Hi folks,
I have an HP Proliant 140DL G2 server with what appears to be an IDE drive in non-DMA mode. Performance on the server is extremely bad when large amounts of disk activity is taking place.
I think the problem is that my drive is not in DMA mode:
# hdparm /dev/hda
/dev/hda: multcount = 16 (on) IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 0 (off) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) geometry = 16383/255/63, sectors = 80026361856, start = 0
...but I can't set it on:
# hdparm -d1 /dev/hda
/dev/hda: setting using_dma to 1 (on) HDIO_SET_DMA failed: Operation not permitted using_dma = 0 (off)
...which I think is because the IDE controller isn't really recognized, or is pretending to be a SATA controller:
# lspci -v | less 00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA Controller (rev 02) (prog-if 8a [Master SecP PriP]) Subsystem: Hewlett-Packard Company: Unknown device 3208 Flags: bus master, 66Mhz, medium devsel, latency 0, IRQ 193 I/O ports at <unassigned> I/O ports at <unassigned> I/O ports at <unassigned> I/O ports at <unassigned> I/O ports at 1470 [size=16]
All the google hits I've seen so far imply I have to build a kernel module but I'd rather not get into the business of rolling my own kernel if I don't have to.
I spun through the HP support page for this box/OS combo, and I don't see any SATA/IDE/ATA drivers, only SCSI/SAS drivers.
So before I continue on, can I get a sanity check here -- am I barking up the right tree?
On Mon, Jun 2, 2008 at 6:22 PM, David Mackintosh David.Mackintosh@xdroop.com wrote:
...which I think is because the IDE controller isn't really recognized, or is pretending to be a SATA controller:
For my cruiosity, what is your current kernel version?
On Mon, Jun 02, 2008 at 06:27:55PM +0300, Linux wrote:
For my cruiosity, what is your current kernel version?
# uname -a Linux stargate3 2.6.9-67.0.15.EL #1 Thu May 8 10:39:19 EDT 2008 i686 i686 i386 GNU/Linux
yum check-update doesn't show any available kernels, so I presume I'm current.
David Mackintosh wrote:
Hi folks,
I have an HP Proliant 140DL G2 server with what appears to be an IDE drive in non-DMA mode. Performance on the server is extremely bad when large amounts of disk activity is taking place.
I think the problem is that my drive is not in DMA mode:
# hdparm /dev/hda
This should be /dev/sda and not /dev/hda which means you're most likely using the generic-ide driver and not ata-piix.
Google suggests booting with ide0=noprobe ide1=noprobe to make sure the ata-piix driver is used. If you don't want to reinstall then make sure initrd contains the ata-piix driver and that references to /dev/hd* are replaced with /dev/sd* in fstab etc.
-tgc
On Tuesday 03 June 2008 10:17, Tom G. Christensen wrote:
David Mackintosh wrote:
Hi folks,
I have an HP Proliant 140DL G2 server with what appears to be an IDE drive in non-DMA mode. Performance on the server is extremely bad when large amounts of disk activity is taking place.
I think the problem is that my drive is not in DMA mode:
# hdparm /dev/hda
This should be /dev/sda and not /dev/hda which means you're most likely using the generic-ide driver and not ata-piix.
Google suggests booting with ide0=noprobe ide1=noprobe to make sure the ata-piix driver is used. If you don't want to reinstall then make sure initrd contains the ata-piix driver and that references to /dev/hd* are replaced with /dev/sd* in fstab etc.
-tgc
Timing is everything !
I found the exact same problem on a HP Proliant ML110 at the exact time I read this. Adding the ide0=noprobe to grub.conf instantly solved the problem. fstab picked it up itself without any changes and the disks now show up as sda. The 'hdparm -t <disk> went from 3.6 MB/s with /devhda to 76MB/s with /dev/sda.
This would be a good one for the wiki. (or maybe it's already there, didn't check)
So thanks Tom for you answer. Greatly apreciated (here also).
Regards,
Paul Schoonderwoerd Pollux IT
On Tue, Jun 03, 2008 at 10:17:14AM +0200, Tom G. Christensen wrote:
Google suggests booting with ide0=noprobe ide1=noprobe to make sure the ata-piix driver is used. If you don't want to reinstall then make sure initrd contains the ata-piix driver and that references to /dev/hd* are replaced with /dev/sd* in fstab etc.
Hi Tom,
I can also confirm that this works, thank you for the assistance.
Can I ask what you used as your google query? I think I missed something obvious.
David Mackintosh wrote:
On Tue, Jun 03, 2008 at 10:17:14AM +0200, Tom G. Christensen wrote:
Google suggests booting with ide0=noprobe ide1=noprobe to make sure the ata-piix driver is used. If you don't want to reinstall then make sure initrd contains the ata-piix driver and that references to /dev/hd* are replaced with /dev/sd* in fstab etc.
Hi Tom,
I can also confirm that this works, thank you for the assistance.
Can I ask what you used as your google query? I think I missed something obvious.
Well I don't remember the exact query I did however I just now searched for "DL140 Linux SATA" and the third hit is to a thread on the HP ITRC forums with the suggested fix.
-tgc
-
David Mackintosh -
Linux -
Paul Schoonderwoerd -
Tom G. Christensen