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NAME | SYNOPSIS | DESCRIPTION | FILES | VERSIONS | NOTES | SEE ALSO | COLOPHON |
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SMARTPQI(4) Linux Programmer's Manual SMARTPQI(4)
smartpqi - Microsemi Smart Family SCSI driver
modprobe smartpqi [disable_device_id_wildcards={0|1}]
[disable_heartbeat={0|1}]
[disable_ctrl_shutdown={0|1}]
[lockup_action={none|reboot|panic}]
smartpqi is a SCSI driver for Microsemi Smart Family controllers.
Supported ioctl() operations
For compatibility with applications written for the cciss(4) and
hpsa(4) drivers, many, but not all of the ioctl(2) operations
supported by the hpsa driver are also supported by the smartpqi
driver. The data structures used by these operations are described
in the Linux kernel source file include/linux/cciss_ioctl.h.
CCISS_DEREGDISK, CCISS_REGNEWDISK, CCISS_REGNEWD
These operations all do exactly the same thing, which is to
cause the driver to re-scan for new devices. This does
exactly the same thing as writing to the smartpqi-specific
host rescan attribute.
CCISS_GETPCIINFO
This operation Returns the PCI domain, bus, device and
function and "board ID" (PCI subsystem ID).
CCISS_GETDRIVVER
This operation returns the driver version in four bytes,
encoded as:
(major_version << 28) | (minor_version << 24) |
(release << 16) | revision
CCISS_PASSTHRU
Allows BMIC and CISS commands to be passed through to the con‐
troller.
Boot options
disable_device_id_wildcards={0|1}
Disables support for device ID wildcards. The default value
is 0.
disable_heartbeat={0|1}
Disables support for the controller's heartbeat check. This
parameter is used for debugging purposes. The default value
is 0, leaving the controller's heartbeat check active.
disable_ctrl_shutdown={0|1}
Disables support for shutting down the controller in the event
of a controller lockup. The default value is 0.
lockup_action={none|reboot|panic}
Specifies the action the driver takes when a controller lockup
is detected. The default action is none.
parameter action
─────────────────────────────────────────────
none take controller offline only
reboot reboot the system
panic panic the system
Device nodes
Logical drives are accessed via the SCSI disk driver (sd), tape
drives via the SCSI tape driver (st), and the RAID controller via the
SCSI generic driver (sg), with device nodes named /dev/sd*, /dev/st*,
and /dev/sg*, respectively.
[1mSmartPQI-specific host attribute files in /sys
/sys/class/scsi_host/host*/rescan
The host rescan attribute 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) and notify the
SCSI mid-layer of any changes detected. Usually this action
is triggered automatically by configuration changes, so the
user should not normally have to write to this file. Doing so
may be useful when hot-plugging devices such as tape drives or
entire storage boxes containing pre-configured logical drives.
/sys/class/scsi_host/host*/version
The host version attribute is a read-only attribute. This
attribute contains the driver version and the controller
firmware version.
For example:
$ cat /sys/class/scsi_host/host1/version
driver: 1.1.2-126
firmware: 1.29-112
/sys/class/scsi_host/host*/lockup_action
The host lockup_action attribute is a read/write attribute.
This attribute will cause the driver to perform a specific
action in the unlikely event that a controller lockup has been
detected. See OPTIONS above for an explanation of the
lockup_action values.
[1mSmartPQI-specific disk attribute files in /sys
In the file specifications below, c stands for the number of the
appropriate SCSI controller, b is the bus number, t the target num‐
ber, and l is the logical unit number (LUN).
/sys/class/scsi_disk/c:b:t:l/device/raid_level
The raid_level attribute is read-only. This attribute con‐
tains the RAID level of each logical drive.
For example:
$ cat /sys/class/scsi_disk/4:0:0:0/device/raid_level
RAID 0
/sys/class/scsi_disk/c:b:t:l/device/sas_address
The sas_address attribute is read-only. This attribute con‐
tains the unique identifier of the disk.
For example:
$ cat /sys/class/scsi_disk/1:0:3:0/device/sas_address
0x5001173d028543a2
/sys/class/scsi_disk/c:b:t:l/device/ssd_smart_path_enabled
The ssd_smart_path_enabled attribute is read-only. This
attribute is for ioaccel-enabled volumes. (Ioaccel is an
alternative driver submission path that allows the driver to
send I/O requests directly to backend SCSI devices, bypassing
the controller firmware. This results in an increase in per‐
formance. This method is used for HBA disks and for logical
volumes comprised of SSDs.) Contains 1 if ioaccel is enabled
for the volume and 0 otherwise.
For example:
$ cat /sys/class/scsi_disk/1:0:3:0/device/ssd_smart_path_enabled
0
The smarpqi driver was added in Linux 4.9.
Configuration
To configure a Microsemi Smart Family controller, refer to the User
Guide for the controller, which can be found by searching for the
specific controller at ⟨https://storage.microsemi.com/⟩.
cciss(4), hpsa(4), sd(4), st(4)
Documentation/ABI/testing/sysfs-bus-pci-devices-cciss in the Linux
kernel source tree.
This page is part of release 4.15 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 2017-10-19 SMARTPQI(4)
Copyright and license for this manual page
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