Messages in this thread | | | Date | Thu, 18 Apr 2002 14:57:07 +0200 | From | Jens Axboe <> | Subject | Re: [PATCH] IDE TCQ #4 |
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On Thu, Apr 18 2002, Sebastian Droege wrote: > On Thu, 18 Apr 2002 13:20:15 +0200 > Martin Dalecki <dalecki@evision-ventures.com> wrote: > > > Sebastian Droege wrote: > > > On Wed, 17 Apr 2002 12:42:39 +0200 > > > Martin Dalecki <dalecki@evision-ventures.com> wrote: > > > > > > > > >>>2. > > >>>when I cat /proc/ide/ide1/hdc/identify I get 2 unexpected interrupts > > >>>hdc and hdd are both cdrom drives (accessed via scsi-emulation if relevant) > > >> > > >> > but the problem shows up only with hdc > > >> > > >>Duh oh... This is actually a good hint. I will look after > > >>this. > > >> > > >> > > >>>and maybe a third problem ;) > > >>>in /proc/ide/ide0/hda/tcq there is written: > > >>>DMA status: not running > > >> > > >>This is harmless it just shows that there was no DMA transfer in flight the > > >>time you have cat-ed this file. > > >> > > >> > > >>>but DMA is explicitly enabled by hdparm and shows up in /proc/ide/ide0/hda/settings > > >>> > > >>>I'll do some more testings later the day > > >> > > > Hi again, > > > after some playing with hdparm I found something bad :( > > > > > > ide_tcq_intr_timeout: timeout waiting for interrupt > > > ide_tcq_intr_timeout: hwgroup not busy > > > hda: invalidating pending queue > > > ide_tcq_invalidate_queue: done > > > > > > and then... nothing works anymore -> total lockup of the IDE system > > > This happens only (?) when I put hdparm -qa1 -qA1 -qc1 -qd1 -qm16 -qu1 -qW1 /dev/hda (the same with hdb) in my bootscripts > > > When I start hdparm later everything works fine first, but after a while (and when I'm under X) the IDE system is crashed > > > > > > I have enabled following options: > > > CONFIG_BLK_DEV_IDE_TCQ=y > > > CONFIG_BLK_DEV_IDE_TCQ_FULL=y > > > CONFIG_BLK_DEV_IDE_TCQ_DEFAULT=y > > > CONFIG_BLK_DEV_IDE_TCQ_DEPTH=32 > > > > > > I hope this helps somehow but I don't know what further informations I can provide > > > > > > BTW: I think we should create devfs entries for ide-scsi devices (because hdparm doesn't take scdX ;) ) > > > > > > Bye > > > > I don't know whatever you have already tryed the recend patches for 2.5.8. > > The problem in place is presumably fixed there (tough there are still > > problems with ide-cd remaining which I'm working on right now.) > > > This problem exists also with your newest ide patches (I think 39 is the newest) > And again: I don't see how ide-cd can cause this problem... I access my cdroms via scsi-emulation and ide-cd isn't compiled into the kernel
Try disabling the CONFIG_BLK_DEV_IDE_TCQ_FULL option.
-- Jens Axboe
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