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storage: reset_volatile_storage doesn't need source_template parameter

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It shouldn't touch anything not already known to the VM object.
This commit is contained in:
Marek Marczykowski-Górecki 2016-02-10 17:02:36 +01:00 committed by Wojtek Porczyk
parent 5f48b76b27
commit c1bab3d094
2 changed files with 20 additions and 23 deletions
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16
qubes/storage/__init__.py
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@ -219,7 +219,7 @@ class Storage(object):
os.mkdir(self.vm.dir_path)
self.create_on_disk_private_img(source_template)
self.create_on_disk_root_img(source_template)
self.reset_volatile_storage(source_template)
self.reset_volatile_storage()
os.umask(old_umask)
@ -285,14 +285,14 @@ class Storage(object):
shutil.rmtree(self.vm.dir_path)
def reset_volatile_storage(self, source_template=None):
if source_template is None:
source_template = self.vm.template
def reset_volatile_storage(self):
# Re-create only for template based VMs
if source_template is not None and self.volatile_img:
if os.path.exists(self.volatile_img):
os.remove(self.volatile_img)
try:
if self.vm.template is not None and self.volatile_img:
if os.path.exists(self.volatile_img):
os.remove(self.volatile_img)
except AttributeError: # self.vm.template
pass
# For StandaloneVM create it only if not already exists
# (eg after backup-restore)

27
qubes/storage/xen.py
View File

@ -226,23 +226,19 @@ class XenStorage(qubes.storage.Storage):
os.umask(old_umask)
def reset_volatile_storage(self, source_template=None):
if source_template is None:
source_template = self.vm.template
def reset_volatile_storage(self):
try:
# no template set, in any way (Standalone VM, Template VM)
if self.vm.template is None:
raise AttributeError
if source_template is not None:
# template-based VM with only one device-mapper layer -
# template-based HVM with only one device-mapper layer -
# volatile.img used as upper layer on root.img, no root-cow.img
# intermediate layer
# XXX marmarek says this is either always true or always false;
# rootcow_img got smashed in 35cb82 (#1573)
# this may have remain after HVM check
# this probably should have happen anyway
if not source_template.storage.rootcow_img:
if self.vm.hvm:
if os.path.exists(self.volatile_img):
if self.vm.debug:
if os.path.getmtime(source_template.storage.root_img) \
if os.path.getmtime(self.vm.template.storage.root_img) \
> os.path.getmtime(self.volatile_img):
self.vm.log.warning(
'Template have changed, resetting root.img')
@ -258,16 +254,17 @@ class XenStorage(qubes.storage.Storage):
# FIXME stat on f_root; with open() ...
f_volatile = open(self.volatile_img, "w")
f_root = open(source_template.storage.root_img, "r")
f_root = open(self.vm.template.storage.root_img, "r")
# make empty sparse file of the same size as root.img
f_root.seek(0, os.SEEK_END)
f_volatile.truncate(f_root.tell())
f_volatile.close()
f_root.close()
return # XXX why is that? super() does not run
except AttributeError: # self.vm.template
pass
super(XenStorage, self).reset_volatile_storage(
source_template=source_template)
super(XenStorage, self).reset_volatile_storage()
def prepare_for_vm_startup(self):