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    SubjectRe: Testing IDE-TCQ and Taskfile - doesn't work nicely:)
    On Mon, 2003-06-23 23:18:00 +0200, Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
    wrote in message <Pine.SOL.4.30.0306232315480.8078-200000@mion.elka.pw.edu.pl>:
    > On Mon, 23 Jun 2003, Jan-Benedict Glaw wrote:

    > > I've played a bit with my "mirror" machine
    > >
    > > - 200MHz Pentium-MMX
    > > - 64MB RAM
    > > - jbglaw@mirror:~$ cat /proc/ide/hd*/model
    > > WDC AC2850F # System drive
    > > IC35L040AVER07-0 # \
    > > IC35L120AVV207-0 # > Storage (with DM/LVM)
    > > Maxtor 4W100H6 # /
    > > - jbglaw@mirror:~$ lspci |grep IDE
    > > 00:07.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
    > > - Linux v2.5.73
    > > - <*> Intel PIIXn chipsets support
    > >
    > > Basically, if I enable Taskfile I/O, the box refuses to boot (basically,
    > > the first drive sounds really broken like "clack clack clack" and no
    > > data comes off the drive so there's no partition table, no root FS, but
    > > a panic:) Is anybody interested in nailing this bug down?
    >
    > YES

    What can I do about this one? I'll try to capture the lines... Taskfile
    I/O seems to hit my drive(s) really hard:)

    > > Disabling Taskfile lets me boot the box, but hdc doesn't like TCQ and
    > > gives errors:
    > >
    > > ide_tcq_intr_timeout: timeout waiting for service interrupt
    > > ide_tcq_intr_timeout: missing isr!
    > > hdc: invalidating tag queue (0 commands)
    > > hdc: drive_cmd: status=0x51 { DriveReady SeekComplete Error }
    > > hdc: drive_cmd: error=0x04 { DriveStatusError }
    > > [above messages repeat...]
    >
    > TCQ shouldn't be enabled on hdc, you have two drives on second ide
    > channel and current TCQ driver design allows only one drive per channel,
    > so proper fix is to not enable TCQ :-).
    >
    > Can you try attached patch?

    I'll rebuild with your patch and give it a try (TCQ enabled, Taskfile
    disabled...).

    MfG, JBG

    --
    Jan-Benedict Glaw jbglaw@lug-owl.de . +49-172-7608481
    "Eine Freie Meinung in einem Freien Kopf | Gegen Zensur | Gegen Krieg
    fuer einen Freien Staat voll Freier Bürger" | im Internet! | im Irak!
    ret = do_actions((curr | FREE_SPEECH) & ~(IRAQ_WAR_2 | DRM | TCPA));
    [unhandled content-type:application/pgp-signature]
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