SCSA1394(4D) SCSA1394(4D)


scsa1394 - SCSI to 1394 bridge driver




The scsa1394 driver is a 1394 target and an SCSA HBA driver that supports
1394 mass storage devices compliant with the Serial Bus Protocol 2
(SBP-2) specification. It supports both bus-powered and self-powered 1394
mass storage devices.

The scsa1394 nexus driver maps SCSA target driver requests to SBP-2
Operation Request Blocks (ORB's).

The scsa1394 driver creates a child device info node for each logical
unit (LUN) on the mass storage device. The standard Solaris SCSI disk
driver is attached to those nodes. Refer to sd(4D).

This driver supports multiple LUN devices and creates a separate child
device info node for each LUN. All child LUN nodes attach to sd(4D).

In previous releases, all 1394 mass storage devices were treated as
removable media devices and managed by rmformat(1) and volume management
software. In the current release, however, only mass storage devices
with a removable bit (RMB) value of 1 are removable. (The RMB is part of
the device's SCSI INQUIRY data.) See SCSI specifications T10/995D
Revision 11a, T10/1236-D Revision 20 or T10/1416-D Revision 23 for more
information. However, for backward compatibility, all 1394 mass storage
devices can still be managed by rmformat(1). With or without a volume
manager, you can mount, eject, hot remove and hot insert a 1394 mass
storage device as the following sections explain.


Mass storage devices are managed by a volume manager. Software that
manages removable media creates a device nickname that can be listed with
eject(1) or rmmount(1). A device that is not mounted automatically can be
mounted using rmmount(1) under /rmdisk/label. Note that the mount(8) and
mount(8) commands do not accept nicknames; you must use explicit device
names with these commands.

See rmmount(1) to unmount the device and eject(1) to eject the media. If
the device is ejected while it is mounted, volume management software
unmounts the device before ejecting it. It also might kill any active
applications that are accessing the device.

Volume management software is hotplug-aware and normally mounts file
systems on USB mass storage devices if the file system is recognized.
Before hot removing the USB device, use eject(1) to unmount the file

You can disable the automatic mounting and unmounting of removable
devices by inserting a entry for a removable device in /etc/vfstab. In
this entry, you must set the mount at boot field to no. See vfstab(5).

USING mount AND umount
Use mount(8) to explicitly mount the device and umount(8) to unmount the
device. Use eject(1) to eject the media. After you have explicitly
mounted a removable device, you cannot use a nickname as an argument to

Removing the storage device while it is being accessed or mounted fails
with a console warning. To hot remove the storage device from the system,
unmount the file system, then kill all applications accessing the device.
Next, hot remove the device. A storage device can be hot inserted at any


Block special file names are located in /dev/dsk. Raw file names are
located in /dev/rdsk. Input/output requests to the devices must follow
the same restrictions as those for SCSI disks. Refer to sd(4D).


Refer to cdio(4I) and dkio(4I).


Refer to sd(4D).


The device special files for the 1394 mass storage device are created
like those for a SCSI disk. Refer to sd(4D).


Block files


Raw files


Symbolic link to the character device for the media in removable
drive 0. This is a generic removable media device.


32-bit x86 ELF kernel module


64-bit x86 ELF kernel module


64-bit SPARC ELF kernel module


See attributes(7) for a description of the following attributes:

|Architecture | SPARC, x86, PCI-based systems |


cdrw(1), eject(1), rmformat(1), rmmount(1), hci1394(4D), sd(4D),
pcfs(4FS), cdio(4I), dkio(4I), scsi(5), vfstab(5), attributes(7),
cfgadm_scsi(8), fdisk(8), mount(8), umount(8)

IEEE Std 1394-1995 Standard for a High Performance Serial Bus

ANSI NCITS 325-1998 - Serial Bus Protocol 2 (SBP-2)

System Administration Guide: Devices and File Systems

SCSI Specification T10/995D Revision 11a -- March 1997

SCSI Specification T10/1236-D Revision 20 -- July 2001

SCSI Specification T10/1416-D Revision 23 -- May 2005

May 13, 2017 SCSA1394(4D)