virt October 2011

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24 participants
12 discussions

overlay image on centos 6 do not work
by Kai Krueger 04 Oct '11

04 Oct '11

Hello, I have some problems with overlay images on a host running centos 6.0 * I have 2 physical hosts, one running centos 5.5, the other running centos 6.0 * I created a virtual linux host with a raw file image centos6.img I can start this vm on both machines. * then I created an overlay of the file image with qemu-img create -b centos6.img -f qcow2 centos6.ovl when I start the VM from the ovelay on the centos6 machine I get: --- Booting from Hard Disk... Boot failed: not a bootable disk No bootable device --- When booting from the raw-image and adding the overlay as second disk I see the following: ========== cut here ========== fdisk -l Disk /dev/vda: 8598 MB, 8598323200 bytes 255 heads, 63 sectors/track, 1045 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x000bb12f Device Boot Start End Blocks Id System /dev/vda1 * 1 1046 8395776 83 Linux Disk /dev/vdb: 0 MB, 262144 bytes 16 heads, 63 sectors/track, 0 cylinders Units = cylinders of 1008 * 512 = 516096 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/vdb doesn't contain a valid partition table ========== cut here ========== As one can see, the overlay image does not have any partition table. Starting the vm with exactly these images (per nfs-mount) on the centos-5.5 host works properly. Is my problem an known bug or is it an old feature that has been removed? Best regards, Kai Krueger ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

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Strange problem with guest having more than 3 virtual interfaces.
by Veli-Pekka Kestilä 02 Oct '11

02 Oct '11

Hi, I have 6 DomU's with 4-virtual interfaces and 1 DomU with only one. When starting the DomU's in order where the domain with only one interface is started last it refuses to start with following error. If I start it first there is no problem starting them all. ---Error--- [2011-10-02 18:37:33 xend.XendDomainInfo 6728] DEBUG (XendDomainInfo:1335) XendDomainInfo.handleShutdownWatch [2011-10-02 18:37:33 xend 6728] DEBUG (DevController:179) Waiting for devices vif. [2011-10-02 18:37:33 xend 6728] DEBUG (DevController:184) Waiting for 0. [2011-10-02 18:37:33 xend 6728] DEBUG (DevController:571) hotplugStatusCallback /local/domain/0/backend/vif/8/0/hotplug-status. [2011-10-02 18:39:13 xend 6728] DEBUG (DevController:94) Lock released [2011-10-02 18:39:13 xend 6728] DEBUG (DevController:96) Lock not acquired, cannot release [2011-10-02 18:39:13 xend 6728] ERROR (SrvBase:88) Request wait_for_devices failed. Traceback (most recent call last): File "/usr/lib64/python2.4/site-packages/xen/web/SrvBase.py", line 85, in perform return op_method(op, req) File "/usr/lib64/python2.4/site-packages/xen/xend/server/SrvDomain.py", line 72, in op_wait_for_devices return self.dom.waitForDevices() File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 2583, in waitForDevices self.waitForDevices_(c) File "/usr/lib64/python2.4/site-packages/xen/xend/XendDomainInfo.py", line 1563, in waitForDevices_ return self.getDeviceController(deviceClass).waitForDevices() File "/usr/lib64/python2.4/site-packages/xen/xend/server/DevController.py", line 181, in waitForDevices return map(self.waitForDevice, self.deviceIDs()) File "/usr/lib64/python2.4/site-packages/xen/xend/server/DevController.py", line 192, in waitForDevice raise VmError("Device %s (%s) could not be connected. " VmError: Device 0 (vif) could not be connected. Hotplug scripts not working. [2011-10-02 18:39:13 xend.XendDomainInfo 6728] DEBUG (XendDomainInfo:2387) XendDomainInfo.destroy: domid=8 [2011-10-02 18:39:13 xend 6728] DEBUG (DevController:94) Lock released [2011-10-02 18:39:13 xend 6728] DEBUG (DevController:94) Lock released [2011-10-02 18:39:13 xend.XendDomainInfo 6728] INFO (XendDomainInfo:2528) Dev 51712 still active, looping... [2011-10-02 18:39:14 xend.XendDomainInfo 6728] INFO (XendDomainInfo:2528) Dev 51712 still active, looping... [2011-10-02 18:39:14 xend.XendDomainInfo 6728] INFO (XendDomainInfo:2528) Dev 51712 still active, looping... ---Error--- Greetings, Veli-Pekka Kestilä

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virt October 2011