[Bug 851] Rework and extend kernel-related documentation

bugzilla at linuxfromscratch.org bugzilla at linuxfromscratch.org
Sat Aug 13 05:49:46 PDT 2005


http://bugs.linuxfromscratch.org/show_bug.cgi?id=851





------- Additional Comments From matthew at linuxfromscratch.org  2005-08-13 06:49 -------
See http://sg.torque.net/sg/u_index.html:

"In the linux kernel 2.4 series most these utilities must be used with a SCSI
generic (sg) driver device name (e.g. /dev/sg0). In the lk 2.6 series almost all
of these utilities can be used with the primary device names as well (e.g.
/dev/sda, /dev/sdc0, /dev/st0 and /dev/hdd (if it is an ATAPI device)). The SCSI
generic (sg) interface still represents a cleaner interface than the primary
device names since the drivers behind primary device names have their own
policies, may interfere with error processing and in some cases run their own
state machines."

I was under the impression that using e.g. /dev/hdc would invoke/be handled by
the sg driver if it pointed to an ATAPI device.  From the above, I'm not sure
that's the case.



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