reworking block skipper

zfs_autobackup/BlockHasher.py

@@ -61,14 +61,9 @@ class BlockHasher():
 
         yields nothing for empty files.
         """
-        with os.open(fname, os.O_RDONLY) as fh:
-            print (os.lseek(fh, 0, os.SEEK_END))
 
 
-        with os.openopen(fname, "rb") as fh:
-
-            # print(os.path.getsize(fname))
-            print(os.lseek(fh, 0, os.SEEK_END))
+        with open(fname, "rb") as fh:
 
             fsize = fh.seek(0, os.SEEK_END)
             fh.seek(0)

zfs_autobackup/ZfsCheck.py

@@ -39,7 +39,7 @@ class ZfsCheck(CliBase):
         group.add_argument('--check', '-c', metavar="FILE", default=None, const=True, nargs='?',
                            help="Read hashes from STDIN (or FILE) and compare them")
 
-        group.add_argument('--skip', '-s', metavar="NUMBER", default=0, type=float,
+        group.add_argument('--skip', '-s', metavar="NUMBER", default=0, type=int,
                            help="Skip this number of chunks after every hash. %(default)s")
 
         return parser