Hello I'm thinking to upgrade the libvirt to solve the problem as you said in your last mail. But I've installed the package using "apt-get install" and I can''t get higher version of all the packages involves doing an upgrade in ubuntu (I'm using 10.04) Can you suggest-me "an easy" way to upgrate the libvirt? Thank you very much. Marcela <div class="gmail_quote">2011/4/6 Eric Blake <<a href="mailto:eblake@redhat.com">eblake@redhat.com</a>> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"><div class="im">On 04/06/2011 04:09 AM, Michal Novotny wrote: > Hi, > the interesting thing is the "Permission denied" message in the log file: > > LC_ALL=C > PATH=/usr/local/sbin:/usr/local/bin:/usr/bin:/usr/sbin:/sbin:/bin > QEMU_AUDIO_DRV=none /usr/bin/qemu-system-x86_64 -S -M pc-0.12 > -enable-kvm -m 4096 -smp 4 -name chompi1 -uuid > 22f013aa-25d4-b317-9eac-b232692db8c7 -chardev > socket,id=monitor,path=/var/lib/libvirt/qemu/chompi1.monitor,server,nowait > -monitor chardev:monitor -boot c -drive > file=/home/radic/mvdata/imagenes/chompi1.img,if=ide,index=0,boot=on,format=raw > -drive if=ide,media=cdrom,index=2,format=raw -net > nic,macaddr=52:54:00:82:ce:80,vlan=0,model=virtio,name=virtio.0 -net > tap,fd=34,vlan=0,name=tap.0 -chardev pty,id=serial0 -serial > chardev:serial0 -parallel none -usb -vnc <a href="http://0.0.0.0:0" target="_blank">0.0.0.0:0</a> -vga cirrus -incoming > exec:cat > char device redirected to /dev/pts/2 > cat: -: Permission denied <== THIS ONE > load of migration failed > > I don't know much about the internal libvirt design since libvirt is not > my primary space so I hope my e-mails from yesterday helped a little but > I'll leave the rest for libvirt guys since I'm not having any other > ideas what could be wrong there. </div>That's a weird error - cat is complaining that it can't read stdin, which is usually a symptom associated with SELinux permissions. But you said earlier in this thread that you aren't using SELinux. Are you using AppArmor? At any rate, does upgrading to libvirt 0.9.0 improve the situation? exec: migration has always been risky (there are various data races involved in coordinating multiple processes, where qemu is using popen() to manage the use or even opening the file), and so newer libvirt uses fd: migration (where the fd is already open, so we don't even have to worry about permissions from qemu's point of view). <div><div></div><div class="h5"> -- Eric Blake <a href="mailto:eblake@redhat.com">eblake@redhat.com</a> +1-801-349-2682 Libvirt virtualization library <a href="http://libvirt.org" target="_blank">http://libvirt.org</a> </div></div></blockquote></div>