Hi list, I've ridden carefully the reported error. Seems to be some features from qcow2 format image (create with a newer version of qemu-kvm) that can't be used with qemu version shipped with centos 6.5.
To accomplish my work, I've followed a chain of conversions. I've copied the image on a guest with a newer version of qemu-kvm and converted all qcow2 image in a raw format. Then on CentOS, I've reconverted them in a qcow2 format (this time with supported features) and I've started them without problems.
At the end:
[qcow2 featured] [conversion qemu 1.7.0] -> [raw] -> [conversion with centos qemu-img] -> [qcow2 supported].
Solved.
Il 05/05/2014 12:58, Alessandro Baggi ha scritto:
Hi there, I'm new to Centos. I've installed version 6.5 x86_64. I'm coming from slackware/debian utilizzation environment. I'm trying to setup libvirt and qemu-kvm, but I have some problems.
I've different vms (2 centos, 2 slackware, 3 Debian) and I'm trying to import all of them. I want prefix that all of them was created from debian host and vdisk had bus=sata and format=qcow2.
Importing debian I've no problem with the following command:
# virt-install -n DEB -r 1024 --vcpus=2 --accelerate --os-type=linux --os-variant=debianwheezy --disk path=/path/to/deb.img,format=qcow2,bus=ide,cache=writeback --import --network=bridge:br0 --vnc -v
It starts and works fine.
Importing Centos 6.5 with the following command:
# virt-install -n CENT1 -r 1024 --vcpus=2 --os-type=linux --os-variant=rhel6 --accelerate --disk path=/path/to/cent.img,format=qcow2,bus=ide,cache=writeback --import --network=bridge:br0 --vnc -v
return an error:
Starting install... ERROR errore interno Process exited while reading console log output: char device redirected to /dev/pts/3 qemu-kvm: -drive file=/mnt/dati/qemu-system/CENTOS1/cent.img,if=none,id=drive-ide0-0-0,format=qcow2,cache=writeback: 'drive-ide0-0-0' uses a qcow2 feature which is not supported by this qemu version: QCOW version 3 qemu-kvm: -drive file=/mnt/dati/qemu-system/CENTOS1/cent.img,if=none,id=drive-ide0-0-0,format=qcow2,cache=writeback: could not open disk image /mnt/dati/qemu-system/CENTOS1/cent.img: Operation not supported
Domain installation does not appear to have been successful.
I've tried also to remove disk options and set to virtio,scsi. It starts but says "no bootable disk".
The same happens with slackware 14.1 without --os-type and --os-variant.
Always, trying delete cent.img and recreate it, all works with the same option (but is not so good, because I must reinstall all).
On my new centos installation I have qemu-kvm-0.12.1.2, on the last Slackware system I had qemu-1.7.0 and on Debian 1.1.2+dfsg-6+deb7u2.
I've also tried to reimport them on another system with Slackware and have no problem.
Maybe there is a problem with version of qemu-kvm tools or some problem with img. It's possible?
I can't get the real problem. Can someone point me in the right direction?
Thanks in advance.