Re: [Libguestfs] How to use libguestfs access LVM as non-root user?
On Fri, May 31, 2013 at 06:39:53PM +0800, Qiu Yu wrote:
[00098ms] /usr/libexec/qemu-kvm \
-global virtio-blk-pci.scsi=off \
-drive file=/dev/xenvg/123,cache=off,format=qcow2,if=virtio \
-nodefconfig \
-enable-kvm \
-nodefaults \
-nographic \
-m 500 \
-no-reboot \
-device virtio-serial \
-serial stdio \
-chardev socket,path=/tmp/libguestfssaaw6T/guestfsd.sock,id=channel0 \
-device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \
-kernel /var/tmp/.guestfs-501/kernel.30285 \
-initrd /var/tmp/.guestfs-501/initrd.30285 \
-append 'panic=1 console=ttyS0 udevtimeout=300 no_timer_check acpi=off
printk.time=1 cgroup_disable=memory selinux=0 guestfs_verbose=1
TERM=screen-bce ' \
-drive
file=/var/tmp/.guestfs-501/root.30285,snapshot=on,if=virtio,cache=unsafeqemu-kvm:
-drive file=/dev/xenvg/123,cache=off,format=qcow2,if=virtio: could not open
disk image /dev/xenvg/123: Invalid argument
I'm assuming it's because the format is wrong (ie. not qcow2 but raw).
The error message is a little bit obscure and could be better, but we
do rely on qemu printing something sensible instead of just "Invalid
argument".
What happens if you do:
file -bsL /dev/xenvg/123
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into KVM guests.
http://libguestfs.org/virt-v2v