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Bug 1081326 - qcow2 image corrupted after a migration loop
Summary: qcow2 image corrupted after a migration loop
Keywords:
Status: CLOSED DUPLICATE of bug 1048575
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm
Version: 7.0
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: rc
: ---
Assignee: Kevin Wolf
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-03-27 03:08 UTC by CongLi
Modified: 2014-04-01 15:39 UTC (History)
15 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-04-01 15:39:53 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description CongLi 2014-03-27 03:08:06 UTC 
Description of problem:
qcow2 image corrupted after a migration loop

According to https://bugzilla.redhat.com/show_bug.cgi?id=1052093#c17, report this bug.

I have run a migration test loop using autotest. 

1. At the beginning of the test, the images has no error.

2. After some cases running, met warning 'Leaked clusters were noticed during image check. No data integrity problem was found though.'.

3. Run more cases, the image is corrupted.
01/14 14:23:37 ERROR|qemu_stora:0431| [stderr] ERROR cluster 105675 refcount=0 reference=1
01/14 14:23:37 ERROR|qemu_stora:0431| [stderr] ERROR cluster 105676 refcount=0 reference=1
01/14 14:23:37 ERROR|qemu_stora:0431| [stderr] ERROR cluster 105677 refcount=0 reference=1
01/14 14:23:37 ERROR|qemu_stora:0431| [stderr] ERROR OFLAG_COPIED data cluster: l2_entry=8000000181b80000 refcount=0
01/14 14:23:37 ERROR|qemu_stora:0431| [stderr] ERROR OFLAG_COPIED data cluster: l2_entry=8000000181b90000 refcount=0
01/14 14:23:37 ERROR|qemu_stora:0431| [stderr] ERROR OFLAG_COPIED data cluster: l2_entry=8000000181ba0000 refcount=0
01/14 14:23:37 ERROR|qemu_stora:0431| [stderr] ERROR OFLAG_COPIED data cluster: l2_entry=8000000181bb0000 refcount=0

Version-Release number of selected component (if applicable):
kernel-3.10.0-67.el7.x86_64
qemu-kvm-rhev-1.5.3-35.el7.x86_64

How reproducible:
1 / 1

Steps to Reproduce:
1. run a migration loop with autotest
2.
3.

Actual results:
image corrupted after the migration loop

Expected results:
image has no error after the migration loop

Additional info:
1. QEMU CML:
/home/staf-kvm-devel/autotest-devel/client/tests/virt/qemu/qemu \
    -S  \
    -name 'virt-tests-vm1'  \
    -sandbox off  \
    -M pc  \
    -nodefaults  \
    -vga qxl  \
    -global qxl-vga.vram_size=33554432  \
    -chardev socket,id=qmp_id_qmpmonitor1,path=/tmp/monitor-qmpmonitor1-20140114-142327-dOX77U24,server,nowait \
    -mon chardev=qmp_id_qmpmonitor1,mode=control  \
    -chardev socket,id=serial_id_serial0,path=/tmp/serial-serial0-20140114-142327-dOX77U24,server,nowait \
    -device isa-serial,chardev=serial_id_serial0  \
    -chardev socket,id=seabioslog_id_20140114-142327-dOX77U24,path=/tmp/seabios-20140114-142327-dOX77U24,server,nowait \
    -device isa-debugcon,chardev=seabioslog_id_20140114-142327-dOX77U24,iobase=0x402 \
    -device ich9-usb-uhci1,id=usb1,bus=pci.0,addr=03 \
    -drive id=drive_image1,if=none,cache=none,snapshot=off,aio=native,file=/home/staf-kvm-devel/autotest-devel/client/tests/virt/shared/data/images/RHEL-Server-7.0-64-virtio.qcow2 \
    -device virtio-blk-pci,id=image1,drive=drive_image1,bootindex=0,bus=pci.0,addr=04 \
    -device virtio-net-pci,mac=9a:bd:be:bf:c0:c1,id=idqyFAse,netdev=idSIxMtI,bus=pci.0,addr=05  \
    -netdev tap,id=idSIxMtI,vhost=on,vhostfd=23,fd=22  \
    -m 2048  \
    -smp 1,maxcpus=1,cores=1,threads=1,sockets=2  \
    -cpu 'Opteron_G3',+kvm_pv_unhalt \
    -device usb-tablet,id=usb-tablet1,bus=usb1.0,port=1  \
    -spice port=3000,password=123456,addr=0,image-compression=auto_glz,zlib-glz-wan-compression=auto,streaming-video=all,agent-mouse=on,playback-compression=on,ipv4  \
    -rtc base=utc,clock=host,driftfix=slew  \
    -boot order=cdn,once=c,menu=off  \
    -no-kvm-pit-reinjection \
    -enable-kvm
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