfs-bus-pci-devices-cciss   in   the  Linux
   kernel source tree


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