[PATCH 00/15] storage_file_probe: Fix ancient bug in qcow2 header extensions parser and refactor the image probing callbacks
Patch 3 fixes an almost 15 year old bug in the qcow2 header extension
parser which breaks when the qcow2 image has more than 1 header
extension. For us it caused problems for qcow2 images with data file and
backing file which we didn't use before, and the only field we cared
about was always put first by qemu.
Ironically we did have a test file that had such config but it was
missed in the test output.
Patches 1, 2 are refinment of debug tools I used to see what's
happening.
Patch 4 adds bitmaps to some test images. We don't parse them but just
to be sure.
The rest of the series refactors the metadata parser callbacks with the
end goal to not parse the qcow2 header extensions twice.
Peter Krempa (15):
qcow2GetExtensions: Add debug logs for interesting fields in qcow2
header extension parser
virstoragetest: Reformat output to hilight dataFile relationship
storage_file_probe: qcow2GetExtensions: Fix qcow2 header extension
parsing
virstoragetest: Add qcow2 bitmaps to some images
storage_file_probe: Add image specific callback taking the whole
virStorageSource
storage_file_probe: Refactor cowGetBackingStore into
cowGetImageSpecific
storage_file_probe: Refactor qedGetBackingStore into
qedGetImageSpecific
storage_file_probe: Refactor vmdk4GetBackingStore into
vmdk4GetImageSpecific
storage_file_probe: Refactor qcowXGetBackingStore into specific
callbacks for qcow and qcow2
storage_file_probe: Move logic from qcow2GetClusterSize to
qcow2GetImageSpecific
storage_file_probe: Move qcow2GetFeatures(ProcessGroup) functions
storage_file_probe: Call qcow2GetFeatures from qcow2GetImageSpecific
storage_file_probe: Parse all qcow2 extensions at once
storage_file_probe: Move setting of 'compat' attribute to
qcow2GetFeatures
storage_file_probe: Remove unused image probing callbacks
src/storage_file/storage_file_probe.c | 439 ++++++++----------
tests/virstoragetest.c | 20 +-
.../virstoragetestdata/images/datafile.qcow2 | Bin 327680 -> 393256 bytes
.../images/qcow2_qcow2-qcow2_qcow2-auto.qcow2 | Bin 196616 -> 327720 bytes
.../images/qcow2datafile-datafile.qcow2 | Bin 196616 -> 327720 bytes
tests/virstoragetestdata/out/directory-dir | 1 +
tests/virstoragetestdata/out/directory-none | 1 +
tests/virstoragetestdata/out/directory-raw | 1 +
.../out/qcow2-auto_qcow2-qcow2_raw-raw | 1 +
.../out/qcow2-auto_raw-raw-relative | 1 +
tests/virstoragetestdata/out/qcow2-datafile | 15 +-
.../out/qcow2-protocol-backing-file | 2 +
.../out/qcow2-protocol-backing-nbd | 2 +
.../out/qcow2-qcow2_nbd-raw | 2 +
.../out/qcow2-qcow2_qcow2-auto | 2 +
.../out/qcow2-qcow2_qcow2-qcow2_qcow2-auto | 3 +
.../out/qcow2-qcow2_qcow2-qcow2_raw-auto | 3 +
.../out/qcow2-qcow2_qcow2-qcow2_raw-raw | 3 +
.../out/qcow2-qcow2_raw-raw-relative | 2 +
tests/virstoragetestdata/out/qcow2-symlinks | 3 +
.../out/qcow2datafile-qcow2_qcow2-datafile | 24 +-
tests/virstoragetestdata/out/qed-auto_raw | 1 +
tests/virstoragetestdata/out/qed-qed_raw | 2 +
tests/virstoragetestdata/out/raw-auto | 1 +
tests/virstoragetestdata/out/raw-raw | 1 +
25 files changed, 263 insertions(+), 267 deletions(-)
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2.49.0