import pbs
from pbs import dd
+from clint.textui import progress
class DiskError(Exception):
device.destroy()
+def progress_generator(total):
+ position = 0;
+ for i in progress.bar(range(total)):
+ if i < position:
+ continue
+ position = yield
+
+
class DiskDevice(object):
"""This class represents a block device hosting an Operating System
as created by the device-mapper.
"""Create a new DiskDevice."""
self.device = device
self.bootable = bootable
+ self.progress_bar = None
self.g = guestfs.GuestFS()
+ self.g.add_drive_opts(device, readonly=0)
- self.g.set_trace(1)
+ #self.g.set_trace(1)
+ #self.g.set_verbose(1)
- self.g.add_drive_opts(device, readonly=0)
+ eh = self.g.set_event_callback(self.progress_callback, guestfs.EVENT_PROGRESS)
self.g.launch()
+ self.g.delete_event_callback(eh)
+
roots = self.g.inspect_os()
if len(roots) == 0:
raise DiskError("No operating system found")
# Close the guestfs handler
self.g.close()
+ def progress_callback(self, ev, eh, buf, array):
+ position = array[2]
+ total = array[3]
+
+ if self.progress_bar is None:
+ self.progress_bar = progress_generator(total)
+ self.progress_bar.next()
+ if position == 1:
+ return
+
+ self.progress_bar.send(position)
+
+ if position == total:
+ self.progress_bar = None
+
def mount(self):
"""Mount all disk partitions in a correct order."""
mps = self.g.inspect_get_mountpoints(self.root)