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iotests/026: Test EIO on allocation in a data-file

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Test what happens when writing data to an external data file, where the
write requires an L2 entry to be allocated, but the data write fails.

Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20200225143130.111267-4-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Max Reitz 2020-02-25 15:31:30 +01:00 • committed by Kevin Wolf
parent 31ab00f374
commit 81311255f2
3 changed files with 44 additions and 0 deletions
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32
tests/qemu-iotests/026
View file

@ -30,6 +30,7 @@ _cleanup()
{ {
_cleanup_test_img _cleanup_test_img
rm "$TEST_DIR/blkdebug.conf" rm "$TEST_DIR/blkdebug.conf"
rm -f "$TEST_IMG.data_file"
} }
trap "_cleanup; exit \$status" 0 1 2 3 15 trap "_cleanup; exit \$status" 0 1 2 3 15
@ -239,6 +240,37 @@ $QEMU_IO -c "write 0 $CLUSTER_SIZE" "$BLKDBG_TEST_IMG" | _filter_qemu_io
_check_test_img _check_test_img
echo
echo === Avoid freeing external data clusters on failure ===
echo
# Similar test as the last one, except we test what happens when there
# is an error when writing to an external data file instead of when
# writing to a preallocated zero cluster
_make_test_img -o "data_file=$TEST_IMG.data_file" $CLUSTER_SIZE
# Put blkdebug above the data-file, and a raw node on top of that so
# that blkdebug will see a write_aio event and emit an error
$QEMU_IO -c "write 0 $CLUSTER_SIZE" \
"json:{
'driver': 'qcow2',
'file': { 'driver': 'file', 'filename': '$TEST_IMG' },
'data-file': {
'driver': 'raw',
'file': {
'driver': 'blkdebug',
'config': '$TEST_DIR/blkdebug.conf',
'image': {
'driver': 'file',
'filename': '$TEST_IMG.data_file'
}
}
}
}" \
| _filter_qemu_io
_check_test_img
# success, all done # success, all done
echo "*** done" echo "*** done"
rm -f $seq.full rm -f $seq.full

6
tests/qemu-iotests/026.out
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@ -653,4 +653,10 @@ wrote 1024/1024 bytes at offset 0
1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
write failed: Input/output error write failed: Input/output error
No errors were found on the image. No errors were found on the image.
=== Avoid freeing external data clusters on failure ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1024 data_file=TEST_DIR/t.IMGFMT.data_file
write failed: Input/output error
No errors were found on the image.
*** done *** done

6
tests/qemu-iotests/026.out.nocache
View file

@ -661,4 +661,10 @@ wrote 1024/1024 bytes at offset 0
1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) 1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
write failed: Input/output error write failed: Input/output error
No errors were found on the image. No errors were found on the image.
=== Avoid freeing external data clusters on failure ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1024 data_file=TEST_DIR/t.IMGFMT.data_file
write failed: Input/output error
No errors were found on the image.
*** done *** done