Red Hat Bugzilla – Bug 525362
VM cannot boot from the backing disk img
Last modified: 2009-09-24 03:25:04 EDT
Description of problem:
I have a kvm-guest machine using the qcow2 format image and it works fine.
Now I want to creat a new image to take the place of this old image,use the old disk image as as a readonly 'backing store'.
I run the command "virsh vol-create default new.xml" with the following new.xml:
And then I repoint this kvm-guest to the new disk image,but can't the start the guest with the error " internal error unable to start guest: qemu: could not open disk image /var/lib/libvirt/images/new1.img "
By the way, the command "virsh vol-create --pool default new.xml" in the Test_Day:2009-09-17_Virtualization_qcow2 doesn't work with the error "'vol-create' need <file> option",so I remove --pool and it works.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.virsh vol-create default new.xml
2.virsh edit myguest_name,repoint the disk image to the new one
3.start the guest.
Can not start the guest with the error "internal error unable to start guest: qemu: could not open disk image /var/lib/libvirt/images/new1.img "
Can start the guest
Jerry, can you provide the related software versions and how reproducible of this issue?
the related software version as follow:
Thanks for the report
I'm pretty sure this is bug #497131
Try again after 'setenforce 0' - if it still doesn't work, then please re-open
*** This bug has been marked as a duplicate of bug 497131 ***