Messages in this thread | | | Date | Sun, 11 Jan 1998 10:43:16 +0100 | From | Pavel Machek <> | Subject | Re: devfs patch v3 |
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Hi!
> > where <H> is the host controller number, <C> is the channel number, > > <I> is the SCSI disc ID, <L> is the LUN. > > For a single partition it looks like this: > > > > sd_hHcCiIlLpP > > > > where <P> is the partition number. So, for example sd_h0c0i3l0p2 > > corresponds to sdd2 on my system. > > Wouldn't it be better to use subdirectories as much as possible? > I know it will be more difficult to implement, but will make things look > nicer, readdir faster, etc. > What about > /dev/sd/hHcCiIlL > /dev/sd/hHcCiIlLpP > /dev/pts/N > /dev/scd/hHcCiIlL /* current cdrom code doesn't use partitions */ > ...
In case of devfs, only those who are actually installed take up space in /dev. Is that still problem? (I would not like to have /dev multi-directory, because it would make manual looking for devices harder (by one or more chdirs).) Hmmmm. Thinking about sunsite. That is I believe something like 50 scsi discs, and you probably have about 2 devices per disc (h...lL and h...lLpP), that's about 100 entries, which is perfectly ok. I think that even 1000 discs would be ok (altrough not good), since entries are in RAM and readdirs are not done too much, anyway.
Pavel -- I'm really pavel@atrey.karlin.mff.cuni.cz. Pavel Look at http://atrey.karlin.mff.cuni.cz/~pavel/ ;-).
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