def writelines(self, lines):
currentMetadata = set(self.readlines())
newMetadata = set(lines)
# Remove all items that do not exist in the new metadata
toRemove = [self.METADATA_TAG_PREFIX + lvmTagEncode(item) for item in currentMetadata.difference(newMetadata)]
# Add all missing items that do no exist in the old metadata
toAdd = [self.METADATA_TAG_PREFIX + lvmTagEncode(item) for item in newMetadata.difference(currentMetadata)]
if len(toAdd) == 0 and len(toRemove) == 0:
return
self.log.debug("Updating metadata adding=%s removing=%s", ", ".join(toAdd), ", ".join(toRemove))
lvm.changeVGTags(self._vgName, delTags=toRemove, addTags=toAdd)
def writelines(self, lines):
currentMetadata = set(self.readlines())
newMetadata = set(lines)
# Remove all items that do not exist in the new metadata
toRemove = [self.METADATA_TAG_PREFIX + lvmTagEncode(item) for item in
currentMetadata.difference(newMetadata)]
# Add all missing items that do no exist in the old metadata
toAdd = [self.METADATA_TAG_PREFIX + lvmTagEncode(item) for item in
newMetadata.difference(currentMetadata)]
if len(toAdd) == 0 and len(toRemove) == 0:
return
self.log.debug("Updating metadata adding=%s removing=%s",
", ".join(toAdd), ", ".join(toRemove))
lvm.changeVGTags(self._vgName, delTags=toRemove, addTags=toAdd)