On Fri, 3 Mar 2006, Steve Byan wrote:
>
> On Mar 1, 2006, at 1:42 PM, Linus Torvalds wrote:
> >
> > I wouldn't expect it to. Most people use ATA for that, and it tends to
> > have lower limits than most SCSI HBA's (well, at least the old PATA), so
> > the change - if any - should at most change some of the sg.c limits to be
> > no less than what SG_IO has had on ATA forever.
> >
> > Not that I expect people to have a SCSI CD/DVD drive anyway in this day
> > and age, so the sg.c changes probably won't show up at all.
>
> CD-ROM support is a frequently-requested feature on the iSCSI Enterprise
> Target (iet) email list. It won't be long before iSCSI CD and DVD devices
> start showing up, although the underlying hardware will be ATAPI or else
> missing entirely (i.e. ISO image file).
Yes, but the point that the ATA limits tend to be on the low side still
stands.
For example, I think the IDE driver defaults to a maximum transfer of 256
sectors, and the same number of max scatter-gather entries. Some
controllers will actually lower that, due to silly hw problems.
The point being that it has worked fine for IDE, and if a SCSI controller
has noticeably lower limits than that, there's something really strange
going on, like a real bug.
Linus
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
