def test_vg_invalidate_lvs(tmp_storage):
dev_size = 1 * GiB
dev = tmp_storage.create_device(dev_size)
vg_name = str(uuid.uuid4())
lvm.set_read_only(False)
lvm.createVG(vg_name, [dev], "initial-tag", 128)
lvm.createLV(vg_name, "lv1", 128, activate=False)
# Reload cache.
pv = lvm.getPV(dev)
vg = lvm.getVG(vg_name)
lv = lvm.getLV(vg_name)[0]
assert lvm._lvminfo._pvs == {dev: pv}
assert lvm._lvminfo._vgs == {vg_name: vg}
assert lvm._lvminfo._lvs == {(vg_name, "lv1"): lv}
# Invalidate VG including LVs.
lvm.invalidateVG(vg_name)
assert lvm._lvminfo._pvs == {dev: pv}
assert lvm._lvminfo._vgs == {vg_name: lvm.Stale(vg_name)}
assert lvm._lvminfo._lvs == {(vg_name, "lv1"): lvm.Stale("lv1")}
def test_lv_stale_reload_all_stale(stale_lv):
vg_name, good_lv_name, stale_lv_name = stale_lv
# Invalidate all lvs in single vg.
lvm.invalidateVG(vg_name, invalidateLVs=True)
# Only the good lv is reported.
lvs = [lv.name for lv in lvm.getLV(vg_name)]
assert lvs == [good_lv_name]
def test_pv_stale_reload_all_stale(stale_pv):
vg_name, good_pv_name, stale_pv_name = stale_pv
# Invalidate VG and its PVs.
lvm.invalidateVG(vg_name, invalidatePVs=True)
# Report only the good pv.
pv_names = [pv.name for pv in lvm.getAllPVs()]
assert pv_names == [good_pv_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]
def test_pv_stale_reload_all_stale(stale_pv):
vg_name, good_pv_name, stale_pv_name = stale_pv
# Invalidate VG and its PVs.
lvm.invalidateVG(vg_name, invalidatePVs=True)
# Reloading all PVs will return them as Unreadable due to missing
# stale PV.
assert set(lvm.getAllPVs()) == {
lvm.Unreadable(good_pv_name),
lvm.Unreadable(stale_pv_name)
}
def test_vg_invalidate(tmp_storage):
dev_size = 1 * GiB
dev1 = tmp_storage.create_device(dev_size)
dev2 = tmp_storage.create_device(dev_size)
vg1_name = str(uuid.uuid4())
vg2_name = str(uuid.uuid4())
lvm.set_read_only(False)
lvm.createVG(vg1_name, [dev1], "initial-tag", 128)
lvm.createLV(vg1_name, "lv1", 128, activate=False)
lvm.createVG(vg2_name, [dev2], "initial-tag", 128)
lvm.createLV(vg2_name, "lv2", 128, activate=False)
# Reload cache.
pv1 = lvm.getPV(dev1)
vg1 = lvm.getVG(vg1_name)
lv1 = lvm.getLV(vg1_name)[0]
pv2 = lvm.getPV(dev2)
vg2 = lvm.getVG(vg2_name)
lv2 = lvm.getLV(vg2_name)[0]
assert lvm._lvminfo._pvs == {dev1: pv1, dev2: pv2}
assert lvm._lvminfo._vgs == {vg1_name: vg1, vg2_name: vg2}
assert lvm._lvminfo._lvs == {
(vg1_name, "lv1"): lv1,
(vg2_name, "lv2"): lv2,
}
# Invalidate VG including LVs.
lvm.invalidateVG(vg1_name, invalidateLVs=False)
assert lvm._lvminfo._pvs == {dev1: pv1, dev2: pv2}
assert lvm._lvminfo._vgs == {
vg1_name: lvm.Stale(vg1_name),
vg2_name: vg2,
}
assert lvm._lvminfo._lvs == {
(vg1_name, "lv1"): lv1,
(vg2_name, "lv2"): lv2,
}
# getVGs() always reloads the cache.
clear_stats()
lvm.getVGs([vg1_name, vg2_name])
check_stats(hits=0, misses=1)
assert lvm._lvminfo._vgs == {vg1_name: vg1, vg2_name: vg2}
def test_pv_stale_reload_one_stale(stale_pv):
