WHY IS LVM THE WORST THING ON THIS PLANET

aif/disk/lvm_fallback.py

@@ -6,17 +6,53 @@ import aif.disk.mdadm_fallback as mdadm
 
 
 class PV(object):
-    def __init__(self, partobj):
+    def __init__(self, pv_xml, partobj):
+        self.xml = pv_xml
+        self.id = self.xml.attrib('id')
+        self.source = self.xml.attrib('source')
+        self.device = partobj
+        if not isinstance(self.device, (block.Disk,
+                                        block.Partition,
+                                        luks.LUKS,
+                                        mdadm.Array)):
+            raise ValueError(('partobj must be of type '
+                              'aif.disk.block.Disk, '
+                              'aif.disk.block.Partition, '
+                              'aif.disk.luks.LUKS, or'
+                              'aif.disk.mdadm.Array'))
+        # TODO
+        self.devpath = self.device.devpath
+        pass
+
+
+class LV(object):
+    def __init__(self, lv_xml, pv_objs, vg_obj):
+        self.xml = lv_xml
+        self.id = self.xml.attrib('id')
+        self.name = self.xml.attrib('name')
+        self.size = self.xml.attrib('size')  # Convert to bytes. Can get max from _BlockDev.lvm.vginfo(<VG>).free
+        self.pvs = pv_objs
+        self.vg = vg_obj
+        for p in self.pvs:
+            if not isinstance(p, PV):
+                raise ValueError('pv_objs must be a list-like containing aif.disk.lvm.PV items')
+        if not isinstance(self.vg, VG):
+            raise ValueError('vg_obj must be of type aif.disk.lvm.VG')
+        # TODO
         self.devpath = None
         pass
 
 
 class VG(object):
     def __init__(self, vg_xml, lv_objs):
+        self.xml = vg_xml
+        self.id = self.xml.attrib('id')
+        self.name = self.xml.attrib('name')
+        self.lvs = lv_objs
+        for l in self.lvs:
+            if not isinstance(l, LV):
+                raise ValueError('lv_objs must be a list-like containing aif.disk.lvm.LV items')
+        # TODO
         self.devpath = None
         pass
 
-
-class LV(object):
-    def __init__(self, lv_xml, pv_objs):
-        pass