Re: 3-Ware Raid driver fails to update GenDisk head

["Jeff V. Merkey" <jmerkey@vger.timpanogas.org>]

On Tue, Apr 24, 2001 at 12:45:35AM +0200, Jens Axboe wrote:
> On Mon, Apr 23 2001, Jeff V. Merkey wrote:
> > On Mon, Apr 23, 2001 at 11:13:12PM +0200, Guest section DW wrote:
> > > On Mon, Apr 23, 2001 at 01:55:00PM -0600, Jeff V. Merkey wrote:
> > > > On Mon, Apr 23, 2001 at 09:47:01PM +0200, Guest section DW wrote:
> > > > > On Mon, Apr 23, 2001 at 12:08:52PM -0600, Jeff V. Merkey wrote:
> > > > > > 
> > > > > > I am still working on this, but would appreciate some help from
> > > > > > whomever owns this driver proper.  I have discovered that the 
> > > > > > 3Ware drivers are not updating the gendisk_head with devices
> > > > > > reported and exposed to user space as /dev/sda, sdb, etc.
> > > > > 
> > > > > But that is the job of sd.c, not of a driver.
> > > > 
> > > > These drivers are an IDE driver that simulates a SCSI interface.  It 
> > > > reported IDE devices as SCSI handles, so there's some holes.  I guess
> > > > you were not aware of this, or you would have known that standard sd.c
> > > > is not working.
> > > 
> > > Just like ide-scsi.c you mean?
> > 
> > No.  They're not that clean and well organized, though they are rather 
> > clever adapters and are pretty cool.
> 
> Come on Jeff, what Andries is saying is that it _works_ like ide-scsi.
> It registers itself as a SCSI hba like a "regular" SCSI card, hence it
> uses the SCSI infrastructure -- alas, disks driven by sd.c

OK, OK.  I get it.  Sorry for the digs ....

:-)

Jeff


> 
> -- 
> Jens Axboe