def test_finalize(self, sd_type, chain_len, base_index, top_index):
with self.make_env(sd_type=sd_type, chain_len=chain_len) as env:
base_vol = env.chain[base_index]
top_vol = env.chain[top_index]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
merge.finalize(subchain)
# If top has a child, the child must now be rebased on base.
if top_vol is not env.chain[-1]:
child_vol = env.chain[top_index + 1]
info = qemuimg.info(child_vol.volumePath)
self.assertEqual(
info['backingfile'],
volume.getBackingVolumePath(subchain.img_id,
subchain.base_id))
# verify syncVolumeChain arguments
self.check_sync_volume_chain(subchain, env.chain[-1].volUUID)
new_chain = [vol.volUUID for vol in env.chain]
new_chain.remove(top_vol.volUUID)
self.assertEqual(image.Image.syncVolumeChain.actual_chain,
new_chain)
self.assertEqual(base_vol.getLegality(), sc.LEGAL_VOL)
def test_chain_after_finalize(self, base_fmt):
with self.make_env(format=base_fmt, chain_len=3) as env:
base_vol = env.chain[0]
# We write data to the base and will read it from the child volume
# to verify that the chain is valid after qemu-rebase.
offset = 0
pattern = 0xf0
length = 1024
qemu_pattern_write(base_vol.volumePath,
sc.fmt2str(base_vol.getFormat()),
offset=offset,
len=length, pattern=pattern)
top_vol = env.chain[1]
child_vol = env.chain[2]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
merge.finalize(subchain)
qemu_pattern_verify(child_vol.volumePath,
sc.fmt2str(child_vol.getFormat()),
offset=offset,
len=length, pattern=pattern)
def test_chain_after_finalize(self, base_fmt):
with self.make_env(format=base_fmt, chain_len=3) as env:
base_vol = env.chain[0]
# We write data to the base and will read it from the child volume
# to verify that the chain is valid after qemu-rebase.
offset = 0
pattern = 0xf0
length = 1024
qemu_pattern_write(base_vol.volumePath,
sc.fmt2str(base_vol.getFormat()),
offset=offset,
len=length,
pattern=pattern)
top_vol = env.chain[1]
child_vol = env.chain[2]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
merge.finalize(subchain)
qemu_pattern_verify(child_vol.volumePath,
sc.fmt2str(child_vol.getFormat()),
offset=offset,
len=length,
pattern=pattern)
def test_finalize(self, sd_type, chain_len, base_index, top_index):
with self.make_env(sd_type=sd_type, chain_len=chain_len) as env:
base_vol = env.chain[base_index]
# This volume *was* prepared
base_vol.setLegality(sc.ILLEGAL_VOL)
top_vol = env.chain[top_index]
subchain_info = dict(
sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0,
)
subchain = merge.SubchainInfo(subchain_info, 0)
merge.finalize(subchain)
