Re: [libvirt] save / restore for KVM

Hello, Am Samstag, 5. Juli 2008 18:48:13 schrieb Daniel P. Berrange: > On Sat, Jul 05, 2008 at 01:59:26PM +0200, Matthias Pfafferodt wrote: > > Hello, > > > > I try to save a KVM domain which has its hard disk on a LVM volume. I > > can execute the command to save the domain but restore fails > > > > # virsh list > > Id Name State > > ---------------------------------- > > 3 kvm-linux03 running > > 4 kvm-linux01 running > > > > # virsh save kvm-linux01 ./kvm-linux01.ram > > Domain kvm-linux01 saved to ./kvm-linux01.ram > > > > # virsh list > > Id Name State > > ---------------------------------- > > 3 kvm-linux03 running > > > > # virsh restore ./kvm-linux01.ram > > libvir: QEMU error : operation failed: failed to start VM > > error: Failed to restore domain from ./kvm-linux01.ram > > You don't mention which version of KVM or libvirt being used, or which > distro. If its Fedora then plesae file a bug against libvirt or KVM. > There's one possible issue in KVM that could be causing it depending > on which version you're using. Sorry, I'm using opensuse 10.3 with the following libvirt / kvm packages: # rpm -qa | grep libvirt libvirt-python-0.4.4-12.1 libvirt-0.4.4-12.1 libvirt-devel-0.4.4-12.1 libvirt-doc-0.4.4-12.1 # rpm -qa | grep kvm kvm-70.git-2.4 kvm-kmp-default-70_2.6.22.18_0.2-2.2

> > I tried to save and restore this domain using kvm directly > > > > # /usr/bin/qemu-kvm -m 1024 -boot c -drive > > file=/dev/virtual/kvm_linux01,if=ide,index=0,boot=on -net > > nic,macaddr=00:16:3e:00:01:02,vlan=0 -net > > tap,fd=24,script=,vlan=0,ifname=vnet3 > > (qemu) savevm kvm-linux01.ram > > Device id0-hd0 does not support VM state snapshots > > Libvirt doesn't use savevm - it uses the migration protocol support > instead. So 'virsh save' should work. Is there a possibility to debug this to get information why it does not restore the vm? Or to test the used migration protocol using only one computer? Matthias resend - forgot the list ... > Daniel -- Libvir-list mailing list Libvir-list(a)redhat.com https://www.redhat.com/mailman/listinfo/libvir-list