Diff from v2:
- rebase to master
- update some qemu capabilities tests

Test results of this patch series on qemu-5.0.0 and librbd1-14.2.8:
disk xml:
    <disk type='network' device='disk'>
      <driver name='qemu' type='raw'/>
      <auth username='admin'>
        <secret type='ceph' usage='ceph_example'/>
      </auth>
      <source protocol='rbd' name='rbd/1' namespace='hhan'>
        <host name='CEPH_MON'/>
      </source>
      <target dev='vde' bus='virtio'/>
    </disk>

Live attach and detach the disk:
➜  ~ virsh attach-device new /tmp/ceph-ns.xml
Device attached successfully

➜  ~ virsh dumpxml new|xmllint --xpath //disk -
<disk type="file" device="disk">
      <driver name="qemu" type="qcow2"/>
      <source file="/var/lib/libvirt/images/new.qcow2" index="2"/>
      <backingStore/>
      <target dev="vda" bus="virtio"/>
      <serial>WD-WMAP9A966149</serial>
      <alias name="virtio-disk0"/>
      <address type="pci" domain="0x0000" bus="0x02" slot="0x00" function="0x0"/>
    </disk><disk type="network" device="disk">
      <driver name="qemu" type="raw"/>
      <auth username="admin">
        <secret type="ceph" usage="ceph_example"/>
      </auth>
      <source protocol="rbd" name="rbd/1" namespace="hhan" index="3">
        <host name="CEPH_MON"/>
      </source>
      <target dev="vde" bus="virtio"/>
      <alias name="virtio-disk4"/>
      <address type="pci" domain="0x0000" bus="0x03" slot="0x00" function="0x0"/>
    </disk>

➜  ~ virsh detach-device new /tmp/ceph-ns.xml
Device detached successfully

➜  ~ virsh dumpxml new|xmllint --xpath //disk -
<disk type="file" device="disk">
      <driver name="qemu" type="qcow2"/>
      <source file="/var/lib/libvirt/images/new.qcow2" index="2"/>
      <backingStore/>
      <target dev="vda" bus="virtio"/>
      <serial>WD-WMAP9A966149</serial>
      <alias name="virtio-disk0"/>
      <address type="pci" domain="0x0000" bus="0x02" slot="0x00" function="0x0"/>
    </disk>


It also works when start VM with this disk.
And tests pass when it is tested with -blockdev disabled:
<domain type='kvm' xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
   [...]
  <qemu:capabilities>
    <qemu:del capability='blockdev'/>
    <qemu:add capability='drive'/>
  </qemu:capabilities>
</domain>


v2: https://www.redhat.com/archives/libvir-list/2020-April/msg00972.html


Han Han (5):
  qemu_capabilities: Add QEMU_CAPS_RBD_NAMESPACE
  conf: Support to parse rbd namespace attribute
  qemu: Implement rbd namespace attribute
  doc: rng schemas and html doc for rbd namespace attribute
  news: qemu: Support rbd namespace

 NEWS.rst                                      |  6 +++
 docs/formatdomain.rst                         |  5 ++-
 docs/schemas/domaincommon.rng                 |  3 ++
 src/conf/domain_conf.c                        |  4 ++
 src/qemu/qemu_block.c                         |  1 +
 src/qemu/qemu_capabilities.c                  |  4 ++
 src/qemu/qemu_capabilities.h                  |  3 ++
 src/qemu/qemu_command.c                       |  7 +++-
 src/util/virstoragefile.h                     |  1 +
 .../caps_5.0.0.aarch64.xml                    |  1 +
 .../qemucapabilitiesdata/caps_5.0.0.ppc64.xml |  1 +
 .../caps_5.0.0.riscv64.xml                    |  1 +
 .../caps_5.0.0.x86_64.xml                     |  1 +
 .../caps_5.1.0.x86_64.xml                     |  1 +
 ...k-network-rbd-namespace.x86_64-latest.args | 41 +++++++++++++++++++
 .../disk-network-rbd-namespace.xml            | 33 +++++++++++++++
 tests/qemuxml2argvtest.c                      |  1 +
 ...sk-network-rbd-namespace.x86_64-latest.xml | 41 +++++++++++++++++++
 tests/qemuxml2xmltest.c                       |  1 +
 19 files changed, 154 insertions(+), 2 deletions(-)
 create mode 100644 tests/qemuxml2argvdata/disk-network-rbd-namespace.x86_64-latest.args
 create mode 100644 tests/qemuxml2argvdata/disk-network-rbd-namespace.xml
 create mode 100644 tests/qemuxml2xmloutdata/disk-network-rbd-namespace.x86_64-latest.xml

-- 
2.27.0