def _acquire_metadata_slot(self):
sd_id = self.sd_manifest.sdUUID
with self.sd_manifest.acquireVolumeMetadataSlot(
self.vol_id, sc.VOLUME_MDNUMBLKS) as slot:
md_tag = sc.TAG_PREFIX_MD + str(slot)
lvm.changeLVTags(sd_id, self.vol_id, addTags=[md_tag])
return slot
def _acquire_metadata_slot(self):
sd_id = self.sd_manifest.sdUUID
with self.sd_manifest.acquireVolumeMetadataSlot(
self.vol_id, sc.VOLUME_MDNUMBLKS) as slot:
md_tag = sc.TAG_PREFIX_MD + str(slot)
lvm.changeLVTags(sd_id, self.vol_id, addTags=[md_tag])
return slot
def commit(self):
lv = lvm.getLV(self.sd_manifest.sdUUID, self.vol_id)
if sc.TEMP_VOL_LVTAG not in lv.tags:
raise se.VolumeAlreadyExists("LV %r has already been committed" %
self.vol_id)
lvm.changeLVTags(self.sd_manifest.sdUUID, self.vol_id,
delTags=(sc.TEMP_VOL_LVTAG,))
def commit(self):
lv = lvm.getLV(self.sd_manifest.sdUUID, self.vol_id)
if sc.TEMP_VOL_LVTAG not in lv.tags:
raise se.VolumeAlreadyExists("LV %r has already been committed" %
self.vol_id)
lvm.changeLVTags(self.sd_manifest.sdUUID, self.vol_id,
delTags=(sc.TEMP_VOL_LVTAG,))
def _create(cls, dom, imgUUID, volUUID, size, volFormat, preallocate,
volParent, srcImgUUID, srcVolUUID, volPath, initialSize=None):
"""
Class specific implementation of volumeCreate. All the exceptions are
properly handled and logged in volume.create()
"""
lvSize = cls.calculate_volume_alloc_size(preallocate,
size, initialSize)
lvm.createLV(dom.sdUUID, volUUID, "%s" % lvSize, activate=True,
initialTags=(sc.TAG_VOL_UNINIT,))
fileutils.rm_file(volPath)
lvPath = lvm.lvPath(dom.sdUUID, volUUID)
cls.log.info("Creating volume symlink from %r to %r", lvPath, volPath)
os.symlink(lvPath, volPath)
if not volParent:
cls.log.info("Request to create %s volume %s with size = %s "
"blocks", sc.type2name(volFormat), volPath,
size)
if volFormat == sc.COW_FORMAT:
operation = qemuimg.create(volPath,
size=size * BLOCK_SIZE,
format=sc.fmt2str(volFormat),
qcow2Compat=dom.qcow2_compat())
operation.run()
else:
# Create hardlink to template and its meta file
cls.log.info("Request to create snapshot %s/%s of volume %s/%s "
"with size %s (blocks)",
imgUUID, volUUID, srcImgUUID, srcVolUUID, size)
volParent.clone(volPath, volFormat, size)
with dom.acquireVolumeMetadataSlot(
volUUID, sc.VOLUME_MDNUMBLKS) as slot:
mdTags = ["%s%s" % (sc.TAG_PREFIX_MD, slot),
"%s%s" % (sc.TAG_PREFIX_PARENT, srcVolUUID),
"%s%s" % (sc.TAG_PREFIX_IMAGE, imgUUID)]
lvm.changeLVTags(dom.sdUUID, volUUID, delTags=[sc.TAG_VOL_UNINIT],
addTags=mdTags)
try:
lvm.deactivateLVs(dom.sdUUID, [volUUID])
except se.CannotDeactivateLogicalVolume:
cls.log.warn("Cannot deactivate new created volume %s/%s",
dom.sdUUID, volUUID, exc_info=True)
return (dom.sdUUID, slot)
def _create(cls, dom, imgUUID, volUUID, size, volFormat, preallocate,
volParent, srcImgUUID, srcVolUUID, volPath, initialSize=None):
"""
Class specific implementation of volumeCreate. All the exceptions are
properly handled and logged in volume.create()
"""
lvSize = cls.calculate_volume_alloc_size(preallocate,
size, initialSize)
lvm.createLV(dom.sdUUID, volUUID, lvSize, activate=True,
initialTags=(sc.TAG_VOL_UNINIT,))
fileutils.rm_file(volPath)
lvPath = lvm.lvPath(dom.sdUUID, volUUID)
cls.log.info("Creating volume symlink from %r to %r", lvPath, volPath)
os.symlink(lvPath, volPath)
if not volParent:
cls.log.info("Request to create %s volume %s with size = %s "
"blocks", sc.type2name(volFormat), volPath,
size)
if volFormat == sc.COW_FORMAT:
operation = qemuimg.create(volPath,
size=size * BLOCK_SIZE,
format=sc.fmt2str(volFormat),
qcow2Compat=dom.qcow2_compat())
operation.run()
else:
# Create hardlink to template and its meta file
cls.log.info("Request to create snapshot %s/%s of volume %s/%s "
"with size %s (blocks)",
imgUUID, volUUID, srcImgUUID, srcVolUUID, size)
volParent.clone(volPath, volFormat, size)
with dom.acquireVolumeMetadataSlot(volUUID) as slot:
mdTags = ["%s%s" % (sc.TAG_PREFIX_MD, slot),
"%s%s" % (sc.TAG_PREFIX_PARENT, srcVolUUID),
"%s%s" % (sc.TAG_PREFIX_IMAGE, imgUUID)]
lvm.changeLVTags(dom.sdUUID, volUUID, delTags=[sc.TAG_VOL_UNINIT],
addTags=mdTags)
try:
lvm.deactivateLVs(dom.sdUUID, [volUUID])
except se.CannotDeactivateLogicalVolume:
cls.log.warn("Cannot deactivate new created volume %s/%s",
dom.sdUUID, volUUID, exc_info=True)
return (dom.sdUUID, slot)
def test_lv_add_delete_tags(tmp_storage):
dev_size = 20 * 1024**3
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, activate=False)
lvm.changeLVTags(vg_name,
lv_name,
delTags=("initial-tag", ),
addTags=("new-tag-1", "new-tag-2"))
lv = lvm.getLV(vg_name, lv_name)
assert sorted(lv.tags) == ["new-tag-1", "new-tag-2"]
def test_lv_add_delete_tags(tmp_storage):
dev_size = 20 * 1024**3
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, activate=False)
lvm.changeLVTags(
vg_name,
lv_name,
delTags=("initial-tag",),
addTags=("new-tag-1", "new-tag-2"))
lv = lvm.getLV(vg_name, lv_name)
assert sorted(lv.tags) == ["new-tag-1", "new-tag-2"]