# If top has a child, the child must now be rebased on base.
if top_vol is not env.chain[-1]:
child_vol = env.chain[top_index + 1]
info = qemuimg.info(child_vol.volumePath)
self.assertEqual(info["backingfile"], base_vol.volumePath)
# verify syncVolumeChain arguments
self.assertEquals(image.Image.syncVolumeChain.sd_id, subchain.sd_id)
self.assertEquals(image.Image.syncVolumeChain.img_id, subchain.img_id)
self.assertEquals(image.Image.syncVolumeChain.vol_id, env.chain[-1].volUUID)
new_chain = [vol.volUUID for vol in env.chain]
new_chain.remove(top_vol.volUUID)
self.assertEquals(image.Image.syncVolumeChain.actual_chain, new_chain)
self.assertEqual(base_vol.getLegality(), sc.LEGAL_VOL)
def test_finalize_illegal_volume(self, volume):
with self.make_env(sd_type='block', format='cow', chain_len=4) as env:
base_vol = env.chain[1]
top_vol = env.chain[2]
if volume == 'base':
base_vol.setLegality(sc.ILLEGAL_VOL)
else:
top_vol.setLegality(sc.ILLEGAL_VOL)
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
with self.assertRaises(se.prepareIllegalVolumeError):
merge.finalize(subchain)
def test_finalize_illegal_volume(self, volume):
with self.make_env(sd_type='block', format='cow', chain_len=4) as env:
base_vol = env.chain[1]
top_vol = env.chain[2]
if volume == 'base':
base_vol.setLegality(sc.ILLEGAL_VOL)
else:
top_vol.setLegality(sc.ILLEGAL_VOL)
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
with self.assertRaises(se.prepareIllegalVolumeError):
merge.finalize(subchain)
def test_validate_illegal_base(self):
with self.make_env(sd_type="file", chain_len=3) as env:
base_vol = env.chain[0]
# This volume was *not* prepared
base_vol.setLegality(sc.LEGAL_VOL)
top_vol = env.chain[1]
subchain_info = dict(
sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0,
)
subchain = merge.SubchainInfo(subchain_info, 0)
with self.assertRaises(se.UnexpectedVolumeState):
merge.finalize(subchain)
def test_qemuimg_rebase_failed(self):
with self.make_env(sd_type='file', chain_len=4) as env:
base_vol = env.chain[1]
top_vol = env.chain[2]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
with MonkeyPatchScope([(qemuimg._qemuimg, '_cmd', '/usr/bin/false')
]):
with self.assertRaises(cmdutils.Error):
merge.finalize(subchain)
self.assertEqual(subchain.top_vol.getLegality(), sc.LEGAL_VOL)
self.assertEqual(subchain.top_vol.getParent(), base_vol.volUUID)
def test_qemuimg_rebase_failed(self):
with self.make_env(sd_type='file', chain_len=4) as env:
base_vol = env.chain[1]
top_vol = env.chain[2]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
with MonkeyPatchScope([
(qemuimg._qemuimg, '_cmd', '/usr/bin/false')
]):
with self.assertRaises(cmdutils.Error):
merge.finalize(subchain)
self.assertEqual(subchain.top_vol.getLegality(), sc.LEGAL_VOL)
self.assertEqual(subchain.top_vol.getParent(), base_vol.volUUID)
def test_reduce_not_chunked(self):
with self.make_env(sd_type='file', format='cow', chain_len=4) as env:
base_vol = env.chain[1]
top_vol = env.chain[2]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
merge.finalize(subchain)
fake_sd = env.sdcache.domains[env.sd_manifest.sdUUID]
fake_base_vol = fake_sd.produceVolume(subchain.img_id,
subchain.base_id)
calls = getattr(fake_base_vol, "__calls__", {})
# Verify that 'calls' is empty which means that 'reduce' wasn't
# called
self.assertEqual(len(calls), 0)
def test_reduce_chunked(self):
with self.make_env(sd_type='block', format='cow', chain_len=4) as env:
base_vol = env.chain[1]
top_vol = env.chain[2]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
merge.finalize(subchain)
fake_sd = env.sdcache.domains[env.sd_manifest.sdUUID]
fake_base_vol = fake_sd.produceVolume(subchain.img_id,
subchain.base_id)
self.assertEqual(len(fake_base_vol.__calls__), 1)
