On 11/21/2012 04:09 AM, zhijun liu wrote: > hi,all > > I use Java api `domain.attachDeviceFlags(xml, 0);` to add a disk for > domain. the xml file like this: > > <disk type='file' device='disk'> > <driver name='qemu' type='raw'/> > <source file='/dev/sp1353486595267/v1353488096262'/> > <target dev='vdb' bus='virtio'/> > </disk> > > then I use command `virsh detach-disk $domain vdb` to remove the disk. > > what I said above have no any errors.but the problem is when I restart > this vm ,the disk still exist,because I see it from the command `virsh > dumpxml $domain` ,how to remove the disk from this domain persistently. Use the flags argument. By passing '0' (aka VIR_DOMAIN_AFFECT_CURRENT in the C API counterpart), you are explicitly requesting that only the current configuration be modified (for a running domain, that means you are doing a one-time hotplug, but not to remember it for the next boot). If you want to simultaneously hotplug _and_ affect the next boot, you need to instead pass whatever the Java binding is for the underlying flags VIR_DOMAIN_AFFECT_LIVE|VIR_DOMAIN_AFFECT_CONFIG of the C API (sorry, I don't know the Java binding well enough to know what that binding is). -- Eric Blake eblake@xxxxxxxxxx +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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