Hi T'm trying to convert XEN virtual machine image into raw. Source file is on NFS export and destination is also on nfs export. (both exports are mounted on migration servers RW access). I'm getting permission denied. I have RW access to both exports - I can create, delete objects on both exports from migration server. But when I copy img file onto migration server local filesystem, conversion works, from local fs to nfs export. However when I tried to run guestfish against file located on NFS - I'm getting the same erro - Permission denied . [root@kvm01 export]# virt-v2v -i disk migr01.img -o local -os /tmp [ 0.0] Opening the source -i disk migr01.img [ 0.0] Creating an overlay to protect the source from being modified [ 0.0] Opening the overlay virt-v2v: error: libguestfs error: could not create appliance through libvirt. Try running qemu directly without libvirt using this environment variable: export LIBGUESTFS_BACKEND=direct Original error from libvirt: internal error: process exited while connecting to monitor: 2014-10-16T14:25:13.729270Z qemu-kvm: -drive file=/var/tmp/v2vovl60e1a0.qcow2,if=none,id=drive-scsi0-0-0-0,format=qcow2,cache=unsafe,discard=unmap: could not open disk image /var/tmp/v2vovl60e1a0.qcow2: Could not open backing file: Could not open '/mnt/xen01/export/migr01.img': Permission denied [code=1 domain=10] If reporting bugs, run virt-v2v with debugging enabled and include the complete output: virt-v2v -v -x [...] [root@kvm01 export]# -- Artur Krzywdzinski
On Thu, Oct 16, 2014 at 04:34:03PM +0200, Artur Krzywdzinski wrote:
Hi
T'm trying to convert XEN virtual machine image into raw. Source file is on NFS export and destination is also on nfs export. (both exports are mounted on migration servers RW access). I'm getting permission denied. I have RW access to both exports - I can create, delete objects on both exports from migration server. But when I copy img file onto migration server local filesystem, conversion works, from local fs to nfs export. However when I tried to run guestfish against file located on NFS - I'm getting the same erro - Permission denied .
[root@kvm01 export]# virt-v2v -i disk migr01.img -o local -os /tmp [ 0.0] Opening the source -i disk migr01.img [ 0.0] Creating an overlay to protect the source from being modified [ 0.0] Opening the overlay virt-v2v: error: libguestfs error: could not create appliance through libvirt.
Try running qemu directly without libvirt using this environment variable: export LIBGUESTFS_BACKEND=direct
Original error from libvirt: internal error: process exited while connecting to monitor: 2014-10-16T14:25:13.729270Z qemu-kvm: -drive file=/var/tmp/v2vovl60e1a0.qcow2,if=none,id=drive-scsi0-0-0-0,format=qcow2,cache=unsafe,discard=unmap: could not open disk image /var/tmp/v2vovl60e1a0.qcow2: Could not open backing file: Could not open '/mnt/xen01/export/migr01.img': Permission denied [code=1 domain=10]
This is a problem with libvirt (RHBZ#890291). Follow the instructions printed in the error message to make it work. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 100 libraries supported. http://fedoraproject.org/wiki/MinGW
On Thu, Oct 16, 2014 at 04:34:03PM +0200, Artur Krzywdzinski wrote:
Hi
T'm trying to convert XEN virtual machine image into raw. Source file is on NFS export and destination is also on nfs export. (both exports are mounted on migration servers RW access). I'm getting permission denied. I have RW access to both exports - I can create, delete objects on both exports from migration server. But when I copy img file onto migration server local filesystem, conversion works, from local fs to nfs export. However when I tried to run guestfish against file located on NFS - I'm getting the same erro - Permission denied .
[root@kvm01 export]# virt-v2v -i disk migr01.img -o local -os /tmp [ 0.0] Opening the source -i disk migr01.img [ 0.0] Creating an overlay to protect the source from being modified [ 0.0] Opening the overlay virt-v2v: error: libguestfs error: could not create appliance through libvirt.
Try running qemu directly without libvirt using this environment variable: export LIBGUESTFS_BACKEND=direct
Original error from libvirt: internal error: process exited while connecting to monitor: 2014-10-16T14:25:13.729270Z qemu-kvm: -drive file=/var/tmp/v2vovl60e1a0.qcow2,if=none,id=drive-scsi0-0-0-0,format=qcow2,cache=unsafe,discard=unmap: could not open disk image /var/tmp/v2vovl60e1a0.qcow2: Could not open backing file: Could not open '/mnt/xen01/export/migr01.img': Permission denied [code=1 domain=10]
If reporting bugs, run virt-v2v with debugging enabled and include the complete output:
virt-v2v -v -x [...] [root@kvm01 export]#
Finally I worked out what's going on here. If your $HOME directly is on NFS, then you have to enable a couple of SELinux booleans so that libvirt can write to it: setsebool -P use_nfs_home_dirs on setsebool -P virt_use_nfs on Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com libguestfs lets you edit virtual machines. Supports shell scripting, bindings from many languages. http://libguestfs.org
participants (2)
-
Artur Krzywdzinski -
Richard W.M. Jones