Hi Peter, On 03.05.2010 23:26, Peter Lieven wrote:
Hi Qemu/KVM Devel Team, i'm using qemu-kvm 0.12.3 with latest Kernel 2.6.33.3. As backend we use open-iSCSI with dm-multipath. Multipath is configured to queue i/o if no path is available. If we create a failure on all paths, qemu starts to consume 100% CPU due to i/o waits which is ok so far. 1 odd thing: The Monitor Interface is not responding any more ... What es a really blocker is that KVM crashes with: kvm: /usr/src/qemu-kvm-0.12.3/hw/ide/internal.h:507: bmdma_active_if: Assertion `bmdma->unit != (uint8_t)-1' failed. after the multipath has reestablisched at least one path. Any ideas? I remember this was working with earlier kernel/kvm/qemu versions.
I have the same issue on my machine, although I am using local storage (LVM or a physical disk) to write my data to. I reported the "Assertion failed" on March 17th to the list. Marcello and Avi had asked some question back then, but I don't know if they have come up with a fix for it.
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