Re: SCSI disk devices

Stephen Williams (steve@icarus.icarus.com)
Sat, 10 May 1997 09:29:42 -0700


wagle@cse.ogi.edu said:
> (1) The device HIERARCHY is reflected in the file system. This is
> kinda cool.

It is very kool, but I've done some driver work on slowaris, and their
implementation of this is extremely fragile. There are some files in the
root file system that the kernel uses to handle this, and if by a crash
those files get corrupted, your system will never bee the same.

The real win of this mechinism, though, is that the driver creates
device node by name, is the /devices filesystem, so major device number
allocation ceasing being an issue. In theory.

-- 
Steve Williams
steve@icarus.com
steve@picturel.com

"The woods are lovely, dark and deep. But I have promises to keep, And lines to code before I sleep, And lines to code before I sleep."