[PATCH 0/2] storage_file: Fix probing of backing images with 'data_file' with auto-probed format

5 Aug 2026


      Patch 1 adds an counter-example test and patch 2 then fixes the bug.

Peter Krempa (2):
  virstoragetest: Add example of a qcow2 image with a backing image
    pointing to a data_file without 'backing_format'
  virStorageSourceGetMetadataRecurse: Fix format probing exception for
    images with 'data_file'

 src/storage_file/storage_source.c              |   3 ++-
 tests/virstoragetest.c                         |   7 ++++++-
 .../images/qcow2_datafile-auto.qcow2           | Bin 0 -> 196616 bytes
 3 files changed, 8 insertions(+), 2 deletions(-)
 create mode 100644 tests/virstoragetestdata/images/qcow2_datafile-auto.qcow2

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2.55.0