| Summary: | Guest with "udp" serial device will show freezen screen after boot up. | ||||||||
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| Product: | Red Hat Enterprise Linux 6 | Reporter: | Huming Jiang <hjiang> | ||||||
| Component: | qemu-kvm | Assignee: | Virtualization Maintenance <virt-maint> | ||||||
| Status: | CLOSED NOTABUG | QA Contact: | Virtualization Bugs <virt-bugs> | ||||||
| Severity: | medium | Docs Contact: | |||||||
| Priority: | high | ||||||||
| Version: | 6.2 | CC: | bcao, dyuan, jdenemar, juzhang, jyang, mkenneth, mzhan, rwu, tburke, tnagata, vbian, virt-maint | ||||||
| Target Milestone: | rc | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | x86_64 | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2011-07-13 08:23:12 UTC | Type: | --- | ||||||
| Regression: | --- | Mount Type: | --- | ||||||
| Documentation: | --- | CRM: | |||||||
| Verified Versions: | Category: | --- | |||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||
| Attachments: |
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Description
Huming Jiang
2011-07-12 10:25:52 UTC
Created attachment 512397 [details]
log message
Created attachment 512398 [details]
Guest xml file
A mistake leads to the bug description above. Sorry for that. Now edit as follows:
Description of problem:
Add a serial device with type "udp" to a guest, and boot up the guest, It will show freezen screen, because it will hang forever.
Version-Release number of selected component (if applicable):
virt-manager-0.8.6-4.el6.noarch
libvirt-0.9.2-1.el6.x86_64
qemu-kvm-0.12.1.2-2.165.el6.x86_64
kernel-2.6.32-156.el6.x86_6
and the kernel version of the guest is :
kernel-2.6.32.131.0.15.el6.x86_64
How reproducible:
always
Steps to Reproduce:
Make sure there exists an shut-down healthy guest, for example, a guest with RHEL6 os.
1. Remove all the serial device of the guest, then add a new one, type is "udp", port of host is "4560", leave other parameters default.
2. Start the guest.
# ps -aef | grep kvm
root 857 2 0 14:06 ? 00:00:00 [kvm-irqfd-clean]
qemu 18805 1 6 18:41 ? 00:00:20 /usr/libexec/qemu-kvm -S -M rhel6.1.0 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name sound-test -uuid cd313cf9-ec30-f87b-f4c7-9cc2cc6d5e3b -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/sound-test.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -boot c -drive file=/var/lib/libvirt/images/sound-test.img,if=none,id=drive-ide0-0-0,format=raw,cache=none,aio=threads -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -netdev tap,fd=20,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:3b:81:f1,bus=pci.0,addr=0x3 -chardev udp,id=charserial0,host=127.0.0.1,port=4560,localaddr=127.0.0.1,localport=4556 -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:0 -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4
root 18824 2 0 18:41 ? 00:00:00 [kvm-pit-wq]
root 18969 10612 0 18:46 pts/0 00:00:00 grep kvm
Actual results:
The guest will show freezen screen.
Expected results:
the guest could be started successfully.
Additional info:
There is no problem about tcp serial device.
and i found in the guest xml file, there exists similar content:
...
<serial type='udp'>
<source mode='bind' host='127.0.0.1' service='4556'/>
<source mode='connect' host='127.0.0.1' service='4560'/>
<target port='0'/>
</serial>
<console type='udp'>
<source mode='bind' host='127.0.0.1' service='4556'/>
<source mode='connect' host='127.0.0.1' service='4560'/>
<target type='serial' port='0'/>
</console>
...
if i delete any part, for example, delete "serial" part or the "console" part, the guest could be started successfully with the serial device, though the xml file of the guest has not been changed after the guest boot up.
# virsh edit sound-test
Domain sound-test XML configuration edited.
