Problem s diskem: DMA disabled

[Stepan Roh]

Mam takovy mensi problem s diskem v Linuxu. Obcas kernel do syslogu pise:

kernel: hdc: timeout waiting for DMA
kernel: hdc: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }

A nakonec napise:

kernel: hdc: status timeout: status=0xd1 { Busy }
kernel: hdc: DMA disabled
kernel: hdc: drive not ready for command
kernel: ide1: reset: success

Tedy to shodi DMA. Ten disk je uplne novy. Na druhem disku to nedela.
Nechci experimentovat s novym jadrem, protoze co funguje do toho nevrtej,
ze :-) Navic ten stroj je v permanentnim provozu.

Setkal se s tim uz nekdo? Hledal jsem v archivu, ale nic zajimaveho jsem
nenasel.

kernel 2.2.16
chipset Intel 430VX Triton III

$ hdparm /dev/hda

/dev/hda:
 multcount    =  0 (off)
 I/O support  =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  1 (on)
 keepsettings =  0 (off)
 nowerr       =  0 (off)
 readonly     =  0 (off)
 readahead    =  8 (on)
 geometry     = 969/128/63, sectors = 7814016, start = 0

$ hdparm -i /dev/hda

/dev/hda:

 Model=WDC AC34000L, FwRev=32.41N37, SerialNo=WD-WT3510909973
 Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq
}
 RawCHS=7752/16/63, TrkSize=57600, SectSize=600, ECCbytes=22
 BuffType=DualPortCache, BuffSize=256kB, MaxMultSect=16, MultSect=off
 CurCHS=7752/16/63, CurSects=7814016, LBA=yes, LBAsects=7814016
 IORDY=on/off, tPIO={min:160,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes: pio0 pio1 pio2 pio3 pio4
 DMA modes: mdma0 mdma1 *mdma2 udma0 udma1 udma2

$ hdparm /dev/hdc

/dev/hdc:
 multcount    =  0 (off)
 I/O support  =  0 (default 16-bit)
 unmaskirq    =  0 (off)
 using_dma    =  0 (off)
 keepsettings =  0 (off)
 nowerr       =  0 (off)
 readonly     =  0 (off)
 readahead    =  8 (on)
 geometry     = 2491/255/63, sectors = 40020624, start = 0

$ hdparm -i /dev/hdc

/dev/hdc:

 Model=Maxtor 2B020H1, FwRev=WAH21PB0, SerialNo=B1CZXTME
 Config={ Fixed }
 RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
 BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=off
 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=40020624
 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
 PIO modes: pio0 pio1 pio2 pio3 pio4
 DMA modes: mdma0 mdma1 *mdma2 udma0 udma1 udma2 udma3 udma4 udma5

S pozdravem,

Stepan Roh