Re: Different geometry settings for identical drives

["Jeffrey W. Baker" <jwbaker@acm.org>]

On Fri, 2003-05-30 at 16:20, Petr Vandrovec wrote:
> On 30 May 03 at 15:46, Jeffrey Baker wrote:
> 
> > hda: host protected area => 1
> > hda: setmax LBA 234441648, native  234375000
> > hda: 234375000 sectors (120000 MB) w/8192KiB Cache, CHS=232514/16/63, UDMA(100)
> > hdc: attached ide-disk driver.
> > hdc: host protected area => 1
> > hdc: setmax LBA 234441648, native  234375000
> > hdc: 234375000 sectors (120000 MB) w/8192KiB Cache, CHS=232514/16/63, UDMA(100)
> > hdd: attached ide-cdrom driver.
> > hdd: ATAPI 24X CD-ROM drive, 128kB Cache, UDMA(33)
> > 
> > The result is that hda works fine but hdc doesn't.  When I try to mke2fs
> > on the latter I see:
> > 
> > hdc: dma_intr: status=0x51 { DriveReady SeekComplete Error }
> > hdc: dma_intr: error=0x10 { SectorIdNotFound }, LBAsect=234441583, sector=232343808
> > 
> > You can see that LBAsect (234441583) is higher than the "native" sectors
> > quoted by the kernel (234375000, difference 66583 sectors).  Why are
> > these two disks being addressed differently?  
> 
> As far as I can tell, it has nothing to do with disk geometry.
> 
> Someone just cut couple of sectors at the end from disk, you compiled
> your kernel without CONFIG_IDEDISK_STROKE, but still kernel for some
> reason reports block size as if idedisk_set_max_address() was invoked.
> 
> I do not see how this could happen with 2.4.21-rc3... Can you recheck
> that you are using 2.4.21-rc3 without any additional patches?

I'm running 2.4.21-rc3 with the latest patch from ftp.x86-64.org:

prime:/usr/src# uname -r
2.4.21-rc3

The x86-64.org patch doesn't touch much outside of arch/x86_64.  You are
right that CONFIG_IDE_STROKE is off:

prime:/usr/src/linux# grep IDE .config | sort | tac  
CONFIG_IDEDMA_PCI_AUTO=y
CONFIG_IDEDMA_AUTO=y
CONFIG_IDE=y
CONFIG_BLK_DEV_IDE_MODES=y
CONFIG_BLK_DEV_IDEPCI=y
CONFIG_BLK_DEV_IDEFLOPPY=y
CONFIG_BLK_DEV_IDEDMA_PCI=y
CONFIG_BLK_DEV_IDEDMA=y
CONFIG_BLK_DEV_IDEDISK=y
CONFIG_BLK_DEV_IDECD=y
CONFIG_BLK_DEV_IDE=y
# IDE, ATA and ATAPI Block devices
# CONFIG_VIDEO_SELECT is not set
# CONFIG_VIDEO_DEV is not set
# CONFIG_PARIDE is not set
# CONFIG_IDE_TASK_IOCTL is not set
# CONFIG_IDE_CHIPSETS is not set
# CONFIG_IDEPCI_SHARE_IRQ is not set
# CONFIG_IDEDMA_PCI_WIP is not set
# CONFIG_IDEDMA_ONLYDISK is not set
# CONFIG_IDEDMA_IVB is not set
# CONFIG_IDEDISK_STROKE is not set
# CONFIG_IDEDISK_MULTI_MODE is not set
# CONFIG_BLK_DEV_IDETAPE is not set
# CONFIG_BLK_DEV_IDESCSI is not set
# CONFIG_BLK_DEV_IDEDMA_FORCED is not set
# CONFIG_BLK_DEV_IDECS is not set
# CONFIG_BLK_DEV_HD_IDE is not set
# CONFIG_AMD74XX_OVERRIDE is not set
# ATA/IDE/MFM/RLL support

-jwb