Andre/LKML,
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. The
adapter driver does correctly report devices to user space, but
is not properly reflecting these devices in the gendisk_head,
which makes it rather hard for kernel level drivers to scan
and determine which devices are attached to the controller.
I attempted to correct this in the code, but found that these
changes are a very significant effort to get working.
Please advise.
Jeff
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.
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.
:-)
Jeff
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?
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.
Jeff
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
--
Jens Axboe
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