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 951525 - Executing "system_reset" command in qmp, two RESET events are reported
Summary: Executing "system_reset" command in qmp, two RESET events are reported
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm
Version: 7.0
Hardware: Unspecified
OS: Unspecified
low
medium
Target Milestone: rc
: ---
Assignee: Laszlo Ersek
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-04-12 11:41 UTC by xhan
Modified: 2014-06-18 08:08 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-01-16 17:23:29 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description xhan 2013-04-12 11:41:31 UTC 
Description of problem:

Executing "system_reset" command in qmp, two RESET events are reported.

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

qemu-kvm-1.4.0-2.el7.x86_64


How reproducible:
100%

Steps to Reproduce:
1. boot up a vm.
/root/autotest/autotest-devel/client/tests/kvm/qemu -monitor stdio -enable-kvm -chardev socket,id=seabioslog_id_20130410-113920-4uZvymfO,path=/tmp/seabios-20130410-113920-4uZvymfO,server,nowait -device isa-debugcon,chardev=seabioslog_id_20130410-113920-4uZvymfO,iobase=0x402 -device ich9-usb-uhci1,id=usb1,bus=pci.0,addr=0x4 -drive file=./RHEL-Server-6.4-64-virtio.qcow2,if=none,id=drive-virtio-disk1,media=disk,cache=unsafe,snapshot=off,format=qcow2,aio=native -device virtio-blk-pci,bus=pci.0,addr=0x5,drive=drive-virtio-disk1,id=virtio-disk1 -device virtio-net-pci,netdev=idiJsfiK,mac=9a:d9:da:db:dc:dd,bus=pci.0,addr=0x3,id=idbJLUxv -netdev tap,id=idiJsfiK,vhost=on -m 4096 -smp 4,maxcpus=4,cores=2,threads=1,sockets=2 -cpu SandyBridge -M pc -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1 -vnc :0 -vga cirrus -rtc base=utc,clock=host,driftfix=slew -qmp tcp:0:5234,server,nowait -drive file=./Windows8-ReleasePreview-64bit-English.iso,if=none,id=drive-virtio-disk2,media=cdrom,readonly=on,format=raw -device ide-drive,bus=ide.1,unit=0,drive=drive-virtio-disk2,id=virtio-disk2

2. telnet host_ip 5234
3.
{"execute":"qmp_capabilities"}
{"return": {}}
{ "execute": "system_reset" }
{"return": {}}
{"timestamp": {"seconds": 1365752070, "microseconds": 703225}, "event": "RESET"}
{"timestamp": {"seconds": 1365752070, "microseconds": 783227}, "event": "RESET"}


Actual results:

Two pieces of RESET event are reported.

Expected results:
One piece of RESET event is reported.


Additional info:

Host kernel
3.9.0-0.rc6.50.el7.x86_64
Comment 2 Hai Huang 2013-04-16 18:54:30 UTC 
Please feel free to reassign this BZ as appropriate. Thanks.
Comment 3 Luiz Capitulino 2013-04-17 12:20:39 UTC 
This is already fixed upstream, will backport the fix shortly.
Comment 4 Luiz Capitulino 2013-04-18 20:09:16 UTC 
It turns out that we'll rebase qemu to 1.5, so there's no need to backport the fixes. Moving this to ON_QA.
Comment 5 Luiz Capitulino 2013-04-19 17:53:23 UTC 
I was wrong about this, it turns out it still exists upstream. Moving back to NEW.
Comment 6 Ademar Reis 2013-11-28 17:11:21 UTC 
QMP usage is not going to be supported in RHEL7 and this bug is harmless when using libvirt. Closing as WONTFIX.
Comment 7 Sibiao Luo 2014-01-16 10:15:48 UTC 
(In reply to Ademar Reis from comment #6)
> QMP usage is not going to be supported in RHEL7 and this bug is harmless
> when using libvirt. Closing as WONTFIX.
Why QMP not be support in rhel7? The libvirt must call for from QMP monitor, maybe you mistaked it to HMP, so reopen it to fix it. Please correct me if any mistake.

Best Regards,
sluo
Comment 8 Laszlo Ersek 2014-01-16 15:29:43 UTC 
Hi Sluo,

I can only repeat Ademar's comment 6:
- *direct* QMP usage (ie. talking directly to the qemu monitor over QMP) is not supported in RHEL-7,
- libvirt of course talks to the qemu monitor, using QMP, and that is supported. But libvirt can already handle the duplicate RESET event (this is what Ademar meant with "harmless".

Please consider re-closing. Thanks.
Comment 9 Ademar Reis 2014-01-16 17:23:29 UTC 
(In reply to Laszlo Ersek from comment #8)
> Hi Sluo,
> 
> I can only repeat Ademar's comment 6:
> - *direct* QMP usage (ie. talking directly to the qemu monitor over QMP) is
> not supported in RHEL-7,
> - libvirt of course talks to the qemu monitor, using QMP, and that is
> supported. But libvirt can already handle the duplicate RESET event (this is
> what Ademar meant with "harmless".
> 

Yep, sorry for not being clear before and thanks Laszlo for explaining.
Note You need to log in before you can comment on or make changes to this bug.