Take @ssgelm's advice in #155 and copy the mount table

df warnings no more :-)

bootstrapvz/common/task_groups.py

@@ -74,6 +74,8 @@ boot_partition_group = [filesystem.CreateBootMountDir,
 mounting_group = [filesystem.CreateMountDir,
                   filesystem.MountRoot,
                   filesystem.MountSpecials,
+                  filesystem.CopyMountTable,
+                  filesystem.RemoveMountTable,
                   filesystem.UnmountRoot,
                   filesystem.DeleteMountDir,
                   ]

bootstrapvz/common/tasks/filesystem.py

@@ -115,6 +115,18 @@ class MountSpecials(Task):
 		root.add_mount('none', 'dev/pts', ['--types', 'devpts'])
 
 
+class CopyMountTable(Task):
+	description = 'Copying mtab from host system'
+	phase = phases.os_installation
+	predecessors = [MountSpecials]
+
+	@classmethod
+	def run(cls, info):
+		import shutil
+		import os.path
+		shutil.copy('/proc/mounts', os.path.join(info.root, 'etc/mtab'))
+
+
 class UnmountRoot(Task):
 	description = 'Unmounting the bootstrap volume'
 	phase = phases.volume_unmounting
@@ -125,6 +137,17 @@ class UnmountRoot(Task):
 		info.volume.partition_map.root.unmount()
 
 
+class RemoveMountTable(Task):
+	description = 'Removing mtab'
+	phase = phases.volume_unmounting
+	successors = [UnmountRoot]
+
+	@classmethod
+	def run(cls, info):
+		import os
+		os.remove(os.path.join(info.root, 'etc/mtab'))
+
+
 class DeleteMountDir(Task):
 	description = 'Deleting mountpoint for the bootstrap volume'
 	phase = phases.volume_unmounting