Maybe you detach disk too fast.When you detach disk,the guest os maybe has not loaded the hotplug modules.So it can not detect your detach event.Can you test the situation when detaching disk after guest os starting up ?
-- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/1518969 Title: Instance of QEMU doesn't unplug virtio scsi disk after device_del and drive_del commands Status in QEMU: New Bug description: device_del and drive_del commands don't cause virtio disk detaching Steps to reproduce: 1. Run instance 2. Attach virtio scsi disk 3. Reboot instance 4. Immediately after reboot detach disk with QEMU commands: device_del drive_del Expected result: Disk should be detached anyway Actual: Domain info contains attached disk even after waiting long period of time(5 min in my case). Additional info: QEMU process: root 29010 42.6 1.9 562036 61272 ? Rl 03:42 0:01 /usr/bin/qemu-system-x86_64 -name instance-00000069 -S -machine pc-i440fx-trusty,accel=tcg,usb=off -m 64 -realtime mlock=off -smp 1,sockets=1,cores=1,threads=1 -uuid d2418536-2547-4740-96b5-0d4f1d74b9f3 -smbios type=1,manufacturer=OpenStack Foundation,product=OpenStack Nova,version=13.0.0,serial=1fd8f69a-909b-4ed1-aae9-4fc9318fc622,uuid=d2418536-2547-4740-96b5-0d4f1d74b9f3,family=Virtual Machine -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/instance-00000069.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown -boot strict=on -kernel /opt/stack/data/nova/instances/d2418536-2547-4740-96b5-0d4f1d74b9f3/kernel -initrd /opt/stack/data/nova/instances/d2418536-2547-4740-96b5-0d4f1d74b9f3/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/d2418536-2547-4740-96b5-0d4f1d74b9f3/disk,if=none,id=drive-virtio-disk0,format=qcow2,cache=none -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x4,drive=drive-virtio-disk0,id=virtio-disk0,bootindex=1 -drive file=/opt/stack/data/nova/instances/d2418536-2547-4740-96b5-0d4f1d74b9f3/disk.config,if=none,id=drive-ide0-1-1,readonly=on,format=raw,cache=none -device ide-cd,bus=ide.1,unit=1,drive=drive-ide0-1-1,id=ide0-1-1 -netdev tap,fd=18,id=hostnet0 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=fa:16:3e:1a:10:3d,bus=pci.0,addr=0x3 -chardev file,id=charserial0,path=/opt/stack/data/nova/instances/d2418536-2547-4740-96b5-0d4f1d74b9f3/console.log -device isa-serial,chardev=charserial0,id=serial0 -chardev pty,id=charserial1 -device isa-serial,chardev=charserial1,id=serial1 -vnc 127.0.0.1:1 -k en-us -device cirrus-vga,id=video0,bus=pci.0,addr=0x2 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5 QEMU version: qemu-system-x86_64 --version QEMU emulator version 2.0.0 (Debian 2.0.0+dfsg-2ubuntu1.19), Copyright (c) 2003-2008 Fabrice Bellard To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/1518969/+subscriptions
