Re: A thought on multi-session cds

Eric Kasten (kasten@nscl.msu.edu)
Fri, 8 Oct 1999 10:41:40 -0400 (EDT)

> > isofs in 2.3.x (for suitable values of x, certainly >=15) has a
> > session= parameter that you should be able to pass in via mount.
> >
> > What would be even more interesting is for cdrom block devices to make
> > multiple sessions appear as partitions -- assuming people don't ever put
> > _real_ partition tables on CD-ROMs, of course.

A little playing around reveals that although 2.3.19 will take a
session=# parameter with mount (and will actually read the TOC and
get the correct specs for reading the specified session), it completely
ignores it when it comes to accessing the correct track. That is,
it gets the right session information and then mounts session 1 anyway.
What gives?

Incidently, it uses that same inode mapping scheme it does for track 1
for all other tracks. I suspect that this mapping scheme is correct for
the filesystem as long as the filesystem starts at the beginning of the
media. Not so if the filesystem starts somewhere else. An offset is
missing?

...Eric

Eric Kasten
kasten@nscl.msu.edu

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