def _make_snapshot(snapshot_numbers_take):
"""
Make external disk snapshot
:param snapshot_numbers_take: snapshot numbers.
"""
for count in range(0, snapshot_numbers_take):
snap_xml = snapshot_xml.SnapshotXML()
snapshot_name = "blockcopy_snap"
snap_xml.snap_name = snapshot_name + "_%s" % count
snap_xml.description = "blockcopy snapshot"
# Add all disks into xml file.
vmxml = vm_xml.VMXML.new_from_inactive_dumpxml(vm_name)
disks = vmxml.devices.by_device_tag('disk')
# Remove non-storage disk such as 'cdrom'
for disk in disks:
if disk.device != 'disk':
disks.remove(disk)
new_disks = []
src_disk_xml = disks[0]
disk_xml = snap_xml.SnapDiskXML()
disk_xml.xmltreefile = src_disk_xml.xmltreefile
del disk_xml.device
del disk_xml.address
disk_xml.snapshot = "external"
disk_xml.disk_name = disk_xml.target['dev']
# Only qcow2 works as external snapshot file format, update it
# here
driver_attr = disk_xml.driver
driver_attr.update({'type': 'qcow2'})
disk_xml.driver = driver_attr
new_attrs = disk_xml.source.attrs
if 'file' in disk_xml.source.attrs:
new_file = os.path.join(tmp_dir,
"blockcopy_shallow_%s.snap" % count)
snapshot_external_disks.append(new_file)
new_attrs.update({'file': new_file})
hosts = None
elif ('dev' in disk_xml.source.attrs
or 'name' in disk_xml.source.attrs
or 'pool' in disk_xml.source.attrs):
if (disk_xml.type_name == 'block'
or disk_source_protocol == 'iscsi'):
disk_xml.type_name = 'block'
if 'name' in new_attrs:
del new_attrs['name']
del new_attrs['protocol']
elif 'pool' in new_attrs:
del new_attrs['pool']
del new_attrs['volume']
del new_attrs['mode']
back_path = utl.setup_or_cleanup_iscsi(
is_setup=True,
is_login=True,
image_size="1G",
emulated_image=back_n)
emulated_iscsi.append(back_n)
cmd = "qemu-img create -f qcow2 %s 1G" % back_path
process.run(cmd, shell=True)
new_attrs.update({'dev': back_path})
hosts = None
new_src_dict = {"attrs": new_attrs}
if hosts:
new_src_dict.update({"hosts": hosts})
disk_xml.source = disk_xml.new_disk_source(**new_src_dict)
new_disks.append(disk_xml)
snap_xml.set_disks(new_disks)
snapshot_xml_path = snap_xml.xml
logging.debug("The snapshot xml is: %s" % snap_xml.xmltreefile)
options = "--disk-only --xmlfile %s " % snapshot_xml_path
snapshot_result = virsh.snapshot_create(vm_name,
options,
debug=True)
if snapshot_result.exit_status != 0:
raise exceptions.TestFail(snapshot_result.stderr)
def make_disk_snapshot(snapshot_take):
"""
Make external snapshots for disks only.
:param snapshot_take: snapshots taken.
"""
for count in range(1, snapshot_take + 1):
snap_xml = snapshot_xml.SnapshotXML()
snapshot_name = "snapshot_test%s" % count
snap_xml.snap_name = snapshot_name
snap_xml.description = "Snapshot Test %s" % count
# Add all disks into xml file.
vmxml = vm_xml.VMXML.new_from_inactive_dumpxml(vm_name)
disks = vmxml.devices.by_device_tag('disk')
new_disks = []
for src_disk_xml in disks:
disk_xml = snap_xml.SnapDiskXML()
disk_xml.xmltreefile = src_disk_xml.xmltreefile
# Skip cdrom
if disk_xml.device == "cdrom":
continue
del disk_xml.device
del disk_xml.address
disk_xml.snapshot = "external"
disk_xml.disk_name = disk_xml.target['dev']
# Only qcow2 works as external snapshot file format, update it
# here
driver_attr = disk_xml.driver
driver_attr.update({'type': 'qcow2'})
disk_xml.driver = driver_attr
new_attrs = disk_xml.source.attrs
if 'file' in disk_xml.source.attrs:
file_name = disk_xml.source.attrs['file']
new_file = "%s.snap%s" % (file_name.split('.')[0],
count)
snapshot_external_disks.append(new_file)
new_attrs.update({'file': new_file})
hosts = None
elif ('name' in disk_xml.source.attrs and
disk_src_protocol == 'gluster'):
src_name = disk_xml.source.attrs['name']
new_name = "%s.snap%s" % (src_name.split('.')[0],
count)
new_attrs.update({'name': new_name})
snapshot_external_disks.append(new_name)
hosts = disk_xml.source.hosts
elif ('dev' in disk_xml.source.attrs or
'name' in disk_xml.source.attrs):
if (disk_xml.type_name == 'block' or
disk_src_protocol in ['iscsi', 'rbd']):
