Bug 1091830
| Summary: | host core dump after local migration | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Jun Li <juli> |
| Component: | qemu-kvm | Assignee: | Juan Quintela <quintela> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | xianwang <xianwang> |
| Severity: | medium | Docs Contact: | |
| Priority: | high | ||
| Version: | 7.0 | CC: | hhuang, juzhang, michen, qzhang, rbalakri, virt-maint, xfu, xianwang |
| Target Milestone: | rc | Keywords: | FutureFeature, Tracking |
| Target Release: | --- | ||
| Hardware: | x86_64 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Enhancement | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-08-21 17:36:56 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: | |||
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Description
Jun Li
2014-04-28 07:18:45 UTC
Please note: I found this issue only once by accident during my random testing. I do not remember exact steps and exact command line. Currently, what I can provides are host vmcore and vmcore-dmesg.txt. Please check whether it is useful. It's ok close this bz as not a bz in my side if the infos I provides are useless. Any further testing needed, free to update it in the bz. QE has only been able to reproduce it once, three years ago, and we have had changes all around migration and floppy support. I propose closing it. (In reply to Juan Quintela from comment #9) > QE has only been able to reproduce it once, three years ago, and we have had > changes all around migration and floppy support. I propose closing it. Hi Qunfang, Could you have a look whether this bz can be reproduced in latest qemu-kvm build? Best Regards, Junyi (In reply to juzhang from comment #10) > (In reply to Juan Quintela from comment #9) > > QE has only been able to reproduce it once, three years ago, and we have had > > changes all around migration and floppy support. I propose closing it. > > Hi Qunfang, > > Could you have a look whether this bz can be reproduced in latest qemu-kvm > build? > > Best Regards, > Junyi I have re-test this scenario with latest build, but I can't reproduce this issue. Host: 3.10.0-679.el7.x86_64 qemu-kvm-rhev-2.9.0-10.el7.x86_64 seabios-1.10.2-3.el7.x86_64 Gugest: 3.10.0-679.el7.x86_64 steps: 1.Boot a guest as following qemu cli: /usr/libexec/qemu-kvm \ -name 'avocado-vt-vm1' \ -sandbox off \ -machine pc \ -nodefaults \ -vga std \ -device virtio-serial-pci,id=virtio_serial_pci0,bus=pci.0,addr=03 \ -device qemu-xhci,id=usb1,bus=pci.0 \ -device virtio-scsi-pci,id=virtio_scsi_pci0,bus=pci.0,addr=05 \ -drive id=drive_image1,if=none,snapshot=off,format=qcow2,snapshot=off,file=/root/rhel74-64-virtio-scsi.qcow2 \ -device scsi-hd,id=image1,drive=drive_image1,bus=virtio_scsi_pci0.0 \ -device virtio-net-pci,mac=9a:7b:7c:7d:7e:72,id=id9HRc5V,vectors=4,netdev=idjlQN53,bus=pci.0,addr=10 \ -netdev tap,id=idjlQN53,vhost=off,script=/etc/qemu-ifup,downscript=/etc/qemu-ifdown \ -m 4G \ -smp 4 \ -name debug-threads=on \ -device usb-hub,id=hub1,port=1 \ -device usb-mouse,id=usbmouse,port=1.1\ -device usb-kbd,id=usbkbd,port=1.2\ -device usb-tablet,id=usbtablet,port=1.3\ -fda /root/virtio-win-prewhql-0.1-134_amd64.vfd \ -vnc :1 \ -incoming tcp:0:5801 \ -rtc base=localtime,clock=vm,driftfix=slew \ -boot order=cdn,once=c,menu=off,strict=off \ -monitor stdio \ -enable-kvm check the block: (qemu) info block drive_image1 (#block126): /root/rhel74-64-virtio-scsi.qcow2 (qcow2) Cache mode: writeback floppy0 (#block393): /root/virtio-win-prewhql-0.1-134_amd64.vfd (raw) Removable device: not locked, tray closed Cache mode: writeback 2.Stress guest: # stress --cpu 4 --io 4 --vm 2 --vm-bytes 128M 3.Change floppy file: (qemu) eject floppy0 (qemu) info block drive_image1 (#block126): /root/rhel74-64-virtio-scsi.qcow2 (qcow2) Cache mode: writeback floppy0: [not inserted] Removable device: not locked, tray closed (qemu) change floppy0 /root/virtio-win-prewhql-0.1-139_amd64.vfd (qemu) info block drive_image1 (#block126): /root/rhel74-64-virtio-scsi.qcow2 (qcow2) Cache mode: writeback floppy0 (#block504): /root/virtio-win-prewhql-0.1-139_amd64.vfd (raw) Removable device: not locked, tray closed Cache mode: writeback 4.Launch listening mode on the same host with "-incoming tcp:0:5801" and with the new floppy file:"-fda /root/virtio-win-prewhql-0.1-139_amd64.vfd" 5.Do local migration (qemu) migrate -d tcp:127.0.0.1:5802 result: migration completed and vm works well. So, this issue is not exist for the newest build. |