Much thanks, Wangpan, very helpful information. I knew our "Windows 2008" image has Virtio disk and network interface driver installed, but didn't know about PCI driver. In fact, when I opened "device manager" window, I did see under "Other deivces", "PCI devices" is tagged with a yellow exclamation sysmbol. That seems to be the unrecognised "membaloon" device.
I will ask guys making Windows images and see if I could get some good news. 2014-02-27 10:21 GMT+08:00 Wangpan <[email protected]>: > I have see this same error on my debian OS(2.6.X kernel) without acpiphp > and pci_hotplug modules, > after I insert these two modules, the re-attachment works ok. > > With Windows OS, do you have install the virtio drivers(pci and disk)? > because in my windows 7 the re-attachment works ok, too. > I thought windows 2008 has the same kernel with windows 7 (may be). > > 2014-02-27 > ------------------------------ > Wangpan > ------------------------------ > *发件人：*Zuo Changqian <[email protected]> > *发送时间：*2014-02-27 09:53 > *主题：*Re: [Openstack] [Nova] KVM Windows Guest disk hot plugging support. > *收件人：*"Zhangleiqiang"<[email protected]> > *抄送：*"[email protected]"<[email protected]> > > I have tried, it would still fail. > > Also I got something new this morning, If I first remove the device > (attached disk) inside Windows 2008, and then call detach-volume command, > the reattching will succeed. > > I think this is not a problem of Libvirt of KVM (Linux guest works > perfectly), but a problem of Windows operating system. That's why I asked > whether Windows itself support this disk hot plug in-and-out feature or > not, if it can, how. > > The following "newdisk.img" has been formatted with as a NTFS disk, and > there is some data inside. "instance-0000000d" is a Windows 2008 instance > (I reboot it before every test). > > ------------------------------------------------------------ > [root@nova02 temp]# ll > total 1048584 > -rw-r--r-- 1 root root 1073741824 Feb 27 09:19 newdisk.img > -rw-r--r-- 1 root root 120 Feb 25 16:12 newdisk.xml > > [root@nova02 temp]# cat newdisk.xml > <disk type='file' device='disk'> > <source file='/home/temp/newdisk.img'/> > <target dev='vdb' bus='virtio'/> > </disk> > [root@nova02 temp]# virsh attach-device instance-0000000d newdisk.xml > Device attached successfully > > [root@nova02 temp]# virsh detach-device instance-0000000d newdisk.xml > Device detached successfully > > [root@nova02 temp]# virsh attach-device instance-0000000d newdisk.xml > error: Failed to attach device from newdisk.xml > error: internal error unable to execute QEMU command > '__com.redhat_drive_add': Duplicate ID 'drive-virtio-disk1' for drive > ----------------------------------------------------------- > > I got same result with "virsh attach-disk" command: > > ----------------------------------------------------------- > [root@nova02 temp]# virsh attach-disk instance-0000000d > /home/temp/newdisk.img vdb > Disk attached successfully > > [root@nova02 temp]# virsh detach-disk instance-0000000d vdb > Disk detached successfully > > [root@nova02 temp]# virsh attach-disk instance-0000000d > /home/temp/newdisk.img vdb > error: Failed to attach disk > error: internal error unable to execute QEMU command > '__com.redhat_drive_add': Duplicate ID 'drive-virtio-disk1' for drive > ---------------------------------------------------------- > > > > > > 2014-02-26 17:40 GMT+08:00 Zhangleiqiang <[email protected]>: > >> Hi, Changqian: >> >> >> >> I think it’s better to try using the corresponding detach command of >> libvirt (virsh detach-disk or virsh detach-device) first, and see if the >> behavior is expected. >> >> >> >> >> >> >> >> ---------- >> >> Leiqzhang >> >> >> >> Best Regards >> >> >> >> *From:* Zuo Changqian [mailto:[email protected]] >> *Sent:* Wednesday, February 26, 2014 3:49 PM >> *To:* Gangur, Hrushikesh (R & D HP Cloud) >> *Cc:* [email protected] >> *Subject:* Re: [Openstack] [Nova] KVM Windows Guest disk hot plugging >> support. >> >> >> >> By the way, it's Havana release. >> >> We first found this problem in Ubuntu 12.04 LTS guest, after loading >> "acpiphp" kernel module at instance boot time, the problem solved. >> >> Then we tested using CentOS 6.x guest, it seems the code of "acpiphp" >> module has been integrated into Linux kernel at compilation time. Nothing >> needs to been done, it just works very well. You can freely attach and >> detach volumes when instance is running. >> >> But this does not work for Windows guest, you can attach volumes, and you >> can detach, but it seems still some information of disk remain in Windows >> guest, and you can not attach a second time. >> >> A reboot do cleanup those remained infomation, and we know this. I am >> wondering if this attach/detach can be all done when Windows guest is >> running, just like it is done in Linux guest. >> >> >> >> >> >> 2014-02-26 15:07 GMT+08:00 Gangur, Hrushikesh (R & D HP Cloud) < >> [email protected]>: >> >> I have seen this issue on Linux VMs too. A reboot of the VM instance >> helps workaround this. >> >> >> >> *From:* Zuo Changqian [mailto:[email protected]] >> *Sent:* Tuesday, February 25, 2014 10:34 PM >> *To:* [email protected] >> *Subject:* [Openstack] [Nova] KVM Windows Guest disk hot plugging >> support. >> >> >> >> Hi >> >> Currently we use Cpeh RBD as cinder volume. According to >> http://www.linux-kvm.org/page/Hotadd_pci_devices, we have Linux KVM >> guest (both CentOS 6.x and Ubuntu 12.04) support disk hot plugging, it >> works well. >> >> But there is problem with Windows 2008 guest (2003 not tested). Described >> below: >> >> 1) Launch an Windows 2008 instance (with RedHat Virtio Driver installed), >> and attach a volume (newly created with nothing inside) to it, the volume >> would be successfully attached to /dev/vdb. >> >> 2) In Windows (guest machine), format this newly added disk. After >> formatting, it will show up in "My Computer" windows. Create any file >> (readme.txt with some text in it for example) inside the new disk. Then >> deatch the volume. >> >> After about one or two minute, a message box would show up in Windows, >> saying that the device not properly removed, and the newly added disk would >> still show in "My Computer" window. But with "cinder list" command, we can >> see that the volume was successfully detached. >> >> 3) Now reattach to volume to instance, it would failed. >> >> >> >> Libvirt log shows: >> >> error : qemuMonitorJSONCheckError:357 : internal error unable to execute >> QEMU command '__com.redhat_drive_add': Duplicate ID 'drive-virtio-disk1' >> for drive >> >> I googled yesterday afternoon, didn't find useful information. Would any >> one tell me whether Windows 2003/2008 as kvm fully virtualized guest >> supports disk hot plugging and removing or not? Or any possibility I have >> got something wrong? >> >> >> Thanks for help! >> >> >> > >
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