I have seen a bunch of reports about this assertion error (on source QEMU). [At least I recall Greg Kurz mentioning this a week or so ago on #qemu, OFTC.]
I just noticed this crash in upstream OpenStack CI environment. This seems to occur (only intermittently, though) during live migration without shared-storage. [I've attached the complete source and destination QEMU command-line in a separate plain text file.] But here are the errors from source and destination QEMU: Source QEMU: ----------------------------------------------------------------------- [...] 2017-04-21 13:54:08.505+0000: initiating migration qemu-system-x86_64: /build/qemu-5OJ39u/qemu-2.8+dfsg/block/io.c:1514: bdrv_co_pwritev: Assertion `!(bs->open_flags & BDRV_O_INACTIVE)' failed. 2017-04-21 13:54:08.791+0000: shutting down, reason=crashed ----------------------------------------------------------------------- Destination QEMU: ----------------------------------------------------------------------- [...] /build/qemu-5OJ39u/qemu-2.8+dfsg/nbd/server.c:nbd_receive_request():L710: read failed 2017-04-21 13:54:08.792+0000: shutting down, reason=failed 2017-04-21T13:54:08.793259Z qemu-system-x86_64: terminating on signal 15 from pid 12160 (/usr/sbin/libvirtd) ----------------------------------------------------------------------- Any hints as how to how to deal with this in QEMU 2.8? FWIW, the upstream OpenStack CI only very recently moved to QEMU 2.8, so it is unlikely that the CI env will move to the just-released 2.9 anytime soon. (But there's work in progress to create a CI job that tests with QEMU 2.9.) -- /kashyap
Source QEMU: ----------------------------------------------------------------------- 2017-04-21 13:54:03.632+0000: starting up libvirt version: 2.5.0, package: 3ubuntu5~cloud0 (Openstack Ubuntu Testing Bot <openstack-testing-...@ubuntu.com> Tue, 21 Mar 2017 21:54:49 +0000), qemu version: 2.8.0(Debian 1:2.8+dfsg-3ubuntu2~cloud0), hostname: ubuntu-xenial-2-node-osic-cloud1-s3500-8527282-539390 LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-system-x86_64 -name guest=instance-00000001,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-1-instance-00000001/master-key.aes -machine pc-i440fx-zesty,accel=tcg,usb=off,dump-guest-core=off -m 64 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 9bf9f268-5242-4b1d-8fe6-ee348b2b8d3e -smbios 'type=1,manufacturer=OpenStack Foundation,product=OpenStack Nova,version=15.0.4,serial=84d813aa-3d3e-4250-bcac-cb0c61adf1ef,uuid=9bf9f268-5242-4b1d-8fe6-ee348b2b8d3e,family=Virtual Machine' -display none -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-1-instance-00000001/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -kernel /opt/stack/data/nova/instances/9bf9f268-5242-4b1d-8fe6-ee348b2b8d3e/kernel -initrd /opt/stack/data/nova/instances/9bf9f268-5242-4b1d-8fe6-ee348b2b8d3e/ramdisk -append 'root=/dev/vda console=tty0 console=ttyS0 no_timer_check' -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/opt/stack/data/nova/instances/9bf9f268-5242-4b1d-8fe6-ee348b2b8d3e/disk,format=qcow2,if=none,id=drive-virtio-disk0,cache=none -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x2,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -add-fd set=0,fd=29 -chardev pty,id=charserial0,logfile=/dev/fdset/0,logappend=on -device isa-serial,chardev=charserial0,id=serial0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 -msg timestamp=on char device redirected to /dev/pts/0 (label charserial0) warning: TCG doesn't support requested feature: CPUID.01H:ECX.vmx [bit 5] 2017-04-21 13:54:08.505+0000: initiating migration qemu-system-x86_64: /build/qemu-5OJ39u/qemu-2.8+dfsg/block/io.c:1514: bdrv_co_pwritev: Assertion `!(bs->open_flags & BDRV_O_INACTIVE)' failed. 2017-04-21 13:54:08.791+0000: shutting down, reason=crashed ----------------------------------------------------------------------- Destination QEMU: ----------------------------------------------------------------------- 2017-04-21 13:54:08.142+0000: starting up libvirt version: 2.5.0, package: 3ubuntu5~cloud0 (Openstack Ubuntu Testing Bot <openstack-testing-...@ubuntu.com> Tue, 21 Mar 2017 21:54:49 +0000), qemu version: 2.8.0(Debian 1:2.8+dfsg-3ubuntu2~cloud0), hostname: ubuntu-xenial-2-node-osic-cloud1-s3500-8527282 LC_ALL=C PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin QEMU_AUDIO_DRV=none /usr/bin/qemu-system-x86_64 -name guest=instance-00000001,debug-threads=on -S -object secret,id=masterKey0,format=raw,file=/var/lib/libvirt/qemu/domain-2-instance-00000001/master-key.aes -machine pc-i440fx-zesty,accel=tcg,usb=off,dump-guest-core=off -m 64 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid 9bf9f268-5242-4b1d-8fe6-ee348b2b8d3e -smbios 'type=1,manufacturer=OpenStack Foundation,product=OpenStack Nova,version=15.0.4,serial=84d813aa-3d3e-4250-bcac-cb0c61adf1ef,uuid=9bf9f268-5242-4b1d-8fe6-ee348b2b8d3e,family=Virtual Machine' -display none -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/domain-2-instance-00000001/monitor.sock,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -kernel /opt/stack/data/nova/instances/9bf9f268-5242-4b1d-8fe6-ee348b2b8d3e/kernel -initrd /opt/stack/data/nova/instances/9bf9f268-5242-4b1d-8fe6-ee348b2b8d3e/ramdisk -append 'root=/dev/vda console=tty0 console=ttyS0 no_timer_check' -device piix3-usb-uhci,id=usb,bus=pci.0,addr=0x1.0x2 -drive file=/opt/stack/data/nova/instances/9bf9f268-5242-4b1d-8fe6-ee348b2b8d3e/disk,format=qcow2,if=none,id=drive-virtio-disk0,cache=none -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x2,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -add-fd set=0,fd=35 -chardev pty,id=charserial0,logfile=/dev/fdset/0,logappend=on -device isa-serial,chardev=charserial0,id=serial0 -incoming defer -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 -msg timestamp=on char device redirected to /dev/pts/1 (label charserial0) warning: TCG doesn't support requested feature: CPUID.01H:ECX.vmx [bit 5] /build/qemu-5OJ39u/qemu-2.8+dfsg/nbd/server.c:nbd_receive_request():L710: read failed 2017-04-21 13:54:08.792+0000: shutting down, reason=failed 2017-04-21T13:54:08.793259Z qemu-system-x86_64: terminating on signal 15 from pid 12160 (/usr/sbin/libvirtd) -----------------------------------------------------------------------
