HP-UX Reference (11i v3 07/02) - 7 Device (Special) Files, 9 General Information, Index (vol 10)

sioc_io(7) sioc_io(7)

should normally be set to zero, even when the LUN being accessed is not zero.

Use of linked commands is not supported.

Most SCSI commands with a data phase expect the data length information to be included somewhere in

the command bytes. Both the data_length ﬁeld and any cdb data length values must be correctly speciﬁed

to get correct command results.

Very large (or inﬁnite) timeout values can cause a parallel SCSI bus (potentially the entire system) to hang.

Device and/or bus reset operations can be used to regain a device’s attention when a timeout expires.

Resetting a device can cause I/O errors and/or loss of cached data. This can result in loss of data and/or

system panics.

Obtaining SCSI

INQUIRY data by use of the

SIOC_INQUIRY ioctl instead of by use of the SIOC_IO

ioctl is generally preferable since SCSI implementations on the HP-UX operating system synchronize access

of inquiry data during driver open calls.

Since communication parameters can be affected by device-speciﬁc driver capabilities, device-speciﬁc driver

use might result in communication parameter changes.

FILES

/usr/include/sys/scsi.h

/usr/include/sys/scsi_ctl.h