Messages in this thread | | | Subject | Re: max request size 1024KiB by default? | From | Lee Revell <> | Date | Sat, 24 Jul 2004 18:58:02 -0400 |
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On Sat, 2004-07-24 at 07:27, Rudo Thomas wrote: > > HD info: > > /dev/hdc: > > > > Model=Maxtor 6Y160P0, FwRev=YAR41BW0, SerialNo=Y44K8TZE > > Config={ Fixed } > > RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57 > > BuffType=DualPortCache, BuffSize=7936kB, MaxMultSect=16, MultSect=16 > > CurCHS=4047/16/255, CurSects=16511760, LBA=yes, LBAsects=268435455 > > 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 > > UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 > > AdvancedPM=yes: disabled (255) WriteCache=enabled > > Drive conforms to: (null): >
Your disk controller must not support that. It looks like the default is 1024KiB or whatever the max your controller supports is:
drivers/ide/ide-disk.c:
if (drive->addressing == 1) { ide_hwif_t *hwif = HWIF(drive); int max_s = 2048;
if (max_s > hwif->rqsize) max_s = hwif->rqsize;
blk_queue_max_sectors(drive->queue, max_s); }
Lee
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