On 5/28/07, HG <[EMAIL PROTECTED]> wrote:
Hello!
On 5/27/07, Darryl Gregorash <[EMAIL PROTECTED]> wrote:
> On 2007-05-26 23:36, HG wrote:
> > Hi!
> >
> > On 5/25/07, Greg Freemyer <[EMAIL PROTECTED]> wrote:
> >> See http://linux-ata.org/driver-status.html#matrix for the Sept. 06
> >> status matrix. That should have been accurate for 10.2. Lots of big
> >>
> >> Greg
> >
> > I have just ordered a Promise SATA300 TX4plus. It was the only
> I can't find a TX4plus anywhere on the Promise website. Do you mean the
> TX4310?
That was what the shop gave as the Promise internal code. The link
they gave, points here:
http://www.promise.com/product/product_detail_eng.asp?segment=undefined&product_id=139
> > Do you know more about the status as the table leaves me a little
> > confused. The table says that the driver for above Promise does not
> > support NCQ, new EH, hotplug or suspend. But when I scrolled up, the
> > page says that: "Summary: No TCQ. Newer cards support NCQ. Full SATA
> > control including hotplug and PM on all."
> What is confusing? The card supports these, but the driver does not. The
> comment you quoted about the sata_promise driver suggests that that TCQ
> will not be supported in the driver, because there is NCQ support in the
> cards.
I do not know if NCQ and TCQ are related in that way as you say - TCQ
is something new to me and my drives do not support that (so, I wont
get it even if the software would support it). Anyways, the Promise
web-site (above) mentions that the card supports both NCQ and TCQ.
> The notes after the table say this: "No, feature is not present. The
> hardware can support this feature, but driver code does not yet exist to
> support it." Note the word "yet".
That was the one word that I missed! 8-) Sorry about that. Yes, what I
was confused about was, what the hardware supports and what the
software supports now or in the future. Now it's clear.
> In other words, stay tuned -- the support should be there sometime in
> the future. If you absolutely /must/ have all these now, then look for
> something that can use the ahci driver, or get a Silicon Image SiI3124
> (presumably, though, most if not all of those will be more expensive
> than you suggest your budget allows).
I will stay tuned. Obviously I can live without those features (I
mean, how did we store our data before NCQ and TCQ? :-) I'll stay with
the card that I have selected. After all, I want reliable 4-port
solution for home use with my own money... corporate would be
different.
So, all in all, I'm glad to know that what I selected is now supported
by OpenSUSE. And in the future, I might even get better performance.
Thanks!
--
H
Over the last 6 months (ie. since Sept. 06), the Promise Libata driver
has received a significant amount of love and attention. I don't know
the details, but in 2.6.21 and newer kernels I'm almost positive it is
using the new EH. And I think the NCQ & TCQ functionality is in there
as well.
If your really curious, check the 2.6.19, 2.6.20, & 2.6.21 changelogs
at http://www.kernel.org/pub/linux/kernel/v2.6/ for major
improvements. For recent minor bug fixes in the 2.6.21 series check
changelogs for 2.6.21.1, 2.6.21.2 , 2.6.21.3.
If you find that there is is new functionality available not in the
stock OpenSuse 10.2 kernels (2.6.18 based iirc), you might want to
consider using one of the Factory kernels. They are less tested, but
likely will work fine in non-production environment.
FYI: If you do go through the changelogs, I'd be curious what you find
so post a summary back to the list if you don't mind.
Greg
--
Greg Freemyer
The Norcross Group
Forensics for the 21st Century
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