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Swap COW for all CowVMs, not only AppVM

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This commit is contained in:
Marek Marczykowski 2011-03-11 01:55:29 +01:00
parent 3043a391e0
commit 8928e55215
1 changed files with 14 additions and 12 deletions
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26
dom0/qvm-core/qubes.py
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@ -862,6 +862,7 @@ class QubesCowVm(QubesVm):
private_img if private_img is not None else default_private_img)
self.rootcow_img = dir_path + "/" + default_rootcow_img
self.swapcow_img = dir_path + "/" + default_swapcow_img
def set_updateable(self):
if self.is_updateable():
@ -872,6 +873,7 @@ class QubesCowVm(QubesVm):
if not self.template_vm.is_updateable():
self.updateable = True
self.reset_cow_storage()
self.reset_swap_cow_storage()
else:
# Temaplate VM is Updatable itself --> can't make the AppVM updateable too
# as this would cause COW-backed storage incoherency
@ -957,6 +959,8 @@ class QubesCowVm(QubesVm):
if not self.is_updateable():
self.reset_cow_storage()
self.reset_swap_cow_storage()
return super(QubesCowVm, self).start(debug_console=debug_console, verbose=verbose, preparing_dvm=preparing_dvm)
def reset_cow_storage (self):
@ -977,6 +981,16 @@ class QubesCowVm(QubesVm):
f_cow.close ()
f_root.close()
def reset_swap_cow_storage (self):
print "--> Resetting the swap COW storage: {0}...".format (self.swapcow_img)
if os.path.exists (self.swapcow_img):
os.remove (self.swapcow_img)
f_swap_cow = open (self.swapcow_img, "w")
f_swap_cow.truncate (swap_cow_sz)
f_swap_cow.close()
def remove_from_disk(self):
if dry_run:
return
@ -1331,8 +1345,6 @@ class QubesAppVm(QubesCowVm):
super(QubesAppVm, self).__init__(**kwargs)
dir_path = self.dir_path
self.swapcow_img = dir_path + "/" + default_swapcow_img
if "firewall_conf" not in kwargs or kwargs["firewall_conf"] is None:
kwargs["firewall_conf"] = dir_path + "/" + default_firewall_conf_file
@ -1345,7 +1357,6 @@ class QubesAppVm(QubesCowVm):
def set_updateable(self):
super(QubesAppVm, self).set_updateable()
self.reset_swap_cow_storage()
def create_on_disk(self, verbose):
if dry_run:
@ -1467,15 +1478,6 @@ class QubesAppVm(QubesCowVm):
return super(QubesAppVm, self).start(debug_console=debug_console, verbose=verbose, preparing_dvm=preparing_dvm)
def reset_swap_cow_storage (self):
print "--> Resetting the swap COW storage: {0}...".format (self.swapcow_img)
if os.path.exists (self.swapcow_img):
os.remove (self.swapcow_img)
f_swap_cow = open (self.swapcow_img, "w")
f_swap_cow.truncate (swap_cow_sz)
f_swap_cow.close()
class QubesVmCollection(dict):
"""
A collection of Qubes VMs indexed by Qubes id (qid)