| NAME | SYNOPSIS | DESCRIPTION | FILES | SEE ALSO | COLOPHON | The Linux Programming Interface |
HPSA(4) Linux Programmer's Manual HPSA(4)
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.
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
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.
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.
/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
/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
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.
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
This page is part of release 3.41 of the Linux man-pages project. A
description of the project, and information about reporting bugs, can be
found at http://www.kernel.org/doc/man-pages/.
Linux 2011-09-21 HPSA(4)
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The Linux Programming Interface,
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