Bug 986793
| Summary: | fail to hotunplug virtio-serial bus after hotunplug the virtserialport | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Sibiao Luo <sluo> |
| Component: | qemu-kvm | Assignee: | Amit Shah <amit.shah> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Virtualization Bugs <virt-bugs> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 6.5 | CC: | acathrow, amit.shah, bsarathy, chayang, flang, juzhang, mdeng, michen, mkenneth, qzhang, sluo, virt-maint, xfu |
| Target Milestone: | rc | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2013-08-12 08:34:29 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Can this be reproduced in a recent build? flang will help do this as sluo is on vacation. Test this bug as follow version,but both can not reproduce.Hotunplug/hotplug work well. Version(bug reporter use): Host # uname -r 2.6.32-398.el6.x86_64 # rpm -q qemu-kvm qemu-kvm-0.12.1.2-2.378.el6.x86_64 Guest: 2.6.32-398.el6.x86_64 Senario 2) Version: Host: Version: # uname -r 2.6.32-405.el6.x86_64 # rpm -q qemu-kvm qemu-kvm-0.12.1.2-2.382.el6.x86_64 Guest: 2.6.32-403.el6.x86_64 The steps as same as reproduce(comment0) MY CLI: /usr/libexec/qemu-kvm -m 4G -smp 4 -device virtio-scsi-pci,bus=pci.0,addr=0x5,id=scsi0 -drive file=/dev/vg-flang/lv-flang,if=none,id=drive-scsi0-0-0,media=disk,cache=none,format=raw,werror=stop,rerror=stop,aio=native -device scsi-hd,drive=drive-scsi0-0-0,bus=scsi0.0,scsi-id=0,lun=0,id=flang,bootindex=1 -monitor stdio -vnc :10 -vga qxl -netdev tap,id=hostnet0,vhost=on,script=/etc/qemu-ifup -device virtio-net-pci,netdev=hostnet0,mac=00:10:20:2d:31:22,bus=pci.0,addr=0x4,id=net0 -qmp tcp:0:5555,server,nowait -global PIIX4_PM.disable_s3=0 -global PIIX4_PM.disable_s4=0 -boot menu=on -monitor stdio -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 Thanks for confirming. |
Description of problem: boot guest with virtio-serial, and do hotunplug the virtserialport firstly, then hutunplug the virtio-serial bus that fail. BTW, if hotunplug the virtio-serial bus directly without hot-remove the virtserialport firstly, it can remove the virtio-serial bus and port successfully. Version-Release number of selected component (if applicable): host info: kernel-2.6.32-398.el6.x86_64 qemu-kvm-0.12.1.2-2.378.el6.x86_64 guest info: kernel-2.6.32-398.el6.x86_64 How reproducible: 100% Steps to Reproduce: 1.boot guest with virtio-serial. e.g:...-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 2.do hotunplug the virtserialport firstly. (qemu) device_del port1 (qemu) device_del port2 3.then hutunplug the virtio-serial bus. (qemu) device_del virtio-serial0 Actual results: after step3, it can complete excuting 'device_del virtio-serial0' command, but the virtio-serial bus still existing in info qtree, and if hotadd it again that prompt duplicate ID 'virtio-serial0' for device. (qemu) info qtree bus: main-system-bus type System dev: i440FX-pcihost, id "" ... dev: virtio-serial-pci, id "virtio-serial0" dev-prop: vectors = 0 dev-prop: class = 0x780 dev-prop: indirect_desc = on dev-prop: event_idx = on dev-prop: max_ports = 16 dev-prop: flow_control = 1 bus-prop: addr = 03.0 bus-prop: romfile = <null> bus-prop: rombar = 1 bus-prop: multifunction = off class Class 0780, addr 00:03.0, pci id 1af4:1003 (sub 1af4:0003) bar 0: i/o at 0xffffffffffffffff [0x1e] bus: virtio-serial0.0 type virtio-serial-bus ... (qemu) device_add virtio-serial-pci,id=virtio-serial0,max_ports=16,vectors=0,bus=pci.0,addr=0x3 Duplicate ID 'virtio-serial0' for device (qemu) device_del virtio-serial0 (qemu) device_add virtio-serial-pci,id=virtio-serial0,max_ports=16,vectors=0,bus=pci.0,addr=0x3 Duplicate ID 'virtio-serial0' for device Expected results: It can do hotunplug the virtserialport firstly and then hutunplug the virtio-serial bus successfully. Additional info: