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gguf-py : handle cross-filesystem file range copies

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Francis Couture-Harpin
2025-09-09 11:04:44 -04:00
parent 34f37c283b
commit 34680f07d2
1 changed files with 7 additions and 1 deletions
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8
gguf-py/gguf/lazy.py
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@@ -360,7 +360,13 @@ def copy_tensor_ranges(t: LazyNumpyTensor, fout: BufferedWriter):
dst_offset += r.size - extra_size
else:
# not trying to use reflinks, but still using os.copy_file_range for speed
os.copy_file_range(src.fileno(), fout.fileno(), r.size, r.offset, dst_offset)
try:
os.copy_file_range(src.fileno(), fout.fileno(), r.size, r.offset, dst_offset)
except OSError:
# fallback when there's a problem (e.g. cross-filesystem copies)
src.seek(r.offset)
fout.seek(dst_offset)
shutil.copyfileobj(src, fout, r.size)
dst_offset += r.size
else:
# not using reflinks, fallback when os.copy_file_range is not supported