Bug 987725

host info:
2.6.32-400.el6.x86_64
qemu-kvm-rhev-0.12.1.2-2.379.el6.x86_64
seabios-0.6.1.2-28.el6.x86_64
guest info:
2.6.32-400.el6.x86_64

# /usr/libexec/qemu-kvm -S -M rhel6.5.0 -cpu SandyBridge -enable-kvm -m 4096 -smp 4,sockets=2,cores=2,threads=1 -no-kvm-pit-reinjection -name sluo -uuid 43425b70-86e5-4664-bf2c-3b76699b8bec -rtc base=localtime,clock=host,driftfix=slew -device virtio-serial-pci,id=virtio-serial0,max_ports=16,vectors=0,bus=pci.0,addr=0x3 -chardev socket,id=channel1,path=/tmp/helloworld1,server,nowait -device virtserialport,chardev=channel1,name=com.redhat.rhevm.vdsm.1,bus=virtio-serial0.0,id=port1,nr=1 -chardev socket,id=channel2,path=/tmp/helloworld2,server,nowait -device virtserialport,chardev=channel2,name=com.redhat.rhevm.vdsm.2,bus=virtio-serial0.0,id=port2,nr=2 -drive file=/home/RHEL6.5-20130721.n.0_6.5_Server_x86_64.qcow2,if=none,id=drive-system-disk,format=qcow2,cache=none,aio=native,werror=stop,rerror=stop,serial="QEMU-DISK1",bps=-1024000,iops=-100 -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-system-disk,id=system-disk,bootindex=1 -device virtio-balloon-pci,id=ballooning,bus=pci.0,addr=0x5 -global PIIX4_PM.disable_s3=0 -global PIIX4_PM.disable_s4=0 -netdev tap,id=hostnet0,vhost=off,script=/etc/qemu-ifup -device virtio-net-pci,netdev=hostnet0,id=virtio-net-pci0,mac=2C:41:38:B6:40:21,bus=pci.0,addr=0x6,bootindex=2 -k en-us -boot menu=on -qmp tcp:0:4444,server,nowait -serial unix:/tmp/ttyS0,server,nowait -vnc :1 -spice port=5931,disable-ticketing -monitor stdio
(qemu) info block
drive-system-disk: removable=0 io-status=ok file=/home/RHEL6.5-20130721.n.0_6.5_Server_x86_64.qcow2 ro=0 drv=qcow2 encrypted=0 bps=-1024000 bps_rd=0 bps_wr=0 iops=-100 iops_rd=0 iops_wr=0
ide1-cd0: removable=1 locked=0 tray-open=0 io-status=ok [not inserted]
floppy0: removable=1 locked=0 tray-open=0 [not inserted]
sd0: removable=1 locked=0 tray-open=0 [not inserted]

Verify this issue on qemu-kvm-rhev-0.12.1.2-2.398.el6.x86_64.

host info:
# uname -r && rpm -q qemu-kvm-rhev
2.6.32-413.el6.x86_64
qemu-kvm-rhev-0.12.1.2-2.398.el6.x86_64

guest info:
kernel-2.6.32-413.el6.x86_64

# /usr/libexec/qemu-kvm...-drive file=/home/RHEL6.5-20130814.n.0-6.5-Server.qcow2,if=none,id=drive-system-disk,format=qcow2,cache=none,aio=native,werror=stop,rerror=stop,serial="QEMU-DISK1",bps=-1024000,iops=-100...
qemu-kvm: -drive file=/home/RHEL6.5-20130814.n.0-6.5-Server.qcow2,if=none,id=drive-system-disk,format=qcow2,cache=none,aio=native,werror=stop,rerror=stop,serial=QEMU-DISK1,bps=-1024000,iops=-100: bps and iops values must be 0 or greater

It fail to boot guest with specifying iops,bps as negative value, and qemu will quit with a friendly message reminds.

Base on above, this issue has been fixed correctly, Move to verified status, please correct me if any problem.

Best Regards,
sluo

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHSA-2013-1754.html