Example #1
0
 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)
Example #2
0
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)
Example #3
0
 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)
Example #4
0
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)