vg_name, good_pv_name, stale_pv_name = stale_pv
# Invalidate VG and its PVs.
lvm.invalidateVG(vg_name, invalidatePVs=True)
# The good pv is still in the cache.
pv = lvm.getPV(good_pv_name)
assert pv.name == good_pv_name
# The stale pv shuld be removed.
with pytest.raises(se.InaccessiblePhysDev):
lvm.getPV(stale_pv_name)
def test_lv_stale_reload_one_stale(stale_lv):
vg_name, good_lv_name, stale_lv_name = stale_lv
# Invalidate all lvs in single vg.
lvm.invalidateVG(vg_name, invalidateLVs=True)
# The good lv is still in the cache.
lv = lvm.getLV(vg_name, good_lv_name)
assert lv.name == good_lv_name
# The stale lv should be removed.
with pytest.raises(se.LogicalVolumeDoesNotExistError):
lvm.getLV(vg_name, stale_lv_name)
def test_pv_stale_reload_one_stale(stale_pv):
vg_name, good_pv_name, stale_pv_name = stale_pv
# Invalidate VG and its PVs.
lvm.invalidateVG(vg_name, invalidatePVs=True)
# The good pv is still in the cache.
pv = lvm.getPV(good_pv_name)
assert pv.name == good_pv_name
# Reloading the stale pv marks it as Unreadable.
pv = lvm.getPV(stale_pv_name)
assert pv == lvm.Unreadable(stale_pv_name)
def test_vg_stale_reload_one_stale(stale_vg):
good_vg_name, stale_vg_name = stale_vg
# Invalidate vgs.
lvm.invalidateVG(good_vg_name)
lvm.invalidateVG(stale_vg_name)
# The good vg is still in the cache.
vg = lvm.getVG(good_vg_name)
assert vg.name == good_vg_name
# The stale vg was removed.
with pytest.raises(se.VolumeGroupDoesNotExist):
lvm.getVG(stale_vg_name)
def test_vg_stale_reload_all_stale(stale_vg):
good_vg_name, stale_vg_name = stale_vg
# Invalidate vgs.
lvm.invalidateVG(good_vg_name)
lvm.invalidateVG(stale_vg_name)
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 getVolumeTag(sdUUID, volUUID, tagPrefix):
tags = lvm.getLV(sdUUID, volUUID).tags
if sc.TAG_VOL_UNINIT in tags:
log.warning("Reloading uninitialized volume %s/%s", sdUUID, volUUID)
lvm.invalidateVG(sdUUID)
tags = lvm.getLV(sdUUID, volUUID).tags
if sc.TAG_VOL_UNINIT in tags:
log.error("Found uninitialized volume: %s/%s", sdUUID, volUUID)
raise se.VolumeDoesNotExist("%s/%s" % (sdUUID, volUUID))
for tag in tags:
if tag.startswith(tagPrefix):
return tag[len(tagPrefix):]
else:
log.error("Missing tag %s in volume: %s/%s. tags: %s", tagPrefix,
sdUUID, volUUID, tags)
raise se.MissingTagOnLogicalVolume(volUUID, tagPrefix)
def getVolumeTag(sdUUID, volUUID, tagPrefix):
tags = lvm.getLV(sdUUID, volUUID).tags
if sc.TAG_VOL_UNINIT in tags:
log.warning("Reloading uninitialized volume %s/%s", sdUUID, volUUID)
lvm.invalidateVG(sdUUID)
tags = lvm.getLV(sdUUID, volUUID).tags
if sc.TAG_VOL_UNINIT in tags:
log.error("Found uninitialized volume: %s/%s", sdUUID, volUUID)
raise se.VolumeDoesNotExist("%s/%s" % (sdUUID, volUUID))
for tag in tags:
if tag.startswith(tagPrefix):
return tag[len(tagPrefix):]
else:
log.error("Missing tag %s in volume: %s/%s. tags: %s",
tagPrefix, sdUUID, volUUID, tags)
raise se.MissingTagOnLogicalVolume(volUUID, tagPrefix)
def test_vg_invalidate_lvs_pvs(tmp_storage):
dev_size = 1 * GiB
dev = tmp_storage.create_device(dev_size)
vg_name = str(uuid.uuid4())
lvm.set_read_only(False)
lvm.createVG(vg_name, [dev], "initial-tag", 128)
lvm.createLV(vg_name, "lv1", 128, activate=False)
# Reload cache.
pv = lvm.getPV(dev)
vg = lvm.getVG(vg_name)
lv = lvm.getLV(vg_name)[0]
assert lvm._lvminfo._pvs == {dev: pv}
clear_stats()
lvm._lvminfo.getPvs(vg_name)
