Re: Virtual SCSI disks hangs on heavy IO

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Guido Winkelmann <guido-kvml <at> thisisnotatest.de> writes:

> 
> Hi,
> 
> I am experiencing hangs in disk IO in systems hosted inside a virtual KVM 
> machine. When the virtual system disk is SCSI and when I am doing a lot of I/O 
> on it, I will eventually get error messages on the console and in dmesg like 
> these:


I do not have an explanation, but I have seen the same error under similar
circumstances. The server here is running libvirt 0.8.3-4 with QEMU 0.13.0 on
Fedora 14, on a multiprocessing Intel Xeon system. Only one guest is running at
the moment, but the error occurred during a large file copy operation. The
messages in the log were virtually identical to the ones you have seen.

Kind regards,

Scott




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