Mathieu Baudier wrote: >> yes, you can add / remove disks to a VM without restarting the guest. >> look at the xm block-attach / block-detach commands >> > > My understanding is that xm is Xen specific (I'm using Qemu/KVM) > > I tried with virsh: > > virsh # attach-disk 6 /dev/mapper/vg_alma_fast-lv_test_virtlvm2 vdb > Disk attached successfully > > virsh # dumpxml 6 > <domain type='kvm' id='6'> > ... > <devices> > <emulator>/usr/libexec/qemu-kvm</emulator> > ... > <disk type='block' device='disk'> > <source dev='/dev/mapper/vg_alma_fast-lv_test_virtlvm'/> > <target dev='vda' bus='virtio'/> > </disk> > <disk type='block' device='disk'> > <driver name='phy'/> > <source dev='/dev/mapper/vg_alma_fast-lv_test_virtlvm2'/> > <target dev='vdb' bus='virtio'/> > </disk> > ... > </devices> > </domain> > > But I still cannot see the disk using fdisk: there is no /dev/vdb. > > You also need to tell the guest that a new device exists... Unless it (the guest) has some hotswap abilities.... _______________________________________________ CentOS-virt mailing list CentOS-virt@xxxxxxxxxx http://lists.centos.org/mailman/listinfo/centos-virt
