Bug 807898
| Summary: | guest quit or device hot-unplug during streaming fails | ||||||||
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| Product: | Red Hat Enterprise Linux 6 | Reporter: | Shaolong Hu <shu> | ||||||
| Component: | qemu-kvm | Assignee: | Paolo Bonzini <pbonzini> | ||||||
| Status: | CLOSED ERRATA | QA Contact: | Virtualization Bugs <virt-bugs> | ||||||
| Severity: | medium | Docs Contact: | |||||||
| Priority: | medium | ||||||||
| Version: | 6.3 | CC: | acathrow, bsarathy, dyasny, juzhang, michen, minovotn, mkenneth, pbonzini, tburke, virt-maint, wdai | ||||||
| Target Milestone: | rc | Keywords: | Reopened | ||||||
| Target Release: | --- | ||||||||
| Hardware: | Unspecified | ||||||||
| OS: | Unspecified | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | qemu-kvm-0.12.1.2-2.274.el6 | Doc Type: | Bug Fix | ||||||
| Doc Text: |
No documentation needed.
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Story Points: | --- | ||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2012-06-20 11:45:45 UTC | Type: | --- | ||||||
| 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: | 806280 | ||||||||
| Attachments: |
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Description
Shaolong Hu
2012-03-29 05:21:10 UTC
Does s4 work 100% reliable w/o streaming? Same question to streaming w/o s4 Let's close it as a duplicate of # 807894 for the time being *** This bug has been marked as a duplicate of bug 807894 *** (In reply to comment #2) > Does s4 work 100% reliable w/o streaming? Same question to streaming w/o s4 > Let's close it as a duplicate of # 807894 for the time being > > *** This bug has been marked as a duplicate of bug 807894 *** Yes, s4 w/o streaming works fine(try 2 times, not sure 100% works), after s4, qemu-kvm quits, start qemu-kvm again, guest resumes from s4 correctly. This is related to shutdown while streaming (bug 807894 comment 9). The following works: 1) start qemu-kvm with -no-shutdown 2) snapshot_blkdev virtio0 /home/pbonzini/snap.qcow2 qcow2 3) block_stream virtio0 4) ... echo disk > /sys/power/state when it finishes: 5) block_job_cancel virtio0 6) quit 7) reboot with snap.qcow2 This happens if streaming does an iteration while qcow2_cache_flush runs. It can be fixed by adding a proper qemu_aio_wait. Submitting patch upstream for comments. Created attachment 573721 [details]
patch to fix the bug, RHEL version
device_del also needs to be tested. (In reply to comment #7) > device_del also needs to be tested. sure, we have a case covering it. *** Bug 808004 has been marked as a duplicate of this bug. *** Reproduced this issue with steps and environment as follows: # uname -r; rpm -q qemu-kvm 2.6.32-262.el6.x86_64 qemu-kvm-0.12.1.2-2.267.el6ev.x86_64 1.boot guest 2.in qemu monitor: (qemu) snapshot_blkdev drive-virtio-disk0 /root/sn1 qcow2 s4 fails to end, guest hangs.boot guest with sn1,guest boots as normal instead of resuming from s4. Verified this issue with steps and environment as follows: # uname -r ;rpm -q qemu-kvm-rhev 2.6.32-262.el6.x86_64 qemu-kvm-rhev-0.12.1.2-2.278.el6.x86_64 1. boot guest 2.in qemu monitor: (qemu) snapshot_blkdev drive-virtio-disk0 /root/sn1 qcow2 qemu-kvm quit normally. boot guest with sn1,guest resumes from s4 . 3.boot guest with a datadisk /usr/libexec/qemu-kvm -enable-kvm -M rhel6.3.0 -m 4G -name rhel6.3-64 -rtc base=utc,clock=host,driftfix=slew -no-kvm-pit-reinjection -uuid 3f2ea5cd-3d29-48ff-aab2-23df1b6ae213 -drive file=/home/rhel6.3-64.qcow2,cache=none,if=none,rerror=stop,werror=stop,id=drive-virtio-disk0,format=qcow2 -device virtio-blk-pci,drive=drive-virtio-disk0,id=device-virtio-disk0 -netdev tap,script=/etc/qemu-ifup-switch,id=netdev0 -device virtio-net-pci,netdev=netdev0,id=device-net0 -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 -smp 4 -qmp tcp:0:5555,server,nowait -chardev socket,id=qmp_monitor_id_qmpmonitor1,path=/tmp/qmp,server,nowait -mon chardev=qmp_monitor_id_qmpmonitor1,mode=control -drive file=/home/datadisk.qcow2,cache=none,if=none,rerror=stop,werror=stop,id=disk1,format=qcow2 -device virtio-blk-pci,drive=disk1,id=datadisk1 4.in qemu monitor: (qemu) snapshot_blkdev disk1 /root/sn2 qcow2 (qemu) block-stream disk1 (qemu) device_del datadisk1 block-job was canceled , and boot guest with sn2 works well. So, this bug has been fixed.
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
New Contents:
NEEDINFO
New feature in 6.3, no documentation needed.
Technical note updated. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
Diffed Contents:
@@ -1 +1 @@
-NEEDINFO+No documentation needed.
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/RHBA-2012-0746.html |