Messages in this thread | | | Date | Wed, 12 May 2004 21:45:42 +0300 | From | dobrev <> | Subject | Re: Linux 2.6.6 "IDE cache-flush at shutdown fixes" |
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Bartlomiej Zolnierkiewicz wrote:
>On Tuesday 11 of May 2004 18:10, dobrev wrote: > > >>Craig Bradney wrote: >> >> >>>On Tue, 2004-05-11 at 13:24, Rene Herman wrote: >>> >>> >>>>Bartlomiej Zolnierkiewicz wrote: >>>> >>>> >>>>>Rene, can you send me copies of /proc/ide/hda/identify and >>>>>/proc/ide/hdc/identify? >>>>> >>>>> >>>>Sure, attached. Quite sure you wanted hdc though? That's a DVD-ROM. >>>> >>>> >>>> >>>>>I still would like to know why these drives don't accept flush cache >>>>>commands (or it is a driver's bug?). >>>>> >>>>> >>>>No idea I'm afraid. Seems at least new Maxtor drives are affected. Both >>>>the "120P0" (120G, 8M cache) and "L0" (120G, 2M cache) were reported in >>>>this thread. >>>> >>>> >>>At a guess the 80P0 drives will also be affected (80G, 8mb cache), but >>>as yet I havent tried 2.6.6 on the boxes with them. Tonight if theres >>>time. >>> >>>Craig >>> >>> >>I have Maxtor 6Y060L0 and is also affected. Now I am with 2.6.5. >> >> > >Please see http://bugme.osdl.org/show_bug.cgi?id=2672 > >
Yes, I know.
> > >>SvrWks IDE controller also have problems with 2.6.6 because the drive >>works in mdma2 mode. >>When in 2.6.5 the transfer mode is udma2. >> >> > >UDMA2 on OSB4? Weird. > >from serverwoks.c: > > /* If we are about to put a disk into UDMA mode we screwed up. > Our code assumes we never _ever_ do this on an OSB4 */ > > if(dev->device == PCI_DEVICE_ID_SERVERWORKS_OSB4 && > drive->media == ide_disk && speed >= XFER_UDMA_0) > BUG(); > >I need more data: .config (2.6.5/2.6.6) and full dmesg output (2.6.5/2.6.6). > >
Yes, it's a OSB4. I attached files you need. .config is the same. The problem is that when in 2.6.6 hdparm reports that the drive is much slower than 2.6.5 2.6.6 => 13 MB/s 2.6.5 => 23 MB/s When I remove the code related to serverworks.c (see bellow) in patch-2.6.6 transfer is like 2.6.5.
> > >>Probably because of this (from patch-2.6.6): >>diff -Nru a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c >>--- a/drivers/ide/pci/serverworks.c Sun May 9 19:33:36 2004 >>+++ b/drivers/ide/pci/serverworks.c Sun May 9 19:33:36 2004 >>@@ -472,7 +472,9 @@ >> int dma = config_chipset_for_dma(drive); >> if ((id->field_valid & 2) && !dma) >> goto try_dma_modes; >>- } >>+ } else >>+ /* UDMA disabled by mask, try other DMA >>modes */+ goto try_dma_modes; >> } else if (id->field_valid & 2) { >> try_dma_modes: >> if ((id->dma_mword & hwif->mwdma_mask) || >> >>
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