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qemu-iotests: Test unknown qcow2 header extensions

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The immportant thing here is that header extensions don't get silently
dropped when the header is rewritten, e.g. during a rebase.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Kevin Wolf 2012-02-16 16:55:01 +01:00
parent 6e19b3c4e0
commit f394f1feb9
3 changed files with 149 additions and 0 deletions
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tests/qemu-iotests/031.out Normal file
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QA output created by 031
=== Create image with unknown header extension ===
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 cluster_size=65536
magic 0x514649fb
version 2
backing_file_offset 0x0
backing_file_size 0x0
cluster_bits 16
size 67108864
crypt_method 0
l1_size 1
l1_table_offset 0x30000
refcount_table_offset 0x10000
refcount_table_clusters 1
nb_snapshots 0
snapshot_offset 0x0
Header extension:
magic 0x12345678
length 31
data 'This is a test header extension'
No errors were found on the image.
=== Rewrite header with no backing file ===
magic 0x514649fb
version 2
backing_file_offset 0x0
backing_file_size 0x0
cluster_bits 16
size 67108864
crypt_method 0
l1_size 1
l1_table_offset 0x30000
refcount_table_offset 0x10000
refcount_table_clusters 1
nb_snapshots 0
snapshot_offset 0x0
Header extension:
magic 0x12345678
length 31
data 'This is a test header extension'
No errors were found on the image.
=== Add a backing file and format ===
magic 0x514649fb
version 2
backing_file_offset 0x90
backing_file_size 0x17
cluster_bits 16
size 67108864
crypt_method 0
l1_size 1
l1_table_offset 0x30000
refcount_table_offset 0x10000
refcount_table_clusters 1
nb_snapshots 0
snapshot_offset 0x0
Header extension:
magic 0xe2792aca
length 11
data 'host_device'
Header extension:
magic 0x12345678
length 31
data 'This is a test header extension'
*** done