optimal_size = base_vol.optimal_size() // sc.BLOCK_SIZE
self.assertEqual(fake_base_vol.__calls__[0],
('reduce', (optimal_size, ), {}))
def test_reduce_chunked(self):
with self.make_env(sd_type='block', format='cow', chain_len=4) as env:
base_vol = env.chain[1]
top_vol = env.chain[2]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
merge.finalize(subchain)
fake_sd = env.sdcache.domains[env.sd_manifest.sdUUID]
fake_base_vol = fake_sd.produceVolume(subchain.img_id,
subchain.base_id)
self.assertEqual(len(fake_base_vol.__calls__), 1)
optimal_size = base_vol.optimal_size() // sc.BLOCK_SIZE
self.assertEqual(fake_base_vol.__calls__[0],
('reduce', (optimal_size,), {}))
def test_reduce_not_chunked(self):
with self.make_env(sd_type='file', format='cow', chain_len=4) as env:
base_vol = env.chain[1]
top_vol = env.chain[2]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
merge.finalize(subchain)
fake_sd = env.sdcache.domains[env.sd_manifest.sdUUID]
fake_base_vol = fake_sd.produceVolume(subchain.img_id,
subchain.base_id)
calls = getattr(fake_base_vol, "__calls__", {})
# Verify that 'calls' is empty which means that 'reduce' wasn't
# called
self.assertEqual(len(calls), 0)
def test_reduce_failure(self):
with self.make_env(sd_type='block', format='cow', chain_len=4) as env:
base_vol = env.chain[0]
top_vol = env.chain[1]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
fake_sd = env.sdcache.domains[env.sd_manifest.sdUUID]
fake_base_vol = fake_sd.produceVolume(subchain.img_id,
subchain.base_id)
fake_base_vol.errors["reduce"] = se.LogicalVolumeExtendError(
"vgname", "lvname", base_vol.optimal_size())
with self.assertRaises(se.LogicalVolumeExtendError):
merge.finalize(subchain)
# verify syncVolumeChain arguments
self.check_sync_volume_chain(subchain, env.chain[-1].volUUID)
def test_reduce_failure(self):
with self.make_env(sd_type='block', format='cow', chain_len=4) as env:
base_vol = env.chain[0]
top_vol = env.chain[1]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
fake_sd = env.sdcache.domains[env.sd_manifest.sdUUID]
fake_base_vol = fake_sd.produceVolume(subchain.img_id,
subchain.base_id)
fake_base_vol.errors["reduce"] = se.LogicalVolumeExtendError(
"vgname", "lvname", base_vol.optimal_size())
with self.assertRaises(se.LogicalVolumeExtendError):
merge.finalize(subchain)
# verify syncVolumeChain arguments
self.check_sync_volume_chain(subchain, env.chain[-1].volUUID)
def test_rollback_volume_legallity_failed(self):
with self.make_env(sd_type='block', chain_len=4) as env:
base_vol = env.chain[1]
top_vol = env.chain[2]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
def setLegality(self, legality):
if legality == sc.LEGAL_VOL:
raise RuntimeError("Rollback volume legality failed")
self.setMetaParam(sc.LEGALITY, legality)
with MonkeyPatchScope([
(qemuimg._qemuimg, '_cmd', '/usr/bin/false'),
(volume.VolumeManifest, 'setLegality', setLegality),
]):
with self.assertRaises(cmdutils.Error):
merge.finalize(subchain)
self.assertEqual(subchain.top_vol.getLegality(), sc.ILLEGAL_VOL)
def test_rollback_volume_legallity_failed(self):
with self.make_env(sd_type='block', chain_len=4) as env:
base_vol = env.chain[1]
top_vol = env.chain[2]
subchain_info = dict(sd_id=base_vol.sdUUID,
img_id=base_vol.imgUUID,
base_id=base_vol.volUUID,
top_id=top_vol.volUUID,
base_generation=0)
subchain = merge.SubchainInfo(subchain_info, 0)
def setLegality(self, legality):
if legality == sc.LEGAL_VOL:
raise RuntimeError("Rollback volume legality failed")
self.setMetaParam(sc.LEGALITY, legality)
with MonkeyPatchScope([
(qemuimg._qemuimg, '_cmd', '/usr/bin/false'),
(volume.VolumeManifest, 'setLegality', setLegality),
]):
with self.assertRaises(cmdutils.Error):
merge.finalize(subchain)
self.assertEqual(subchain.top_vol.getLegality(), sc.ILLEGAL_VOL)