# Use local file as external snapshot target for block
# and iscsi network type.
# As block device will be treat as raw format by
# default, it's not fit for external disk snapshot
# target. A work around solution is use qemu-img again
# with the target.
# And external active snapshots are not supported on
# 'network' disks using 'iscsi' protocol
disk_xml.type_name = 'file'
if 'dev' in new_attrs:
del new_attrs['dev']
elif 'name' in new_attrs:
del new_attrs['name']
del new_attrs['protocol']
new_file = "%s/blk_src_file.snap%s" % (tmp_dir, count)
snapshot_external_disks.append(new_file)
new_attrs.update({'file': new_file})
hosts = None
new_src_dict = {"attrs": new_attrs}
if hosts:
new_src_dict.update({"hosts": hosts})
disk_xml.source = disk_xml.new_disk_source(**new_src_dict)
new_disks.append(disk_xml)
snap_xml.set_disks(new_disks)
snapshot_xml_path = snap_xml.xml
logging.debug("The snapshot xml is: %s" % snap_xml.xmltreefile)
options = "--disk-only --xmlfile %s " % snapshot_xml_path
snapshot_result = virsh.snapshot_create(
vm_name, options, debug=True)
if snapshot_result.exit_status != 0:
test.fail(snapshot_result.stderr)
# Create a file flag in VM after each snapshot
flag_file = tempfile.NamedTemporaryFile(prefix=("snapshot_test_"),
dir="/tmp")
file_path = flag_file.name
flag_file.close()
status, output = session.cmd_status_output("touch %s" % file_path)
if status:
test.fail("Touch file in vm failed. %s" % output)
snapshot_flag_files.append(file_path)
def _make_snapshot():
"""
Make external disk snapshot
"""
snap_xml = snapshot_xml.SnapshotXML()
snapshot_name = "blockcopy_snap"
snap_xml.snap_name = snapshot_name
snap_xml.description = "blockcopy snapshot"
# Add all disks into xml file.
vmxml = vm_xml.VMXML.new_from_inactive_dumpxml(vm_name)
disks = vmxml.devices.by_device_tag('disk')
new_disks = []
src_disk_xml = disks[0]
disk_xml = snap_xml.SnapDiskXML()
disk_xml.xmltreefile = src_disk_xml.xmltreefile
del disk_xml.device
del disk_xml.address
disk_xml.snapshot = "external"
disk_xml.disk_name = disk_xml.target['dev']
# Only qcow2 works as external snapshot file format, update it
# here
driver_attr = disk_xml.driver
driver_attr.update({'type': 'qcow2'})
disk_xml.driver = driver_attr
new_attrs = disk_xml.source.attrs
if disk_xml.source.attrs.has_key('file'):
new_file = os.path.join(tmp_dir, "blockcopy_shallow.snap")
snapshot_external_disks.append(new_file)
new_attrs.update({'file': new_file})
hosts = None
elif (disk_xml.source.attrs.has_key('dev')
or disk_xml.source.attrs.has_key('name')
or disk_xml.source.attrs.has_key('pool')):
if (disk_xml.type_name == 'block'
or disk_source_protocol == 'iscsi'):
disk_xml.type_name = 'block'
if new_attrs.has_key('name'):
del new_attrs['name']
del new_attrs['protocol']
elif new_attrs.has_key('pool'):
del new_attrs['pool']
del new_attrs['volume']
del new_attrs['mode']
back_path = utl.setup_or_cleanup_iscsi(is_setup=True,
is_login=True,
image_size="1G",
emulated_image=back_n)
cmd = "qemu-img create -f qcow2 %s 1G" % back_path
utils.system(cmd)
new_attrs.update({'dev': back_path})
hosts = None
new_src_dict = {"attrs": new_attrs}
if hosts:
new_src_dict.update({"hosts": hosts})
disk_xml.source = disk_xml.new_disk_source(**new_src_dict)
new_disks.append(disk_xml)
snap_xml.set_disks(new_disks)
snapshot_xml_path = snap_xml.xml
logging.debug("The snapshot xml is: %s" % snap_xml.xmltreefile)
options = "--disk-only --xmlfile %s " % snapshot_xml_path
snapshot_result = virsh.snapshot_create(vm_name, options, debug=True)
if snapshot_result.exit_status != 0:
raise error.TestFail(snapshot_result.stderr)
