Raw disk I/O
Marc H. Morin
marc at focsys.uucp
Thu Feb 15 00:31:16 AEST 1990
I am investigating using the raw disk interface to increase performance
of our application. The application is an imaging system, thus the I/O
consists of large data transfers to and from the disk.
I need to know a little more about the behaviour
of the raw disk driver (in general) for BSD systems. If it helps, I am
particularly interested in SCSI drives on Sony and Mips workstations.
1) Does file locking via fcntl() still apply ?
2) I understand the disk is viewed as one single flat-file, but does
this also mean that I must handle bad sectors within my application ?
3) Any experiences that you might have had with raw disk I/O.
Thanks for your help
Marc H. Morin Focus Automation Systems Inc.
watmath!focsys!marc Waterloo, Ontario
(519)746-4918
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