Fix VDI reads across allocation blocks - #89
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Fixes multi-block reads in
VDIStream.The existing
read_lencalculation always evaluates to the full remaining length. As a result, a read spanning multiple VDI blocks can continue reading linearly from the physical block selected for the first logical block, instead of consulting the VDI allocation map for each block.Limit each iteration to the remainder of the current VDI block so subsequent blocks are mapped independently.
Adds a regression test using non-contiguous physical block mappings.
Tested with:
py -m tox -e py3— 58 passedpy -m tox -e lint— passed