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NAME

       hpsa - HP Smart Array SCSI driver

SYNOPSIS

       modprobe hpsa [ hpsa_allow_any=1 ]

DESCRIPTION

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

   Options
       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.

FILES

   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
       /sys/class/scsi_host/host*/rescan
              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.

       /sys/class/scsi_host/host*/firmware_revision
              This attribute contains the firmware version of the Smart Array.

              For example:

                  # cd /sys/class/scsi_host/host4
                  # cat firmware_revision
                  7.14

   HPSA-Specific Disk Attribute Files in /sys
       /sys/class/scsi_disk/c:b:t:l/device/unique_id
              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
                  600508B1001044395355323037570F77

       /sys/class/scsi_disk/c:b:t:l/device/raid_level
              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

       /sys/class/scsi_disk/c:b:t:l/device/lunid
              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
                  0x0000004000000000

   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     kernel     source     file
       include/linux/cciss_ioctl.h.

       CCISS_DEREGDISK, CCISS_REGNEWDISK, CCISS_REGNEWD
              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.

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

       CCISS_GETDRIVVER
              Returns driver version in three bytes encoded as:

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

       CCISS_PASSTHRU, CCISS_BIG_PASSTHRU
              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 http://cciss.sf.net for some examples.

SEE ALSO

       cciss(4), sd(4), st(4), cciss_vol_status(8),  hpacucli(8),  hpacuxe(8),
       http://cciss.sf.net,    and    the    Linux    kernel    source   files
       Documentation/scsi/hpsa.txt  and   Documentation/ABI/testing/sysfs-bus-
       pci-devices-cciss

COLOPHON

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