Messages in this thread |  | | | Date | Thu, 7 Oct 1999 14:24:12 -0500 (CDT) | | From | Greg Ingram <> | | Subject | Re: A though on multi-session cds |
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On Thu, 7 Oct 1999, Steve Dodd wrote:
> On Thu, Oct 07, 1999 at 09:59:54AM -0400, Eric Kasten wrote: > > > A thought on multi-session cds. I've been considering using CD-Writers > > as a way to create snapshots of certain types of critical data by > > writing a new track to the CD periodically (essentially creating a set > > of generation datasets on the CD). One of the down sides of this > > is that there isn't a particularily easy way (that I've located) to access > > the data tracks beyond track 01 -- ie, mount mounts track 01, but there > > isn't a way to mount a different track that also has an isofs on it. > > 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.
I once used a multisession CD-ROM (don't recall the brand) whose authoring software and device driver allowed for incremental backups. The driver would present the multisession CD-ROM as one filesystem where you only saw the most recent version of a given file. It was pretty slick.
- Greg
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