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Bug 916060

Summary: Migration fails from xbzrle=on src host to xbzrle=off des host, src qemu-kvm status has both chance to be paused(postmigrate) or running
Product: Red Hat Enterprise Linux 7 Reporter: Shaolong Hu <shu>
Component: qemu-kvmAssignee: Orit Wasserman <owasserm>
Status: CLOSED CURRENTRELEASE QA Contact: Virtualization Bugs <virt-bugs>
Severity: medium Docs Contact:
Priority: medium    
Version: 7.0CC: acathrow, hhuang, juzhang, michen, qzhang, shu, virt-maint
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: QEMU 1.5.3 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-12-18 09:29:38 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:

Description Shaolong Hu 2013-02-27 07:00:06 UTC
Description of problem:
------------------------
In current RHEL7.0 test plan, we have a case migrate guest from xbzrle=on src host to xbzrle=off des host, expected result is migration fails, but guest running on src host correctly, test suggests migration does fail, but guest status on src host sometimes is paused(postmigrate) sometimes running.


Version-Release number of selected component (if applicable):
-----------------------------------------------------------------
qemu-kvm-1.3.0-5.el7.x86_64
guest: win2012-64


How reproducible:
------------------
2/2   1 time guest is running/ 1 time guest is paused(postmigrate)


Steps to Reproduce:
----------------------
1.CMD
/usr/libexec/qemu-kvm -enable-kvm -smp 4 -m 4G -name rhel6.3-64 -uuid 3f2ea5cd-3d29-48ff-aab2-23df1b6ae213 -netdev tap,script=/etc/qemu-ifup,id=netdev0 -device virtio-net-pci,netdev=netdev0,id=device-net0,mac=aa:54:00:11:22:33 -boot order=cd -monitor stdio -usb -device usb-tablet,id=input0 -chardev socket,id=s1,path=/tmp/s1,server,nowait -device isa-serial,chardev=s1 -vnc :10 -monitor tcp::1234,server,nowait  -device virtio-scsi-pci,bus=pci.0,id=scsi0 -drive file=nfs/win2012-64-virtio.qcow2,id=drive-scsi0-0-0,if=none,media=disk,cache=none,format=qcow2,werror=stop -device scsi-hd,drive=drive-scsi0-0-0,bus=scsi0.0,scsi-id=0,lun=0 -global PIIX4_PM.disable_s3=0 -global PIIX4_PM.disable_s4=0 -M pc-1.3

2.on src host:
(qemu) migrate_set_capability xbzrle on

3.migration fails on des host:
(qemu) qemu: warning: error while loading state section id 2
load of migration failed

5.on src host, 1 time:
(qemu) info status
VM status: paused (postmigrate)

1 time:
(qemu) info status
VM status: running

6. with the same xbzrle(on/off) on src/des host, won't hit the issue.



Expected results:
-------------------
Guest always be running on src host when migration fails, if this won't be supported by RHEL7.0, feel free to set WONTFIX, we will update test plan.

Comment 2 Orit Wasserman 2013-12-17 14:00:52 UTC
Can you try to reproduce with the latest rhel7 qemu version (1.5.3)?

Comment 3 Shaolong Hu 2013-12-18 08:14:32 UTC
Test with qemu-kvm-1.5.3-24.el7.x86_64, the problem has gone.