def _run(self):
self.log.info("Merging subchain %s", self.subchain)
with guarded.context(self.subchain.locks):
self.subchain.validate()
with self.subchain.prepare(), self.subchain.volume_operation():
top_vol_path = self.subchain.top_vol.getVolumePath()
base_vol_path = self.subchain.base_vol.getVolumePath()
self.log.info("Committing data from %s to %s", top_vol_path,
base_vol_path)
self.operation = qemuimg.commit(
top_vol_path,
topFormat=sc.fmt2str(self.subchain.top_vol.getFormat()),
base=base_vol_path)
self.operation.run()
if (self.subchain.base_vol.getFormat() == sc.COW_FORMAT
and self.merge_bitmaps):
self.log.info("Merging bitmaps from %s to %s",
top_vol_path, base_vol_path)
# Add and merge all the bitmaps from top_vol that don't
# exist on the base_vol and not handled by block-commit.
base_parent_vol = self.subchain.base_vol.getParentVolume()
base_parent_path = (base_parent_vol.getVolumePath()
if base_parent_vol else None)
bitmaps.merge_bitmaps(base_vol_path,
top_vol_path,
base_parent_path=base_parent_path)
def _run(self):
self.log.info("Merging subchain %s", self.subchain)
with guarded.context(self.subchain.locks):
self.subchain.validate()
with self.subchain.prepare(), self.subchain.volume_operation():
self.operation = qemuimg.commit(
self.subchain.top_vol.getVolumePath(),
topFormat=sc.fmt2str(self.subchain.top_vol.getFormat()),
base=self.subchain.base_vol.getVolumePath())
self.operation.run()
def _run(self):
self.log.info("Merging subchain %s", self.subchain)
with guarded.context(self.subchain.locks):
self.subchain.validate()
with self.subchain.prepare(), self.subchain.volume_operation():
self.operation = qemuimg.commit(
self.subchain.top_vol.getVolumePath(),
topFormat=sc.fmt2str(self.subchain.top_vol.getFormat()),
base=self.subchain.base_vol.getVolumePath())
self.operation.run()
def test_commit_progress(self):
with namedTemporaryDir() as tmpdir:
size = 1048576
base = os.path.join(tmpdir, "base.img")
make_image(base, size, qemuimg.FORMAT.RAW, 0, "1.1")
top = os.path.join(tmpdir, "top.img")
make_image(top, size, qemuimg.FORMAT.QCOW2, 1, "1.1", base)
op = qemuimg.commit(top, topFormat=qemuimg.FORMAT.QCOW2)
op.run()
self.assertEqual(100, op.progress)
def test_commit_progress(self):
with namedTemporaryDir() as tmpdir:
size = 1048576
base = os.path.join(tmpdir, "base.img")
make_image(base, size, qemuimg.FORMAT.RAW, 0, "1.1")
top = os.path.join(tmpdir, "top.img")
make_image(top, size, qemuimg.FORMAT.QCOW2, 1, "1.1", base)
op = qemuimg.commit(top, topFormat=qemuimg.FORMAT.QCOW2)
op.run()
assert 100 == op.progress
def test_commit(self, qcow2_compat, base, top, use_base):
size = 1048576
with namedTemporaryDir() as tmpdir:
chain = []
parent = None
# Create a chain of 4 volumes.
for i in range(4):
vol = os.path.join(tmpdir, "vol%d.img" % i)
format = (qemuimg.FORMAT.RAW if i == 0 else
qemuimg.FORMAT.QCOW2)
make_image(vol, size, format, i, qcow2_compat, parent)
orig_offset = qemuimg.check(vol)["offset"] if i > 0 else None
chain.append((vol, orig_offset))
parent = vol
base_vol = chain[base][0]
top_vol = chain[top][0]
op = qemuimg.commit(top_vol,
topFormat=qemuimg.FORMAT.QCOW2,
base=base_vol if use_base else None)
op.run()
base_fmt = (qemuimg.FORMAT.RAW if base == 0 else
qemuimg.FORMAT.QCOW2)
for i in range(base, top + 1):
offset = i * 1024
pattern = 0xf0 + i
# The base volume must have the data from all the volumes
# merged into it.
qemuio.verify_pattern(
base_vol,
base_fmt,
offset=offset,
len=1024,
pattern=pattern)
if i > base:
# internal and top volumes should keep the data, we
# may want to wipe this data when deleting the volumes
# later.
vol, orig_offset = chain[i]
actual_offset = qemuimg.check(vol)["offset"]
assert actual_offset == orig_offset
def test_commit(self, qcow2_compat, base, top, use_base):
size = 1048576
with namedTemporaryDir() as tmpdir:
chain = []
parent = None
# Create a chain of 4 volumes.
for i in range(4):
vol = os.path.join(tmpdir, "vol%d.img" % i)
format = (qemuimg.FORMAT.RAW if i == 0 else
qemuimg.FORMAT.QCOW2)
make_image(vol, size, format, i, qcow2_compat, parent)
orig_offset = qemuimg.check(vol)["offset"] if i > 0 else None
chain.append((vol, orig_offset))
parent = vol
base_vol = chain[base][0]
top_vol = chain[top][0]
op = qemuimg.commit(top_vol,
topFormat=qemuimg.FORMAT.QCOW2,
base=base_vol if use_base else None)
op.run()
base_fmt = (qemuimg.FORMAT.RAW if base == 0 else
qemuimg.FORMAT.QCOW2)
for i in range(base, top + 1):
offset = i * 1024
pattern = 0xf0 + i
# The base volume must have the data from all the volumes
# merged into it.
qemuio.verify_pattern(
base_vol,
base_fmt,
offset=offset,
len=1024,
pattern=pattern)
if i > base:
# internal and top volumes should keep the data, we
# may want to wipe this data when deleting the volumes
# later.
vol, orig_offset = chain[i]
actual_offset = qemuimg.check(vol)["offset"]
assert actual_offset == orig_offset