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

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

Linux								    2012-08-05								   HPSA(4)