Hi Stefan, I'm assigning this bug to you to get your input about which package I need to target it to. It's invalid (I believe) for qemu-kvm. We need server cloud guests to have pci_hotplog auto-loaded at boot (to avoid this bug). Should I assign to package linux for that?
-- You received this bug notification because you are a member of qemu- devel-ml, which is subscribed to QEMU. https://bugs.launchpad.net/bugs/897750 Title: libvirt/kvm problem with disk attach/detach/reattach on running virt Status in QEMU: New Status in “qemu-kvm” package in Ubuntu: Confirmed Bug description: Release: Ubuntu 11.10 (Oneiric) libvirt-bin: 0.9.2-4ubuntu15.1 qemu-kvm: 0.14.1+noroms-0ubuntu6 Summary: With a running KVM virt, performing an 'attach-disk', then a 'detach-disk', then another 'attach-disk' in an attempt to reattach the volume at the same point on the virt, fails, with the qemu reporting back to libvirt a 'Duplicate ID' error. Expected behavior: The 2nd invocation of 'attach-disk' should have succeeded Actual behavior: Duplicate ID error reported I believe this is most likely a qemu-kvm issue, as the DOM kvm spits back at libvirt after the 'detach-disk' does not show the just-detached disk. There is some kind of registry/lookup for devices in qemu-kvm and for whatever reason, the entry for the disk does not get removed when it is detached from the virt. Specifically, the error gets reported at the 2nd attach-disk attempt from: qemu-option.c:qemu_opts_create:697 684 QemuOpts *qemu_opts_create(QemuOptsList *list, const char *id, int fail_if_exists) 685 { 686 QemuOpts *opts = NULL; 687 688 if (id) { 689 if (!id_wellformed(id)) { 690 qerror_report(QERR_INVALID_PARAMETER_VALUE, "id", "an identifier"); 691 error_printf_unless_qmp("Identifiers consist of letters, digits, '-', '.', '_', starting with a letter.\n"); 692 return NULL; 693 } 694 opts = qemu_opts_find(list, id); 695 if (opts != NULL) { 696 if (fail_if_exists) { 697 qerror_report(QERR_DUPLICATE_ID, id, list->name); <<<< ====== HERE =========== 698 return NULL; 699 } else { 700 return opts; 701 } 702 } 703 } 704 opts = qemu_mallocz(sizeof(*opts)); 705 if (id) { 706 opts->id = qemu_strdup(id); 707 } 708 opts->list = list; 709 loc_save(&opts->loc); 710 QTAILQ_INIT(&opts->head); 711 QTAILQ_INSERT_TAIL(&list->head, opts, next); 712 return opts; 713 } ======================================== Output of my attach/detach/attach ======================================== virsh # attach-disk base1 /var/lib/libvirt/images/extrastorage.img vdb Disk attached successfully virsh # dumpxml base1 <domain type='kvm' id='2'> <name>base1</name> <uuid>9ebebe7f-7dfa-4735-a80c-c19ebe4e1459</uuid> <memory>1048576</memory> <currentMemory>1048576</currentMemory> <vcpu>2</vcpu> <os> <type arch='x86_64' machine='pc-0.14'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <cpu match='exact'> <model>Opteron_G3</model> <vendor>AMD</vendor> <feature policy='require' name='skinit'/> <feature policy='require' name='vme'/> <feature policy='require' name='mmxext'/> <feature policy='require' name='fxsr_opt'/> <feature policy='require' name='cr8legacy'/> <feature policy='require' name='ht'/> <feature policy='require' name='3dnowprefetch'/> <feature policy='require' name='3dnowext'/> <feature policy='require' name='wdt'/> <feature policy='require' name='extapic'/> <feature policy='require' name='pdpe1gb'/> <feature policy='require' name='osvw'/> <feature policy='require' name='cmp_legacy'/> <feature policy='require' name='3dnow'/> </cpu> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/dev/rbd1'/> <target dev='vda' bus='virtio'/> <alias name='virtio-disk0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </disk> <disk type='block' device='disk'> <driver name='qemu' type='raw'/> <source dev='/var/lib/libvirt/images/extrastorage.img'/> <target dev='vdb' bus='virtio'/> <alias name='virtio-disk1'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </disk> <controller