[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] hdc: lost interrupt
On Fri, Jan 21, 2005 at 04:08:07PM -0600, David F Barrera wrote: > I am seeing a kernel message, "hdc: lost interrupt", when running LTP on > the xen0 domain. The first time I saw the 'kernel: hdc: lost interrupt' > in /var/log/messages, I was running LTP on both xen0 and xenU domains. > The xenU domain was totally hung at this point. Suspecting a setup > error, I re-checked the installation and reran LTP on xen0 alone, > without having anything running on xenU. Again, I saw the error. To rule > out a hardware problem, I decided to run the same tests on a regular > kernel from kernel.org (2.6.10) and on the RHEL 4 kernel from Red Hat, > both of which ran without showing the error. I don't know what to make > of it. I am not suspecting a hardware error since the message does not > show up when running on non-xen kernels. This may be a false lead, but I saw this (and other significant IO-related weirdness) when I moved hardware around and forgot to enable kernel DMA support for the IDE chipset. Overall system performance tanked (obviously), I got a large number of hdX: Lost interrupt warnings, and even some outright panics. Turning on DMA in dom0's kernel config cleared it all up. Might be worth investigating anyhow, -m ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/xen-devel
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