Bug 1447551

Summary:	qemu hang when do block_resize guest disk during crystal running
Product:	Red Hat Enterprise Linux 7	Reporter:	lijin <lijin>
Component:	qemu-kvm-rhev	Assignee:	John Snow <jsnow>
Status:	CLOSED ERRATA	QA Contact:	CongLi <coli>
Severity:	high	Docs Contact:
Priority:	high
Version:	7.4	CC:	aliang, chayang, coli, juzhang, knoel, michen, virt-maint
Target Milestone:	rc	Keywords:	Regression
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	qemu-kvm-rhev-2.9.0-6.el7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2017-08-02 04:38:29 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:

Description lijin 2017-05-03 07:40:09 UTC

Description of problem:


Version-Release number of selected component (if applicable):
qemu-kvm-rhev-10:2.9.0-2.el7
kernel-3.10.0-661.el7.x86_64
virtio-win-1.9.0-3.el7.noarch&virtio-win-prewhql-136
seabios-1.10.2-2.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.boot guest with virtio-blk-pci device:
/usr/libexec/qemu-kvm \
  -M pc \
  -cpu host \
  -enable-kvm \
  -m 2G \
  -smp 2 \
  -nodefconfig \
  -rtc base=localtime,driftfix=slew \
  -drive file=virtio-win-prewhql-136.iso,if=none,media=cdrom,id=drive-ide0-1-0,readonly=on,format=raw \
  -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 \
  -object iothread,id=thread0 \
  -drive file=win8-32-iso.raw,if=none,serial=virtioblk1,format=raw,cache=none,werror=stop,rerror=stop,id=drive-virtio-disk0,aio=native \
  -device virtio-blk-pci,scsi=off,iothread=thread0,drive=drive-virtio-disk0,id=virtio-disk0,logical_block_size=512,physical_block_size=4096 \
  -netdev tap,downscript=/etc/qemu-ifdown,script=/etc/qemu-ifup,id=hostnet0 \
  -device e1000,netdev=hostnet0,id=net0,mac=00:52:54:46:f0:ee \
  -device piix3-usb-uhci,id=usb \
  -device usb-tablet,id=tablet0 \
  -vnc 0.0.0.0:0 \
  -k en-us \
  -vga std \
  -qmp tcp:0:4444,server,nowait \
  -cdrom en_windows_8_enterprise_x86_dvd_917587.iso \
  -boot menu=on \
  -monitor stdio \
  -fda virtio-win-prewhql-136.vfd \

2.run CrystalDiskMark on system disk

3.during crystal running,enlarge system disk:
(qemu) block_resize drive-virtio-disk0 65G


Actual results:
qemu hang 

Expected results:
disk can be enlarged correctly,qemu should not hang

Additional info:
1.can reproduce with qemu-kvm-rhev-2.8.0-6.el7.x86_64.rpm
2.can NOT reproduce with rhel7.3 released version:qemu-kvm-rhev-2.6.0-27.el7.x86_64.rpm

Comment 2 lijin 2017-05-03 08:40:39 UTC

try with data disk,hit the same issue,so change the title

Comment 4 John Snow 2017-05-10 15:27:40 UTC

Reproduced upstream at dd1559bb267becbb838de41132ef60771d183e5d

Comment 5 John Snow 2017-05-10 17:51:47 UTC

Fix posted upstream:
https://lists.nongnu.org/archive/html/qemu-devel/2017-05/msg02495.html

Comment 6 Miroslav Rezanina 2017-05-23 08:15:02 UTC

Fix included in qemu-kvm-rhev-2.9.0-6.el7

Comment 8 CongLi 2017-05-24 02:56:58 UTC

Steps are same as comment 0.

1. Reproduced this bug on qemu-kvm-rhev-2.9.0-2.el7.x86_64, qemu hang when do 'block_resize'.
(qemu) block_resize drive-virtio-disk0 65g   (kill the qemu process as it hang)
crystal.sh: line 22:  9165 Killed

2. Verified this issue on qemu-kvm-rhev-2.9.0-6.el7.x86_64, qemu and guest work well.
(qemu) block_resize drive-virtio-disk0 65g
(qemu) 
(qemu) 
(qemu) 
(qemu) info status
VM status: running


Thanks.

Comment 10 errata-xmlrpc 2017-08-02 04:38:29 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.

https://access.redhat.com/errata/RHSA-2017:2392