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DateTue, 11 May 2004 21:06:15 +0200
FromRene Herman <>
SubjectRe: Linux 2.6.6 "IDE cache-flush at shutdown fixes"
Rene Herman wrote:

> Bartlomiej Zolnierkiewicz wrote:> >> Please revert ALL changes to 2.6.6 and gather some debug information
>> using these simple patch.> > > Vanilla 2.6.6 with just this patch, at boot, directly after the 
> partition scan:> > hda: wcache=1 cmd=234> hda: task_no_data_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: task_no_data_intr: error=0x04 { DriveStatusError }
> hda: Write Cache FAILED Flushing!> > At reboot or halt:> > Shutdown: hda> hda: task_no_data_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: task_no_data_intr: error=0x04 { DriveStatusError }
> hda: task_no_data_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: task_no_data_intr: error=0x04 { DriveStatusError }
> hda: task_no_data_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: task_no_data_intr: error=0x04 { DriveStatusError }
> hda: task_no_data_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: task_no_data_intr: error=0x04 { DriveStatusError }
> hda: DMA disabled> ide0: reset: success> hda: task_no_data_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: task_no_data_intr: error=0x04 { DriveStatusError }
> hda: task_no_data_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: task_no_data_intr: error=0x04 { DriveStatusError }
> hda: task_no_data_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: task_no_data_intr: error=0x04 { DriveStatusError }
> hda: task_no_data_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: task_no_data_intr: error=0x04 { DriveStatusError }
> ide0: reset: success> hda: task_no_data_intr: status=0x51 { DriveReady SeekComplete Error }
> hda: task_no_data_intr: error=0x04 { DriveStatusError }
> Restarting system.> >> Oh and please check 'wcache' value from /proc/ide/hda/settings
>> now and with this patch applied.> > > Vanilla 2.6.6:> > rene@7ixe4:~/cache$ grep wcache settings-2.6.6> wcache                  1               0               1               rw
> > 2.6.6 with the de{flush,spin}ification patches:> > rene@7ixe4:~/cache$ grep wcache settings-2.6.6-hackedup
> wcache                  0               0               1               rw
> > Hrmpf. 0?> > Will test a few older Maxtor drives as well tonight. Hope it's useful.

Sorry for quoting everything, forgot to CC lkml first time.

Only took one. Does not happen on a (slightly) older Maxtor 4W030H2, 30G 
5400RPM drive. 2.6.6 vanilla with your debug patch:

Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
PIIX4: IDE controller at PCI slot 0000:00:07.1
PIIX4: chipset revision 1
PIIX4: not 100% native mode: will probe irqs later
     ide0: BM-DMA at 0xf000-0xf007, BIOS settings: hda:DMA, hdb:DMA
     ide1: BM-DMA at 0xf008-0xf00f, BIOS settings: hdc:DMA, hdd:DMA
hda: Maxtor 4W030H2, ATA DISK drive
ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
hdc: ATAPI-CD ROM-DRIVE-52MAX, ATAPI CD/DVD-ROM drive
hdd: 6X4X32, ATAPI CD/DVD-ROM drive
ide1 at 0x170-0x177,0x376 on irq 15
hda: max request size: 128KiB
hda: 60030432 sectors (30735 MB) w/2048KiB Cache, CHS=59554/16/63, UDMA(33)
  hda: hda1 hda2 hda3 hda4
hdc: ATAPI 52X CD-ROM drive, 128kB Cache, UDMA(33)
Uniform CD-ROM driver Revision: 3.20
hdd: ATAPI 32X CD-ROM CD-R/RW drive, 2048kB Cache, DMA
rene@5bt0:~$ su -c "cat /proc/ide/hda/settings" | grep wcache
wcache                  1               0               1               rw
Rene.
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