type='ide' index='0'> <alias name='ide0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <mac address='52:54:00:a2:c1:2d'/> <source bridge='br0'/> <target dev='vnet0'/> <model type='virtio'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <source path='/dev/pts/1'/> <target port='0'/> <alias name='serial0'/> </serial> <console type='pty' tty='/dev/pts/1'> <source path='/dev/pts/1'/> <target type='serial' port='0'/> <alias name='serial0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5900' autoport='yes'/> <sound model='ich6'> <alias name='sound0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </sound> <video> <model type='cirrus' vram='9216' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <alias name='balloon0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </memballoon> </devices> <seclabel type='dynamic' model='apparmor'> <label>libvirt-9ebebe7f-7dfa-4735-a80c-c19ebe4e1459</label> <imagelabel>libvirt-9ebebe7f-7dfa-4735-a80c-c19ebe4e1459</imagelabel> </seclabel> </domain> virsh # detach-disk base1 vdb Disk detached successfully virsh # dumpxml base1 <domain type='kvm' id='2'> <name>base1</name> <uuid>9ebebe7f-7dfa-4735-a80c-c19ebe4e1459</uuid> <memory>1048576</memory> <currentMemory>1048576</currentMemory> <vcpu>2</vcpu> <os> <type arch='x86_64' machine='pc-0.14'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <cpu match='exact'> <model>Opteron_G3</model> <vendor>AMD</vendor> <feature policy='require' name='skinit'/> <feature policy='require' name='vme'/> <feature policy='require' name='mmxext'/> <feature policy='require' name='fxsr_opt'/> <feature policy='require' name='cr8legacy'/> <feature policy='require' name='ht'/> <feature policy='require' name='3dnowprefetch'/> <feature policy='require' name='3dnowext'/> <feature policy='require' name='wdt'/> <feature policy='require' name='extapic'/> <feature policy='require' name='pdpe1gb'/> <feature policy='require' name='osvw'/> <feature policy='require' name='cmp_legacy'/> <feature policy='require' name='3dnow'/> </cpu> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' type='raw'/> <source file='/dev/rbd1'/> <target dev='vda' bus='virtio'/> <alias name='virtio-disk0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </disk> <controller type='ide' index='0'> <alias name='ide0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/> </controller> <interface type='bridge'> <mac address='52:54:00:a2:c1:2d'/> <source bridge='br0'/> <target dev='vnet0'/> <model type='virtio'/> <alias name='net0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/> </interface> <serial type='pty'> <source path='/dev/pts/1'/> <target port='0'/> <alias name='serial0'/> </serial> <console type='pty' tty='/dev/pts/1'> <source path='/dev/pts/1'/> <target type='serial' port='0'/> <alias name='serial0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='5900' autoport='yes'/> <sound model='ich6'> <alias name='sound0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </sound> <video> <model type='cirrus' vram='9216' heads='1'/> <alias name='video0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/> </video> <memballoon model='virtio'> <alias name='balloon0'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> </memballoon> </devices> <seclabel type='dynamic' model='apparmor'> <label>libvirt-9ebebe7f-7dfa-4735-a80c-c19ebe4e1459</label> <imagelabel>libvirt-9ebebe7f-7dfa-4735-a80c-c19ebe4e1459</imagelabel> </seclabel> </domain> virsh # attach-disk base1 /var/lib/libvirt/images/extrastorage.img vdb error: Failed to attach disk error: operation failed: adding virtio-blk-pci,bus=pci.0,addr=0x8,drive=drive-virtio-disk1,id=virtio-disk1 device failed: Duplicate ID 'virtio-disk1' for device ====================================================== To manage notifications about this bug go to: https://bugs.launchpad.net/qemu/+bug/897750/+subscriptions
