Robert Hancock wrote:
If this is a Seagate, I believe that they don't have AAM enabled on
any of their newer drives (something about a lawsuit for patent
infringement on that feature, or something). Quite likely they don't
support that power management command, either.
--
Do you have a
Linda Walsh:
Seagate would
remove those features -- especially since they are mentioned on
Seagate's drive
information page as being supported features.
Since you're there ... you might want to download `Seagate's SeaTools'
and (if) give the hdd's controller a try ... ;)
--
Esenlikle
On Sun, 06 Jan 2008 12:25:10 -0800
Linda Walsh [EMAIL PROTECTED] wrote:
Robert Hancock wrote:
If this is a Seagate, I believe that they don't have AAM enabled on
any of their newer drives (something about a lawsuit for patent
infringement on that feature, or something). Quite likely
Linda Walsh writes:
Robert Hancock wrote:
Linda Walsh wrote:
Alan Cox wrote:
rate began falling; at 128k block-reads-at-a-time or larger, it
drops below
20MB/s (only on buffered SATA).
Try disabling NCQ - see if you've got a drive with the 'NCQ = no
readahead' flaw.
I got my Promise card and everything is up and running without problems,
using kernel 2.6.24-rc6 and the sata_promise driver out of the box:
00:0c.0 Mass storage controller: Promise Technology, Inc. PDC40775 (SATA 300
TX2plus) (rev 02)
Subsystem: Promise Technology, Inc. PDC40775 (SATA
Linda Walsh wrote:
Robert Hancock wrote:
Linda Walsh wrote:
Alan Cox wrote:
rate began falling; at 128k block-reads-at-a-time or larger, it
drops below
20MB/s (only on buffered SATA).
Try disabling NCQ - see if you've got a drive with the 'NCQ = no
readahead' flaw.
Robert Hancock wrote:
Looks like the drive reports ERR/ABRT (command aborted), meaning it
likely doesn't support those commands.
---
Except the PATA version of the drive does (same capacity, other
specs). Seagate would
disable advanced features for SATA but leave them for the older
Linda Walsh wrote:
Robert Hancock wrote:
Looks like the drive reports ERR/ABRT (command aborted), meaning it
likely doesn't support those commands.
---
Except the PATA version of the drive does (same capacity, other
specs). Seagate would
disable advanced features for SATA but leave
Holger Hoffstaette wrote:
Another new problem (not as important) -- even though SATA disks are
called with sdX, my ATA disks that *were* at hda-hdc are now at hde-hdg.
Devices hda-hdd are not populated in my dev directory on bootup. Of
I think this is because the Promise SATA card
Alan Cox wrote:
rate began falling; at 128k block-reads-at-a-time or larger, it drops below
20MB/s (only on buffered SATA).
Try disabling NCQ - see if you've got a drive with the 'NCQ = no
readahead' flaw.
---
I'm not aware, off hand, how to disable NCQ. I haven't had any
NCQ- or SATA-
Linda Walsh wrote:
Alan Cox wrote:
rate began falling; at 128k block-reads-at-a-time or larger, it drops
below
20MB/s (only on buffered SATA).
Try disabling NCQ - see if you've got a drive with the 'NCQ = no
readahead' flaw.
---
I'm not aware, off hand, how to disable NCQ. I haven't had
Robert Hancock wrote:
Linda Walsh wrote:
Alan Cox wrote:
rate began falling; at 128k block-reads-at-a-time or larger, it
drops below
20MB/s (only on buffered SATA).
Try disabling NCQ - see if you've got a drive with the 'NCQ = no
readahead' flaw.
http://linux-ata.org/faq.html#ncq
---
I wanted to use the newer pata support in the SATA lib, but
got frustrated real fast by the lack of disk-parameter support
in the new pata library (hdparm is mostly broken; and the SCSI
utils aren't really intended for ATA(or SATA?) disks using the
SCSI interface.
...
Most hdparm flags work
Linda Walsh wrote:
Robert Hancock wrote:
Have you tried using a different block size to see how that effects
the results? There might be some funny interaction there.
There is some interaction with the large block size (but only on the
SATA
disk). Counts were adjusted to keep the
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