search for: virdomainblockcopy

Thanks for your reply. The nova project uses the virDomainBlockRebase API to finish the rebase operation from the old disk to the new disk not using the virDomainBlockCopy API. I am confused of the difference of virDomainBlockRebase and virDomainBlockCopy. Cheers, Boxiang On 11/5/2018 22:07，Peter Krempa<pkrempa@redhat.com> wrote： On Fri, Nov 02, 2018 at 13:42:56 +0800, Boxiang Zhu wrote: Hi. I am using openstack, ceph and libvirt now. The live volume mig...

Hi. I am using openstack, ceph and libvirt now. The live volume migration will call the libvirt rebase function in openstack nova project. https://github.com/openstack/nova/blob/stable/rocky/nova/virt/libvirt/driver.py#L1497 https://github.com/openstack/nova/blob/stable/rocky/nova/virt/libvirt/guest.py#L802 But I use the ceph as the openstack block backend. And the type of

...on to use with an older libvirtd? In other words, does the versions of libvirt and libvirtd need to be in lock step? 2. I'm able to use virsh blockcopy, but I want to do it programmatically via C. I looked through the API and was not able to see any references to that. I did see mention of virDomainBlockCopy on the TIP of the git repository, but no other references to it. How do I run virsh blockcopy via a C function?

On Wed, Nov 07, 2018 at 13:22:32 +0800, Boxiang Zhu wrote: > > > Thanks for your reply. The nova project uses the virDomainBlockRebase API to finish the rebase operation from the old disk to the new disk not using the virDomainBlockCopy API. > I am confused of the difference of virDomainBlockRebase and virDomainBlockCopy. virDomainBlockRebase way to do things was introduced to add the functionality without having to add new API. Later we've figured out that the new API is necessary anyways. If you want to copy to a netwo...

...e block or file disk now. > https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainBlockRebase > > > My question is that can I rebase network disk by some other ways from libvirt? Whic operation of "rebase" do you mean? Unfortunately we've implemented the virDomainBlockCopy API also using a flag-hack with the rebase api. Are you passing in VIR_DOMAIN_BLOCK_REBASE_COPY? If yes, then you in fact should use virDomainBlockCopy API which takes an XML which allows to specify also a network based disk. The support for block copy to a network destination will be added soon a...

...lthough the client being older means that you can't take full advantage of the server). > > > 2. I'm able to use virsh blockcopy, but I want to do it programmatically > via C. I looked through the API and was not able to see any references to > that. I did see mention of virDomainBlockCopy on the TIP of the git > repository, but no other references to it. The source code to virsh shows the APIs that we used; this is a good starting point for any other C binding, and also for any other language binding if you can map the C bindings over to your language bindings. In particular, to...

Hi, ALL, I just look for the class and method to use blockcopy in libvirt-java on this page: http://libvirt.org/sources/java/javadoc/ However, I can not find out. Libvirt-java Support blockcopy ? Thanks. Best Regards, Star Guo

Hi Looking in to implementing (CBT like) delta backup for KVM. The following looks promising..(last paragraph) http://wiki.qemu.org/Features/Snapshots2 * In the last para, there is a mention of copy the blocks from the disk using dirty-bitmap as reference. How to accomplish this ? block-mirror with bitmap or is there a qemu-img command ? some details would be

...ng merge requests. > > Regards > Simon > > int virDomainBlockPull (virDomainPtr > <https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainPtr> dom, > const char * disk, > unsigned long bandwidth, > unsigned int flags) > > > int virDomainBlockCopy (virDomainPtr > <https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainPtr> dom, > const char * disk, > const char * destxml, > virTypedParameterPtr > <https://libvirt.org/html/libvirt-libvirt-common.html#virTypedParameterPtr> params, >...

...disk using dirty-bitmap as reference. How to accomplish this ? > block-mirror with bitmap or is there a qemu-img command ? some details > would be appreciated. block-backup is a new QMP command that libvirt would need to expose; I don't know whether it is better to overload the existing virDomainBlockCopy() API for it, or to add a new API. > > // backup software now reads foo.img using t0_dirty.dbmp to perform > incremental backup, when finished > > > > * The backup after few runs in the backup store would be base image > + bunch of delta blocks ? Will this be same...

...ap as reference. How to accomplish this ? >> block-mirror with bitmap or is there a qemu-img command ? some details >> would be appreciated. > block-backup is a new QMP command that libvirt would need to expose; I > don't know whether it is better to overload the existing > virDomainBlockCopy() API for it, or to add a new API. So this seems to be already in qemu. How can I try this with KVM context. Do I need to build from source ? or some version of KVM already has this ? > >> // backup software now reads foo.img using t0_dirty.dbmp to perform >> incremental backup,...