Hi,
I'm using Intel Server Board SE7520BD2S with 3 disks, 2xSATA WDC
WD1200JD-00H (sda & sdb) and 1xATA133 Seagate ST3120026A (hda).
SATA disks seem to work fine (though they show some warnings during
tests), but I can't enable DMA on /dev/hda.
foobar ~ # hdparm -d1 /dev/hda
/dev/hda:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)
I know its common problem with motherbord drivers in kernel, but I can't
find anything what would seem to fit here.
I have CONFIG_BLK_DEV_PIIX compiled in with some other casual options.
I tried some other options too, but nothing helped.
'Intel(R) Technical Support' blow me off since they don't support Gentoo
;> (waste of time)
All disks belongs to an software RAID5 array, so the slow hda lowers
overall efficiency very much:
foobar ~ # hdparm -tT /dev/hda
/dev/hda:
Timing cached reads: 2908 MB in 2.00 seconds = 1452.04 MB/sec
Timing buffered disk reads: 12 MB in 3.53 seconds = 3.40 MB/sec
foobar ~ # hdparm -tT /dev/sda
/dev/sda:
Timing cached reads: 2976 MB in 2.00 seconds = 1486.74 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
Timing buffered disk reads: 164 MB in 3.03 seconds = 54.15 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
foobar ~ # hdparm -tT /dev/sdb
/dev/sdb:
Timing cached reads: 2948 MB in 2.00 seconds = 1472.75 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
Timing buffered disk reads: 164 MB in 3.00 seconds = 54.60 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
foobar ~ # hdparm -tT /dev/md0
/dev/md0:
Timing cached reads: 2936 MB in 2.00 seconds = 1468.22 MB/sec
Timing buffered disk reads: 12 MB in 3.45 seconds = 3.48 MB/sec
Maybe someone knows what HDIO_DRIVE_CMD means?
Maybe this will be usefull...
foobar ~ # lspci | grep IDE
0000:00:1f.2 IDE interface: Intel Corporation 82801EB (ICH5) SATA
Controller (rev 02)
I'll be very greatfull for any help.
--
Jaroslaw Kapica
--
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