def stale_vg(tmp_storage):
dev_size = 1 * 1024**3
dev1 = tmp_storage.create_device(dev_size)
dev2 = tmp_storage.create_device(dev_size)
good_vg_name = str(uuid.uuid4())
stale_vg_name = str(uuid.uuid4())
lvm.set_read_only(False)
# Create 1 VGs
lvm.createVG(good_vg_name, [dev1], "initial-tag", 128)
lvm.createVG(stale_vg_name, [dev2], "initial-tag", 128)
# Reload the cache.
vgs = sorted(vg.name for vg in lvm.getAllVGs())
assert vgs == sorted([good_vg_name, stale_vg_name])
# Simulate removal of the second VG on another host, leaving stale VG in
# the cache.
commands.run([
"vgremove",
"--config", tmp_storage.lvm_config(),
stale_vg_name,
])
# We still report both vgs.
vgs = sorted(vg.name for vg in lvm.getAllVGs())
assert vgs == sorted([good_vg_name, stale_vg_name])
return good_vg_name, stale_vg_name
def test_vg_stale_reload_all_clear(stale_vg):
good_vg_name, stale_vg_name = stale_vg
# Drop all cache.
lvm.invalidateCache()
clear_stats()
# Report only the good vg.
vgs = [vg.name for vg in lvm.getAllVGs()]
assert vgs == [good_vg_name]
check_stats(hits=0, misses=1)
# Second call for getAllVGs() will add cache hit.
lvm.getAllVGs()
check_stats(hits=1, misses=1)
def test_vg_stale_reload_all_clear(stale_vg):
good_vg_name, stale_vg_name = stale_vg
# Drop all cache.
lvm.invalidateCache()
# Report only the good vg.
vgs = [vg.name for vg in lvm.getAllVGs()]
assert vgs == [good_vg_name]
def test_vg_stale_reload_all_stub(stale_vg):
good_vg_name, stale_vg_name = stale_vg
# Invalidate vgs.
lvm.invalidateVG(good_vg_name)
lvm.invalidateVG(stale_vg_name)
# Report only the good vg.
vgs = [vg.name for vg in lvm.getAllVGs()]
assert vgs == [good_vg_name]
