Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 867724

Summary: Libvirt sometimes fails to wait on spice to migrate
Product: Red Hat Enterprise Linux 6 Reporter: Michal Privoznik <mprivozn>
Component: libvirtAssignee: Michal Privoznik <mprivozn>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 6.4CC: acathrow, dyasny, dyuan, mzhan, rwu, weizhan, ydu, zhpeng, zpeng
Target Milestone: rc   
Target Release: 6.4   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: libvirt-0.10.2-5.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-02-21 07:10:31 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:
Bug Depends On:    
Bug Blocks: 836133    
Attachments:
Description Flags
full libvirtd log none

Description Michal Privoznik 2012-10-18 07:56:35 UTC
Description of problem:

Libvirt currently holds up migration and lets spice to migrate its internal data. During this, libvirt repeatedly asks 'query-spice' to determine if it has completed. Qemu replies with a boolean. However, libvirt expects string so the conversion will fail and libvirt simply fallbacks into pre-seamless mode by proclaiming migration as finished.

Version-Release number of selected component (if applicable):

libvirt-0.10.2-2.el6.x86_64

How reproducible:

few times, when spice hasn't migrated its state yet and 'false' is reported to 'query-spice'

Steps to Reproduce:
1.
2.
3.
  
Actual results:

libvirt prematurely kills qemu

Expected results:

libvirt kills qemu after query-spice reported 'true'.

Additional info:

Upstream patch has been proposed:
https://www.redhat.com/archives/libvir-list/2012-October/msg00961.html

Comment 2 Michal Privoznik 2012-10-18 08:23:45 UTC
*** Bug 867737 has been marked as a duplicate of this bug. ***

Comment 5 zhe peng 2012-10-25 08:25:17 UTC
I can reproduce this with libvirt-0.10.2-2.el6.x86_64

verify with pkgs:
libvirt-0.10.2-5.el6.x86_64
kernel-2.6.32-323.el6.x86_64
qemu-kvm-0.12.1.2-2.320.el6.x86_64
spice-server-0.12.0-1.el6.x86_64
spice-gtk-0.14-4.el6.x86_64
spice-protocol-0.12.2-1.el6.noarch
spice-glib-0.14-4.el6.x86_64
virt-viewer-0.5.2-16.el6.x86_64

step:
 1: prepare two machine for migration 
 2: on source, create a windows guest with spice
 .....
  <graphics type='spice' autoport='yes' listen='0.0.0.0' keymap='en-us'>
      <listen type='address' address='0.0.0.0'/>
    </graphics>
 .....
 3: start guest ,use virt-viewer/remote-viewer to connect guest
  #virsh start $guest
  #virt-viewer $guest
  #remote-viewer spice://$source/?port=5901
 4: migrate guest to target
  #virsh migrate win7_64 qemu+ssh://target.redhat.com/system
 5: check qemu process,make sure seamless-migration=on
  #ps -ef | grep kvm
   .....
  -spice port=5901,addr=0.0.0.0,disable-ticketing,seamless-migration=on -k en-US -vga qxl -global qxl-vga.vram_size=67108864 -device qxl,id=video1,vram_size=67108864,bus=pci.0,addr=0x7 -device intel-hda,id=sound0,bus=pci.0,addr=0x6
   .....
  6:after migrate finished,virt-viewer still connect the guest and worked well
  7:check libvirt log
 ...
 2012-10-25 21:42:11.089+0000: 27729: debug : virJSONValueToString:1133 :  result={"execute":"query-spice","id":"libvirt-123"}
 2012-10-25 21:42:11.089+0000: 27729: debug : qemuMonitorJSONCommandWithFd:263 : Send command '{"execute":"query-spice","id":"libvirt-123"}' for write with FD -1
   ......
   2012-10-25 21:42:11.090+0000: 27724: debug : qemuMonitorIOProcess:353 : QEMU_MONITOR_IO_PROCESS: mon=0x7fc6a4007250 buf={"return": {"migrated": false, "enabled": true, "auth": "none", "port": 5901, "host": "0.0.0.0", "channels": [{"port": "54078", "family": "ipv4", "channel-type": 1, "connection-id": 1804289383, "host": "127.0.0.1", "channel-id": 0, "tls": false}, {"port": "54083", "family": "ipv4", "channel-type": 9, "connection-id": 1804289383, "host": "127.0.0.1", "channel-id": 0, "tls": false}, {"port": "54084", "family": "ipv4", "channel-type": 2, "connection-id": 1804289383, "host": "127.0.0.1", "channel-id": 1, "tls": false}, {"port": "54089", "family": "ipv4", "channel-type": 4, "connection-id": 1804289383, "host": "127.0.0.1", "channel-id": 1, "tls": false}, {"port": "54088", "family": "ipv4", "channel-type": 3, "connection-id": 1804289383, "host": "127.0.0.1", "channel-id": 0, "tls": false}, {"port": "54085", "family": "ipv4", "channel-type": 2, "connection-id": 1804289383, "host": "127.0.0.1", "channel-id": 0, "tls": false}, {"port": "54091", "family": "ipv4", "channel-type": 4, "connection-id": 1804289383, "host": len=1023
  .....
 2012-10-25 21:42:20.543+0000: 27724: debug : qemuMonitorIOProcess:353 : QEMU_MONITOR_IO_PROCESS: mon=0x7fc6a4007250 buf={"return": {"migrated": true, "enabled": true, "auth": "none", "port": 5901, "host": "0.0.0.0", "channels": []}, "id": "libvirt-325"}^M
 len=135
2012-10-25 21:42:20.543+0000: 27724: debug : qemuMonitorJSONIOProcessLine:150 : Line [{"return": {"migrated": true, "enabled": true, "auth": "none", "port": 5901, "host": "0.0.0.0", "channels": []}, "id": "libvirt-325"}]
2012-10-25 21:42:20.543+0000: 27724: debug : virJSONValueFromString:975 : string={"return": {"migrated": true, "enabled": true, "auth": "none", "port": 5901, "host": "0.0.0.0", "channels": []}, "id": "libvirt-325"}
 ...
  
   Verification passed.

Comment 6 zhe peng 2012-10-25 08:28:10 UTC
Created attachment 633223 [details]
full libvirtd log

Comment 7 errata-xmlrpc 2013-02-21 07:10:31 UTC
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-2013-0276.html