Messages in this thread | | | Date | Fri, 18 Jun 1999 04:08:53 -0700 | From | "H. Peter Anvin" <> | Subject | Re: UUIDs (and devfs and major/minor numbers) |
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Stephen Frost wrote: > > On Fri, 18 Jun 1999, H. Peter Anvin wrote: > > > Stephen Frost wrote: > > > > > > On Fri, 18 Jun 1999, H. Peter Anvin wrote: > > > > > > > Trivially: it's the module installer's job. (Actually, dynamic devices > > > > are bad, this one of the major reasons why.) > > > > > > dynamic devices are good, and even if they aren't, there are lots of > > > them out there, and there's going to be more. Personally what I would REALLY > > > like to see is the ability to remove/replace a scsi disk in a system while > > > the system is running. Don't know if devfs supports it (Or PC hardware in > > > general, but I think it does). > > > This would assist me greatly in keeping servers up and happy and > > > handling user requests. That ability, and raid0+1 make a powerful > > > combination for very high reliability. > > > > > > Stephen > > > > Alright, clarification: what I meant with "dynamic devices" is dynamic > > device numbers. Hotpluggable devices are obviously a good thing. > > Glad we agree. Now how do you handle hotpluggable devices (such as > scsi drives) in userspace? Need scsi compiled in the kernel for booting. > Compile it as a module as well? Whoahh... That just seems very ugly... > Notify the user space daemon that something's disappeared so it can futz > w/ /dev? Seems like an extra unneccessary step. That, and what permissions > would it be set to when gets created? Need a config file, just the same > as you'd need for devfsd. > > Stephen
Let the boot loader provide the boot-necessary modules in the form of an initrd.
-hpa
-- "The user's computer downloads the ActiveX code and simulates a 'Blue Screen' crash, a generally benign event most users are familiar with and that would not necessarily arouse suspicions." -- Security exploit description on http://www.zks.net/p3/how.asp
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