nfstest.utils(3)

class SparseFile(baseobj.BaseObj)

SparseFile object
SparseFile() -> New sparse file object
Usage:
    # Create definition for a sparse file of size 10000 having
    # two holes of size 1000 at offsets 3000 and 6000
    x = SparseFile("/mnt/t/file1", 10000, [3000, 6000], 1000)
    # Object attributes defined after creation using the above
    # sample data:
    # endhole: set to True if the file ends with a hole
    # Above example ends with data so,
    # x.endhole = False
    # data_offsets: list of data segment offsets
    # x.data_offsets = [0, 4000, 7000]
    # hole_offsets: list of hole segment offsets including the
    #   implicit hole at the end of the file
    # x.hole_offsets = [3000, 6000, 10000]
    # sparse_data: list of data/hole segments, each item in the list
    #   has the following format [offset, size, type]
    # x.sparse_data = [[0, 3000, 1], [3000, 1000, 0], [4000, 2000, 1],
    #                  [6000, 1000, 0], [7000, 3000, 1]]

Methods defined here: ---------------------

__init__(self, absfile, file_size, hole_list, hole_size) Create sparse file object definition, the file is not created just the object. Object attributes are defined which makes it easy to create the actual file.