def _extract_bytes(self, details):
# Replace it with the byte amount
real_size = self.SIZE_RE.search(details)
if not real_size:
raise ValueError(_('Invalid input value "%s".') % details)
magnitude = real_size.group(1)
unit_of_measure = real_size.group(2)
bytes_info = real_size.group(3)
if bytes_info:
return int(real_size.group(4))
elif not unit_of_measure:
return int(magnitude)
return strutils.string_to_bytes('%s%sB' % (magnitude, unit_of_measure),
return_int=True)
def _calculate_count(size_in_m, blocksize):
# Check if volume_dd_blocksize is valid
try:
# Rule out zero-sized/negative/float dd blocksize which
# cannot be caught by strutils
if blocksize.startswith(('-', '0')) or '.' in blocksize:
raise ValueError
bs = strutils.string_to_bytes('%sB' % blocksize)
except ValueError:
msg = (_("Incorrect value error: %(blocksize)s, "
"it may indicate that \'volume_dd_blocksize\' "
"was configured incorrectly. Fall back to default.")
% {'blocksize': blocksize})
LOG.warn(msg)
# Fall back to default blocksize
CONF.clear_override('volume_dd_blocksize')
blocksize = CONF.volume_dd_blocksize
bs = strutils.string_to_bytes('%sB' % blocksize)
count = math.ceil(size_in_m * units.Mi / bs)
return blocksize, int(count)
def _extract_bytes(self, details):
# Replace it with the byte amount
real_size = self.SIZE_RE.search(details)
if not real_size:
raise ValueError(_('Invalid input value "%s".') % details)
magnitude = real_size.group(1)
unit_of_measure = real_size.group(2)
bytes_info = real_size.group(3)
if bytes_info:
return int(real_size.group(4))
elif not unit_of_measure:
return int(magnitude)
return strutils.string_to_bytes('%s%sB' % (magnitude, unit_of_measure),
return_int=True)
def _calculate_count(size_in_m, blocksize):
# Check if volume_dd_blocksize is valid
try:
# Rule out zero-sized/negative/float dd blocksize which
# cannot be caught by strutils
if blocksize.startswith(('-', '0')) or '.' in blocksize:
raise ValueError
bs = strutils.string_to_bytes('%sB' % blocksize)
except ValueError:
msg = (_("Incorrect value error: %(blocksize)s, "
"it may indicate that \'volume_dd_blocksize\' "
"was configured incorrectly. Fall back to default.") % {
'blocksize': blocksize
})
LOG.warn(msg)
# Fall back to default blocksize
CONF.clear_override('volume_dd_blocksize')
blocksize = CONF.volume_dd_blocksize
bs = strutils.string_to_bytes('%sB' % blocksize)
count = math.ceil(size_in_m * units.MiB / bs)
return blocksize, int(count)