Re: Linux 2.6.6 "IDE cache-flush at shutdown fixes"

[Rene Herman]

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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