Messages in this thread | | | Date | Fri, 21 Mar 2008 23:49:06 +0100 (CET) | From | Mikulas Patocka <> | Subject | Re: APM crashes when IO is going on |
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On Fri, 21 Mar 2008, Rafael J. Wysocki wrote:
> On Friday, 21 of March 2008, Mikulas Patocka wrote: > > > > I found another problem --- present in 2.6.23.1, 2.6.25rc3, 2.6.25rc6 > > > > > > > > --- when I run three threads concurrently reading raw disk partition and > > > > suspend, I get 100% reproducible failure. (with one thread running it > > > > usually succeeds, sometimes fail) > > > > > > Are they userland threads or kernel threads? > > > > Useland threads. Just dd if=/dev/hda of=/dev/null > > > > > > Either the on-going I/O will jam BIOS and I need to remove power to > > > > continue. > > > > > > > > Or the machine suspends, wakes up and reports "hda: lost interrupt" > > > > (2.6.23.1 was able to recover from this condition, 2.6.25rc3,6 does not > > > > recover and it is not able to send any more disk IOs). > > > > > > > > How is suspending disk IO supposed to work? > > > > > > That depends on the driver, if I understand your question correctly. > > > > The driver is normal IDE. > > Do you mean IDE_GENERIC/BLK_DEV_GENERIC?
Compaq Triflex IDE. The computer is Compaq Armada 7400 (Pentium 2/300MHz)
Mikulas
> Rafael >
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