Messages in this thread | | | From | Jeff Moyer <> | Subject | Re: I/O scheduler deadlocks on Xen virtual block devices | Date | Thu, 02 Sep 2010 09:47:02 -0400 |
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Doug Neal <dneallkml@gmail.com> writes:
>> >> Did you try these different I/O schedulers in the domU or on the dom0? >> Does switching I/O schedulers in either place make the problem go away >> when it happens? >> > > In the domU, and the bug was present in all cases. The dom0 was using > cfq. I'll run the tests again using each scheduler in the dom0 with > domU set to noop and report back.
While I think this is an interesting test, you need only test one I/O scheduler in the dom0. Also, I think you misunderstood the second question. I'd like to know if switching I/O schedulers while the system is in this bad state helps get I/O going again.
Cheers, Jeff
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