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Use clean-volatile.img.tar instead of unpacked one (#118)

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"tar x" is much faster than cp on sparse file
This commit is contained in:
Marek Marczykowski 2011-03-19 17:05:00 -04:00
parent a6ee9d66f5
commit bc383b692d
1 changed files with 6 additions and 8 deletions
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14
dom0/qvm-core/qubes.py
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@ -61,7 +61,7 @@ vm_default_netmask = "255.255.0.0"
default_root_img = "root.img"
default_rootcow_img = "root-cow.img"
default_volatile_img = "volatile.img"
default_clean_volatile_img = "clean-volatile.img"
default_clean_volatile_img = "clean-volatile.img.tar"
default_private_img = "private.img"
default_appvms_conf_file = "appvm-template.conf"
default_netvms_conf_file = "netvm-template.conf"
@ -899,11 +899,10 @@ class QubesTemplateVm(QubesVm):
if os.path.exists (self.volatile_img):
os.remove (self.volatile_img)
# We prefer to use Linux's cp, because it nicely handles sparse files
retcode = subprocess.call (["cp", self.clean_volatile_img, self.volatile_img])
retcode = subprocess.call (["tar", "xf", self.clean_volatile_img, "-C", self.dir_path])
if retcode != 0:
raise IOError ("Error while copying {0} to {1}".\
format(self.clean_volatile_img, self.volatile_img))
raise IOError ("Error while unpacking {0} to {1}".\
format(self.template_vm.clean_volatile_img, self.volatile_img))
def commit_changes (self):
@ -1100,10 +1099,9 @@ class QubesCowVm(QubesVm):
if os.path.exists (self.volatile_img):
os.remove (self.volatile_img)
# We prefer to use Linux's cp, because it nicely handles sparse files
retcode = subprocess.call (["cp", self.template_vm.clean_volatile_img, self.volatile_img])
retcode = subprocess.call (["tar", "xf", self.template_vm.clean_volatile_img, "-C", self.dir_path])
if retcode != 0:
raise IOError ("Error while copying {0} to {1}".\
raise IOError ("Error while unpacking {0} to {1}".\
format(self.template_vm.clean_volatile_img, self.volatile_img))
def remove_from_disk(self):