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.
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.
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.
cciss(4), sd(4), st(4), cciss_vol_status(8), hpacucli(8), hpacuxe(8),
⟨http://cciss.sf.net⟩, and Documentation/scsi/hpsa.txt and Documenta‐
tion/ABI/testing/sysfs-bus-pci-devices-cciss in the Linux kernel
source tree
This page is part of release 4.12 of the Linux man-pages project. A
description of the project, information about reporting bugs, and the
latest version of this page, can be found at
https://www.kernel.org/doc/man-pages/.
Linux 2012-08-05 HPSA(4)
Pages that refer to this page: cciss(4), capabilities(7)