# getPVs() first finds the VG using getVG(), so there is a cache hit.
# No stale PVs for the VG so getPVs() will have another cache hit.
check_stats(hits=2, misses=0)
assert lvm._lvminfo._vgs == {vg_name: vg}
assert lvm._lvminfo._lvs == {(vg_name, "lv1"): lv}
# Invalidate VG including LVs and PVs.
lvm.invalidateVG(vg_name, invalidatePVs=True)
assert lvm._lvminfo._vgs == {vg_name: lvm.Stale(vg_name)}
assert lvm._lvminfo._pvs == {dev: lvm.Stale(dev)}
clear_stats()
lvm._lvminfo.getPvs(vg_name)
# getPVs() will not find the invalidated VG in cache, so there is a miss.
# There are stale PVs for the VG so getPVs() will have another cache miss.
check_stats(hits=0, misses=2)
assert lvm._lvminfo._lvs == {(vg_name, "lv1"): lvm.Stale("lv1")}
def test_vg_invalidate_lvs(tmp_storage):
dev_size = 1 * GiB
dev = tmp_storage.create_device(dev_size)
vg_name = str(uuid.uuid4())
lvm.set_read_only(False)
lvm.createVG(vg_name, [dev], "initial-tag", 128)
lvm.createLV(vg_name, "lv1", 128, activate=False)
# Reload cache.
pv = lvm.getPV(dev)
vg = lvm.getVG(vg_name)
clear_stats()
lv = lvm.getLV(vg_name)[0]
check_stats(hits=0, misses=1)
# Accessing LVs always access storage.
# TODO: Use cache if VG did not change.
lvm.getLV(vg_name)
check_stats(hits=0, misses=2)
assert lvm._lvminfo._pvs == {dev: pv}
assert lvm._lvminfo._vgs == {vg_name: vg}
assert lvm._lvminfo._lvs == {(vg_name, "lv1"): lv}
# Invalidate VG including LVs.
lvm.invalidateVG(vg_name)
assert lvm._lvminfo._pvs == {dev: pv}
assert lvm._lvminfo._vgs == {vg_name: lvm.Stale(vg_name)}
assert lvm._lvminfo._lvs == {(vg_name, "lv1"): lvm.Stale("lv1")}
# Accessing LVs always access storage.
# TODO: Use cache if VG did not change.
clear_stats()
lvm.getLV(vg_name)
check_stats(hits=0, misses=1)
def test_lv_extend_reduce(tmp_storage):
dev_size = 20 * GiB
dev = tmp_storage.create_device(dev_size)
vg_name = str(uuid.uuid4())
lv_name = str(uuid.uuid4())
lvm.set_read_only(False)
lvm.createVG(vg_name, [dev], "initial-tag", 128)
lvm.createLV(vg_name, lv_name, 1024)
lvm.extendLV(vg_name, lv_name, 2048)
lv = lvm.getLV(vg_name, lv_name)
assert int(lv.size) == 2 * GiB
# Extending LV to same does nothing.
lvm.extendLV(vg_name, lv_name, 2048)
lvm.invalidateVG(vg_name)
lv = lvm.getLV(vg_name, lv_name)
assert int(lv.size) == 2 * GiB
# Extending LV to smaller size does nothing.
lvm.extendLV(vg_name, lv_name, 1024)
lvm.invalidateVG(vg_name)
lv = lvm.getLV(vg_name, lv_name)
assert int(lv.size) == 2 * GiB
# Reducing active LV requires force.
lvm.reduceLV(vg_name, lv_name, 1024, force=True)
lv = lvm.getLV(vg_name, lv_name)
assert int(lv.size) == 1 * GiB