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Code Issues Releases Wiki Activity

detect sparse support by fs

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This commit is contained in:
Thomas Waldmann 2020-12-25 23:03:07 +01:00
parent c0c0da9c76
commit 37a7436ff9
1 changed files with 19 additions and 2 deletions
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21
src/borg/testsuite/chunker_pytest.py
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@ -1,5 +1,6 @@
from io import BytesIO
import os
import tempfile
import pytest
@ -65,7 +66,23 @@ def make_content(sparsemap, header_size=0):
return content
@pytest.mark.skipif(not has_seek_hole)
def fs_supports_sparse():
if not has_seek_hole:
return False
with tempfile.TemporaryDirectory() as tmpdir:
fn = os.path.join(tmpdir, 'test_sparse')
make_sparsefile(fn, [(0, BS, False), (BS, BS, True)])
with open(fn, 'rb') as f:
try:
offset_hole = f.seek(0, os.SEEK_HOLE)
offset_data = f.seek(0, os.SEEK_DATA)
except OSError:
# no sparse support if these seeks do not work
return False
return offset_hole == 0 and offset_data == BS
@pytest.mark.skipif(not fs_supports_sparse(), reason='fs does not support sparse files')
@pytest.mark.parametrize("fname, sparse_map", [
('sparse1', map_sparse1),
('sparse2', map_sparse2),
@ -91,7 +108,7 @@ def get_sparsemap_fd(fname):
assert get_sparsemap_fd(fn) == sparse_map
@pytest.mark.skipif(not has_seek_hole)
@pytest.mark.skipif(not fs_supports_sparse(), reason='fs does not support sparse files')
@pytest.mark.parametrize("fname, sparse_map, header_size, sparse", [
('sparse1', map_sparse1, 0, False),
('sparse1', map_sparse1, 0, True),