Bug 1380306
| Summary: | RHSA-2016-1756 breaks migration of instances | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 7 | Reporter: | Marcel Kolaja <mkolaja> |
| Component: | qemu-kvm | Assignee: | Stefan Hajnoczi <stefanha> |
| Status: | CLOSED ERRATA | QA Contact: | huiqingding <huding> |
| Severity: | high | Docs Contact: | |
| Priority: | urgent | ||
| Version: | 7.3 | CC: | amedeo.salvati, aperotti, areis, berrange, blake.c.anderson, chayang, c.hendrickson09, cww, dasmith, eglynn, furlongm, huding, jherrman, jmelvin, juzhang, kamfonik, kchamart, knoel, lmiksik, mkolaja, moshele, qizhu, rbalakri, rbryant, sbauza, sferdjao, sgordon, srevivo, stefanha, virt-maint, vromanso |
| Target Milestone: | rc | Keywords: | Regression, ZStream |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | qemu-kvm-1.5.3-105.el7_2.9 | Doc Type: | Bug Fix |
| Doc Text: |
The fix for CVE-2016-5403 caused migrating guest instances to fail with a "Virtqueue size exceeded" error message. With this update, the value of the virtualization queue is recalculated after the migration, and the described problem no longer occurs.
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Story Points: | --- |
| Clone Of: | 1376542 | Environment: | |
| Last Closed: | 2016-11-09 17:15:17 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: | 1376542 | ||
| Bug Blocks: | |||
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Description
Marcel Kolaja
2016-09-29 09:17:01 UTC
Fix included in qemu-kvm-1.5.3-105.el7_2.9 Reproduce this bug using the following version: kernel-3.10.0-510.el7.x86_64 qemu-kvm-1.5.3-105.el7_2.8.x86_64 Reproduce steps: 1. create a 4M lv # pvcreate /dev/sdg # vgcreate testvg /dev/sdg # lvcreate -L 4M -T testvg/testlv # lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert home rhel_hp-dl380pg8-09 -wi-ao---- 212.61g root rhel_hp-dl380pg8-09 -wi-ao---- 50.00g swap rhel_hp-dl380pg8-09 -wi-ao---- 15.75g testlv testvg twi-a-tz-- 4.00m 0.00 0.88 2. create a data disk image based on the above lv # qemu-img create -f qcow2 /dev/testvg/testlv 10G 3. boot a rhel7.3 guest with the above data disk image # /usr/libexec/qemu-kvm \ -S \ -name 'rhel7.3' \ -machine pc \ -m 4096 \ -smp 4,maxcpus=4,sockets=1,cores=4,threads=1 \ -cpu SandyBridge \ -rtc base=localtime,clock=host,driftfix=slew \ -nodefaults \ -boot menu=on \ -enable-kvm \ -monitor stdio \ -drive file=/mnt/rhel7.3.raw,format=raw,id=drive_sysdisk,if=none,cache=none,aio=native,werror=stop,rerror=stop \ -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x8,drive=drive_sysdisk,bootindex=1 \ -drive if=none,cache=none,format=qcow2,file=/dev/testvg/testlv,werror=stop,id=drive-virtio-disk0 \ -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x9,drive=drive-virtio-disk0,id=virtio-disk0 \ -vga qxl \ -spice port=5900,disable-ticketing 4. on the same host, use the same command line with "-incoming tcp:0:5800", boot the rhel7.3 guest 5. inside guest # dd if=/dev/zero of=/dev/vdb oflag=direct bs=4k 6. after guest is paused with io-error, do migration (qemu) info status VM status: paused (io-error) (qemu) migrate -d tcp:0:5800 7. on host, grow the logical volume by 4 MB # lvresize -L +4M /dev/testvg/testlv 8. in destination, resume the guest (qemu)c after step8, "Virtqueue size exceeded" error from destination QEMU and qemu-kvm quits. Verify this bug using the following version: kernel-3.10.0-510.el7.x86_64 qemu-kvm-1.5.3-105.el7_2.9.x86_64 Do the above test, after step 8, destination qemu-kvm did not quit and guest can resume normally. Based on comment #6, set this bug to be verified. 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://rhn.redhat.com/errata/RHBA-2016-2678.html |