Jens Axboe wrote:
> On Tue, Dec 19 2006, Arjan van de Ven wrote:
>> On Tue, 2006-12-19 at 10:35 +0200, Dan Aloni wrote:
>>> Hello,
>>>
>>> scsi_execute_async() has replaced scsi_do_req() a few versions ago,
>>> but it also incurred a change of behavior. I noticed that over-queuing
>>> a SCSI devic
Jens Axboe oracle.com> writes:
>
> On Tue, Nov 21 2006, Pavel Machek wrote:
> > Hi!
> >
> > > Well, the actual question is the following,
> > > I read about HDAPS on thinkWiki. But there is no known-to-work patch for
> > > 2.6.18 and above to enable queue-freezing/harddisk parking.
> > > After
Alan Cox wrote:
@@ -1661,6 +1671,9 @@
where = ELEVATOR_INSERT_FRONT;
rq->flags |= REQ_PREEMPT;
}
+ if (action == ide_next)
+ where = ELEVATOR_INSERT_FRONT;
+
__elv_add_request(drive->queue, rq, where, 0);
ide_do_request(h
Jens Axboe wrote:
Ok, I'll give you some hints to get you started... What you really want
to do, is:
- Insert a park request at the front of the queue
- On completion callback on that request, freeze the block queue and
schedule it for unfreeze after a given time
Am attaching a first att
John W. Linville wrote:
On Fri, Aug 19, 2005 at 03:06:27PM -0400, John W. Linville wrote:
On Mon, Aug 15, 2005 at 11:11:02PM +0100, Jon Escombe wrote:
Here is a first attempt at a patch to return register data from the
libata passthrough HDIO ioctl handlers, I needed this as the ATA
Please make it "echo 1 > frozen", then userspace can do "echo 0 > frozen"
after five seconds.
What if the code to do "echo 0 > frozen" is swapped out to disk? ;)
Emergency head parker needs to be pagelocked for other reasons. You do
not want to page it from disk while your note
On Tue, Aug 16 2005, Alejandro Bonilla Beeche wrote:
If I were in your position, I would just implement this for ide (pata,
not sata) right now, since that is what you need to support (or do some
of these notebooks come with sata?). So it follows that you add an ide
Some notebooks are co
Here is a first attempt at a patch to return register data from the
libata passthrough HDIO ioctl handlers, I needed this as the ATA
'unload immediate' command returns the success in the lbal register.
This patch applies on top of 2.6.12 and Jeffs
2.6.12-git4-passthru1.patch. (Apologies, but
Here is a first attempt at a patch to return register data from the
libata passthrough HDIO ioctl handlers, I needed this as the ATA 'unload
immediate' command returns the success in the lbal register. This patch
applies on top of 2.6.12 and Jeffs 2.6.12-git4-passthru1.patch.
(Apologies, but
The HDAPS (IBM ThinkPad Hard Disk Active Protection System) project
currently has working code to read the accelerometer data, and to park
the hard disk.
However, we're going to need a way to keep the disk idle following the
park command, as any subsequent command reaching the disk may reactiv
hard drive parking was already sorted out. We have a script that does this
and works great parking the heads.
Would have to disagree with you here. Jens' ATA7 parking code is a great
start but we still have a couple of issues to address before it's usable
for this purpose. (1) it only works
Thanks to development of the driver from some nice guys, we are able to
get data from the accelerometer. There is one problem. How do we
calibrate the values that are outputed from the userspace? All PC's get
a different value, and we can't really find the best solution. What is
the scientific a
Jens Axboe wrote:
On Thu, Jul 07 2005, Shawn Starr wrote:
Model: HTS548080M9AT00 (Hitachi)
Laptop: T42.
segfault:/home/spstarr# ./a /dev/hda
head parked
Seems to park, heard it click :)
Note on that - if the util says it parked, you can be very sure that it
actually did as the drive
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