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[Qemu-devel] Re: [PATCH v0 0/5]: BLOCK_IO_ERROR QMP event

From: Kevin Wolf
Subject: [Qemu-devel] Re: [PATCH v0 0/5]: BLOCK_IO_ERROR QMP event
Date: Wed, 03 Feb 2010 11:25:13 +0100
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20091209 Fedora/3.0-4.fc12 Thunderbird/3.0

Am 02.02.2010 22:10, schrieb Luiz Capitulino:
>  Hi,
>  This series adds the BLOCK_IO_ERROR event libvirt guys have requested,
> I have made some improvements after Kevin's feedback and hope it's in better
> shape now.
>  The only small issue is that I couldn't get a read error. I've followed 
> Kevin's
> advices wrt NFS, but got only write errors...

I should have explained in more detail what I'm doing to produce a read
error... I boot the system from a local image that won't go away when
NFS is down. I add another image (can be empty) stored on NFS and with
cache=off. Then I turn NFS off and start something like a dd if=/dev/vdb
of=/dev/null iflag=direct. This way you produce only reads.


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