# virsh start sound-test
Domain sound-test started
(In reply to comment #4) > A mistake leads to the bug description above. Sorry for that. Now edit as > follows: > > Description of problem: > Add a serial device with type "udp" to a guest, and boot up the guest, It will > show freezen screen, because it will hang forever. > > > Version-Release number of selected component (if applicable): > virt-manager-0.8.6-4.el6.noarch > libvirt-0.9.2-1.el6.x86_64 > qemu-kvm-0.12.1.2-2.165.el6.x86_64 > kernel-2.6.32-156.el6.x86_6 > > and the kernel version of the guest is : > kernel-2.6.32.131.0.15.el6.x86_64 > > How reproducible: > always > > Steps to Reproduce: > Make sure there exists an shut-down healthy guest, for example, a guest with > RHEL6 os. > 1. Remove all the serial device of the guest, then add a new one, type is > "udp", port of host is "4560", leave other parameters default. > 2. Start the guest. > > # ps -aef | grep kvm > root 857 2 0 14:06 ? 00:00:00 [kvm-irqfd-clean] > qemu 18805 1 6 18:41 ? 00:00:20 /usr/libexec/qemu-kvm -S -M > rhel6.1.0 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name > sound-test -uuid cd313cf9-ec30-f87b-f4c7-9cc2cc6d5e3b -nodefconfig -nodefaults > -chardev > socket,id=charmonitor,path=/var/lib/libvirt/qemu/sound-test.monitor,server,nowait > -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -boot c -drive > file=/var/lib/libvirt/images/sound-test.img,if=none,id=drive-ide0-0-0,format=raw,cache=none,aio=threads > -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -netdev > tap,fd=20,id=hostnet0 -device > rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:3b:81:f1,bus=pci.0,addr=0x3 > -chardev > udp,id=charserial0,host=127.0.0.1,port=4560,localaddr=127.0.0.1,localport=4556 > -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:0 -vga > cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 > root 18824 2 0 18:41 ? 00:00:00 [kvm-pit-wq] > root 18969 10612 0 18:46 pts/0 00:00:00 grep kvm > > Actual results: > The guest will show freezen screen. > Expected results: > the guest could be started successfully. > > Additional info: > There is no problem about tcp serial device. > and i found in the guest xml file, there exists similar content: > ... > <serial type='udp'> > <source mode='bind' host='127.0.0.1' service='4556'/> > <source mode='connect' host='127.0.0.1' service='4560'/> > <target port='0'/> > </serial> > <console type='udp'> > <source mode='bind' host='127.0.0.1' service='4556'/> > <source mode='connect' host='127.0.0.1' service='4560'/> > <target type='serial' port='0'/> > </console> > ... > if i delete any part, for example, delete "serial" part or the "console" part, > the guest could be started successfully with the serial device, though the xml > file of the guest has not been changed after the guest boot up. > > # virsh edit sound-test > Domain sound-test XML configuration edited. > > # virsh start sound-test > Domain sound-test started The guest will be started successful,and will not hang. delete "serial" part: #ps -aef | grep kvm root 857 2 0 14:06 ? 00:00:00 [kvm-irqfd-clean] qemu 24894 1 57 20:04 ? 00:00:24 /usr/libexec/qemu-kvm -S -M rhel6.1.0 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name sound-test -uuid cd313cf9-ec30-f87b-f4c7-9cc2cc6d5e3b -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/sound-test.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -boot c -drive file=/var/lib/libvirt/images/sound-test.img,if=none,id=drive-ide0-0-0,format=raw,cache=none,aio=threads -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -netdev tap,fd=26,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:3b:81:f1,bus=pci.0,addr=0x3 -chardev udp,id=charserial0,host=127.0.0.1,port=4560,localaddr=127.0.0.1,localport=4556 -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:0 -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 root 24913 2 0 20:04 ? 00:00:00 [kvm-pit-wq] root 24964 10612 0 20:04 pts/0 00:00:00 grep kvm delete "console" part: #ps -aef | grep kvm root 857 2 0 14:06 ? 00:00:00 [kvm-irqfd-clean] qemu 25183 1 43 20:07 ? 00:00:24 /usr/libexec/qemu-kvm -S -M rhel6.1.0 -enable-kvm -m 512 -smp 1,sockets=1,cores=1,threads=1 -name sound-test -uuid cd313cf9-ec30-f87b-f4c7-9cc2cc6d5e3b -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/sound-test.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -boot c -drive file=/var/lib/libvirt/images/sound-test.img,if=none,id=drive-ide0-0-0,format=raw,cache=none,aio=threads -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -netdev tap,fd=26,id=hostnet0 -device rtl8139,netdev=hostnet0,id=net0,mac=52:54:00:3b:81:f1,bus=pci.0,addr=0x3 -chardev udp,id=charserial0,host=127.0.0.1,port=4560,localaddr=127.0.0.1,localport=4556 -device isa-serial,chardev=charserial0,id=serial0 -usb -vnc 127.0.0.1:0 -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x4 root 25202 2 0 20:07 ? 00:00:00 [kvm-pit-wq] root 25266 10612 0 20:08 pts/0 00:00:00 grep kvm Reproduced on qemu-kvm-0.12.1.2-2.169.el6.x86_64 steps: 1.start VM with -chardev udp,port=6666 eg:/usr/libexec/qemu-kvm -M rhel6.2.0 -enable-kvm -m 1024 -smp 2,sockets=2,cores=1,threads=1 -name Test -uuid 2e426ce8-0cfa-48f7-13df-5cfaa2d15368 -rtc base=utc -boot c -drive file=/var/lib/libvirt/images/Test.img,if=none,id=drive-virtio-disk0,format=qcow2,cache=none,aio=threads -device virtio-blk-pci,bus=pci.0,addr=0x5,bootindex=1,drive=drive-virtio-disk0,id=virtio-disk0,scsi=on -netdev tap,id=hostnet0,vhost=on -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:07:ce:0d,bus=pci.0,addr=0x3 -chardev udp,id=charserial0,port=6555 -device isa-serial,chardev=charserial0,id=serial0 -usb -device usb-tablet,id=input0 -vnc 0.0.0.0:0 -vga cirrus -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 -monitor stdio Actual Restult: qemu-kvm process freezed udp chardev is not a supported device. Can you show me the IEEE testplan you got it from? |