def __init__(self, data = None):
if data:
self.dva = []
dva_size = 16
for dva in split_records(data[0 : dva_size * 3], dva_size):
self.dva.append(self._parse_dva(dva))
su = StreamUnpacker(data[dva_size * 3 :])
i = su.uint64()
#see lib/libzfscommon/include/sys/spa.h
self.lsize = (get_bits(i, 0, 16) + 1) << SPA_MINBLOCKSHIFT
self.psize = (get_bits(i, 16, 16) + 1) << SPA_MINBLOCKSHIFT
self.comp = get_bits(i, 32, 8)
self.cksum = get_bits(i, 40, 8)
self.type = get_bits(i, 48, 8)
self.level = get_bits(i, 56, 5)
if get_bits(i, 63, 1):
self.endian = '<' # little endian
else:
self.endian = '>' # big
self.cksum = ['unknown', 'on', 'off', 'label', 'gang header', 'zilog', 'fletcher2', 'fletcher4', 'SHA-256'][self.cksum]
self.comp = ['unknown', 'on', 'off', 'lzjb'][self.comp]
self.type = self.type
su.rewind(-24) # skip 24b paddings
self.birth_txg, self.fill_count = su.repeat('uint64', 2)
self.checksum = []
for i in range(4):
self.checksum.append(su.uint64())
def __init__(self, data=None):
if data:
self.dva = []
dva_size = 16
for dva in split_records(data[0:dva_size * 3], dva_size):
self.dva.append(self._parse_dva(dva))
su = StreamUnpacker(data[dva_size * 3:])
i = su.uint64()
#see lib/libzfscommon/include/sys/spa.h
self.lsize = (get_bits(i, 0, 16) + 1) << SPA_MINBLOCKSHIFT
self.psize = (get_bits(i, 16, 16) + 1) << SPA_MINBLOCKSHIFT
self.comp = get_bits(i, 32, 8)
self.cksum = get_bits(i, 40, 8)
self.type = get_bits(i, 48, 8)
self.level = get_bits(i, 56, 5)
if get_bits(i, 63, 1):
self.endian = '<' # little endian
else:
self.endian = '>' # big
self.cksum = [
'unknown', 'on', 'off', 'label', 'gang header', 'zilog',
'fletcher2', 'fletcher4', 'SHA-256'
][self.cksum]
self.comp = ['unknown', 'on', 'off', 'lzjb'][self.comp]
self.type = self.type
su.rewind(-24) # skip 24b paddings
self.birth_txg, self.fill_count = su.repeat('uint64', 2)
self.checksum = []
for i in range(4):
self.checksum.append(su.uint64())
def _parse_dva(self, data):
dva = OODict()
su = StreamUnpacker(data)
i = su.uint64()
dva.asize = get_bits(i, 0, 24) << SPA_MINBLOCKSHIFT
dva.grid = get_bits(i, 24, 8)
dva.vdev = get_bits(i, 32, 32)
i = su.uint64()
dva.offset = get_bits(i, 0, 63) << SPA_MINBLOCKSHIFT
if get_bits(i, 63, 1):
dva.G = True
else:
dva.G = False
return dva
def _parse_dva(self, data):
dva = OODict()
su = StreamUnpacker(data)
i = su.uint64()
dva.asize = get_bits(i, 0, 24) << SPA_MINBLOCKSHIFT
dva.grid = get_bits(i, 24, 8)
dva.vdev = get_bits(i, 32, 32)
i = su.uint64()
dva.offset = get_bits(i, 0, 63) << SPA_MINBLOCKSHIFT
if get_bits(i, 63, 1):
dva.G = True
else:
dva.G = False
return dva
