Hi Peter, On Mon, Feb 5, 2024 at 6:45 PM Peter Krempa <pkre...@redhat.com> wrote: > > On Sun, Feb 04, 2024 at 20:31:33 +1100, Julian Calaby wrote: > > Hi, > > > > I have a fancy new Ceph cluster and have configured a storage pool > > using it in libvirt. I have a bunch of disk images in a "filesystem > > directory" storage pool. I want to migrate those disk images into the > > RBD pool. > > > > What is the process for doing this? > > [...] > > > 2. virsh blockcopy > > This is the proper way to do it for any running VM as it's the only > approach which preserves data consistency from VM writes, as well as > updates XMLs. > > > No idea how to actually achieve what I want here as it doesn't seem > > capable of copying to a non-file destination. > > 'virsh blockcopy' does in fact support non-file destinations by passing > the XML description identical to the <disk> element via the --xml > argument. The XML for ceph/rbd should look like: > > <disk type='network'> > <driver name="qemu" type="raw"/> > <source protocol="rbd" name="image_name2"> > <host name="hostname" port="7000"/> > <auth username='myuser'> > <secret type='ceph' usage='mypassid'/> > </auth> > </source> > </disk> > > To run the blockcopy operation and then subsequently switch to the new > image after it finishes additional arguments will be needed: > > virsh blockcopy > --domain $VMNAME > --path $SOURCEDISKTARGET > --xml /path/to/xml > --transient-job > --verbose > --pivot
And that disk XML is the secret sauce I was looking for. This worked perfectly and was surprisingly quick too. > I don't recall now whether you might need to pre-create the > properly-sized rbd volume in ceph or qemu can do that for you. It does create the image automatically for you. Thanks so much! -- Julian Calaby Email: julian.cal...@gmail.com Profile: http://www.google.com/profiles/julian.calaby/ _______________________________________________ Users mailing list -- users@lists.libvirt.org To unsubscribe send an email to users-le...@lists.libvirt.org
