Created attachment 795490 [details]
log file

Description of problem:
run serveral windows guest in rhevm 3.2 and run iozone for a few days.
two guest(win7-64,win8-64) were paused after runnning iozone for 5 days

Version-Release number of selected component (if applicable):
RHEV-toolsSetup_3.2_13.iso
virtio-win-prewhql-68
qemu-kvm-rhev-0.12.1.2-2.375.el6.x86_64
kernel-2.6.32-369.el6.x86_64
vdsm-4.10.2-22.0.el6ev.x86_64
libvirt-0.10.2-18.el6_4.8.x86_64

How reproducible:
once in two weeks

Steps to Reproduce:
1.boot 7 different windows guests include win7-64 and win8-64 in rhevm 3.2
2.run iozone on system disk in each guest for more than 5 days:
  the iozone command:iozone.exe -az -b c:\aaaa -g 30g -y 64k

Actual results:
win7-64 and win8-64 guests were pause,and rhevm has a warning message as "VM has been paused due to a storage IO error".
There is several messages in /var/log/libvirt/qemu/w8-64-longevity.log and w7-64-longevity.log as "block I/O error in device 'drive-virtio-disk0': Input/output error (5)"

Expected results:
guest works fine,no pause 

Additional info:
The attachment is some log files,if need anything,please let me know
The rhevm command:
/usr/libexec/qemu-kvm -name w7-64-longevity -S -M rhel6.4.0 -cpu Penryn -enable-kvm -m 1024 -smp 1,sockets=1,cores=1,threads=1 -uuid 3739b388-9179-4080-a755-51e8b48bdfdc -smbios type=1,manufacturer=Red Hat,product=RHEV Hypervisor,version=6Server-6.4.0.4.el6,serial=44454C4C-3100-1057-8054-B3C04F573258,uuid=3739b388-9179-4080-a755-51e8b48bdfdc -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/w7-64-longevity.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=2013-09-02T06:19:13,driftfix=slew -no-shutdown -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x4 -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/rhev/data-center/mnt/10.66.90.115:_vol_s2bcao228623_isopool/87fa60aa-1dac-45c0-b0ca-66f8b9841d9f/images/11111111-1111-1111-1111-111111111111/RHEV-toolsSetup_3.2_13.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw,serial= -device ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -drive file=/rhev/data-center/fab0800a-b0fb-462c-821a-07b75eac0a03/3d2facdc-1605-4ccc-8f39-e2af02c77258/images/314979f2-27d7-4af8-b604-2ed8d24147d8/588501ce-4682-47ee-bdd1-c1b81d1d0ee1,if=none,id=drive-virtio-disk0,format=raw,serial=314979f2-27d7-4af8-b604-2ed8d24147d8,cache=none,werror=stop,rerror=stop,aio=threads -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x5,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -netdev tap,fd=33,id=hostnet0,vhost=on,vhostfd=34 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=00:1a:4a:42:08:97,bus=pci.0,addr=0x3 -chardev socket,id=charchannel0,path=/var/lib/libvirt/qemu/channels/w7-64-longevity.com.redhat.rhevm.vdsm,server,nowait -device virtserialport,bus=virtio-serial0.0,nr=1,chardev=charchannel0,id=channel0,name=com.redhat.rhevm.vdsm -chardev socket,id=charchannel1,path=/var/lib/libvirt/qemu/channels/w7-64-longevity.org.qemu.guest_agent.0,server,nowait -device virtserialport,bus=virtio-serial0.0,nr=2,chardev=charchannel1,id=channel1,name=org.qemu.guest_agent.0 -chardev spicevmc,id=charchannel2,name=vdagent -device virtserialport,bus=virtio-serial0.0,nr=3,chardev=charchannel2,id=channel2,name=com.redhat.spice.0 -spice port=5904,tls-port=5905,addr=0,x509-dir=/etc/pki/vdsm/libvirt-spice,tls-channel=main,tls-channel=display,tls-channel=inputs,tls-channel=cursor,tls-channel=playback,tls-channel=record,tls-channel=smartcard,tls-channel=usbredir,seamless-migration=on -k en-us -vga qxl -global qxl-vga.ram_size=67108864 -global qxl-vga.vram_size=67108864 -incoming tcp:[::]:49153 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6