Thierry Vignaud writes:
> Richard Gooch <rgooch@xxxxxxxxxxxxxxx> writes:
>
> > > I was just surprised why my Jaz on parallel port (ppa adapter) never
> >> appears. It turned out, after desperate fight with symlinks I finally
> >> changed fstab to point to canonical name -
> >> /dev/scsi/host0/bus0/target4/lun0/part4. But these names are not handled
> >> by modules.devfs so sd_mod was never loaded.
> >>
> >> There is handling for /dev/sd/* (that I had before). But it is just a
> >> symlink and after eject it gets lost and when you try to access it again
> >> sd_mod is already loaded so nothing happens (i.e. new media is not
> >> rescanned for partition info). There is handling for /dev/discs - but,
> >> unfortunately, there is no fixed relation between physical address
> >> (host/bus/target) and disc number - they are simply numbered after they
> >> get registered so if you have several removables sometimes they get one
> >> number sometimes other. And I want to be sure I always refer to correct
> >> drive.
> >>
> >> The imediate quick'n'dirty fix was to add
> >>
> >> alias /dev/scsi*/part* /dev/sd
> >>
> >> to /etc/modules.devfs
> >>
> >> Still, it looks like a part of more general problem. I begin to think
> >> that devfsd has to treat LOOKUP for symlinks that are managed by devfsd
> >> itdelf specially. I.e. when it gets request for /dev/sd/c0b0t4l0u4 it
> >> _knows_ that it points to /dev/scsi/..../part4 so it _could_ translate
> >> it into request to that canonical name so that devfs would start
> >> partition table revalidation. Does it make sense?
> >
> > The problem with this is that it requires more code. The MKNEWCOMPAT
> > action translates from kernel names to names like /dev/sd/c0b0t0u0p1
> > but there is no code to provide the reverse operation. There hasn't
> > been a need for this. As people who watch this list know, I hate
> > adding code to devfsd unless it's absolutely necessary :-)
> >
> > However, you can easily use the regular expression matching engine to
> > translate /dev/sd/* names to /dev/scsi/* names. This is even something that
> > could be placed into a sample configuration file that I could ship with
> > devfsd. Feel free to send some sample configuration lines :-)
>
> i'll be happy to add it it you send working config :-)
>
> however, have you installed dynamics & hotplug ? they should take
> care of amovible devices.
Erm, I'm not sure if you're talking to me or to Andrej.
Regards,
Richard....
Permanent: rgooch@xxxxxxxxxxxxx
Current: rgooch@xxxxxxxxxxxxxxx
|