def test_lv_create_remove(tmp_storage, read_only):
dev_size = 10 * GiB
dev1 = tmp_storage.create_device(dev_size)
dev2 = tmp_storage.create_device(dev_size)
vg_name = str(uuid.uuid4())
lv_any = "lv-on-any-device"
lv_specific = "lv-on-device-2"
# Creating VG and LV requires read-write mode.
lvm.set_read_only(False)
lvm.createVG(vg_name, [dev1, dev2], "initial-tag", 128)
# Create the first LV on any device.
lvm.createLV(vg_name, lv_any, 1024)
# Getting lv must work in both read-only and read-write modes.
lvm.set_read_only(read_only)
clear_stats()
lv = lvm.getLV(vg_name, lv_any)
check_stats(hits=0, misses=1)
# Call getLV() again will have cache hit.
lvm.getLV(vg_name, lv_any)
check_stats(hits=1, misses=1)
assert lv.name == lv_any
assert lv.vg_name == vg_name
assert int(lv.size) == GiB
assert lv.tags == ()
assert lv.writeable
assert not lv.opened
assert lv.active
# LV typically created on dev1.
device, extent = lvm.getFirstExt(vg_name, lv_any)
assert device in dev1, dev2
assert extent == "0"
# Create the second LV on dev2 - reuquires read-write mode.
lvm.set_read_only(False)
lvm.createLV(vg_name, lv_specific, 1024, device=dev2)
# Testing LV must work in both read-only and read-write modes.
lvm.set_read_only(read_only)
device, extent = lvm.getFirstExt(vg_name, lv_specific)
assert device == dev2
# Remove both LVs - requires read-write mode.
lvm.set_read_only(False)
lvm.removeLVs(vg_name, [lv_any, lv_specific])
# Testing if lv exists most work in both read-only and read-write.
lvm.set_read_only(read_only)
for lv_name in (lv_any, lv_specific):
clear_stats()
with pytest.raises(se.LogicalVolumeDoesNotExistError):
lvm.getLV(vg_name, lv_name)
check_stats(hits=0, misses=1)
def test_lv_create_remove(tmp_storage, read_only):
dev_size = 10 * 1024**3
dev1 = tmp_storage.create_device(dev_size)
dev2 = tmp_storage.create_device(dev_size)
vg_name = str(uuid.uuid4())
lv_any = "lv-on-any-device"
lv_specific = "lv-on-device-2"
# Creating VG and LV requires read-write mode.
lvm.set_read_only(False)
lvm.createVG(vg_name, [dev1, dev2], "initial-tag", 128)
# Create the first LV on any device.
lvm.createLV(vg_name, lv_any, 1024)
# Getting lv must work in both read-only and read-write modes.
lvm.set_read_only(read_only)
lv = lvm.getLV(vg_name, lv_any)
assert lv.name == lv_any
assert lv.vg_name == vg_name
assert int(lv.size) == 1024**3
assert lv.tags == ()
assert lv.writeable
assert not lv.opened
assert lv.active
# LV typically created on dev1.
device, extent = lvm.getFirstExt(vg_name, lv_any)
assert device in dev1, dev2
assert extent == "0"
# Create the second LV on dev2 - reuquires read-write mode.
lvm.set_read_only(False)
lvm.createLV(vg_name, lv_specific, 1024, device=dev2)
# Testing LV must work in both read-only and read-write modes.
lvm.set_read_only(read_only)
device, extent = lvm.getFirstExt(vg_name, lv_specific)
assert device == dev2
# Remove both LVs - requires read-write mode.
lvm.set_read_only(False)
lvm.removeLVs(vg_name, [lv_any, lv_specific])
# Testing if lv exists most work in both read-only and read-write.
lvm.set_read_only(read_only)
for lv_name in (lv_any, lv_specific):
with pytest.raises(se.LogicalVolumeDoesNotExistError):
lvm.getLV(vg_name, lv_name)