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| author | Max Reitz <mreitz@redhat.com> | 2020-12-07 16:22:45 +0100 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2020-12-11 17:52:40 +0100 |
| commit | f0947dc694e57d6ecb0f5ac3d684bcce8952cdff (patch) | |
| tree | 6c95c5f4a7cd012c82aad074c4db62533f541eaf /tests/qemu-iotests/221 | |
| parent | eb43ea16dcb7e6ab01db321b5edac3e593556e7d (diff) | |
iotests/221: Discard image before qemu-img map
See the new comment for why this should be done.
I do not have a reproducer on master, but when using FUSE block exports,
this test breaks depending on the underlying filesystem (for me, it
works on tmpfs, but fails on xfs, because the block allocated by
file-posix has 16 kB there instead of 4 kB).
Suggested-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-Id: <20201207152245.66987-1-mreitz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'tests/qemu-iotests/221')
| -rwxr-xr-x | tests/qemu-iotests/221 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tests/qemu-iotests/221 b/tests/qemu-iotests/221 index ca62b3baa1..7e6086b205 100755 --- a/tests/qemu-iotests/221 +++ b/tests/qemu-iotests/221 @@ -46,6 +46,13 @@ echo "=== Check mapping of unaligned raw image ===" echo _make_test_img 65537 # qemu-img create rounds size up + +# file-posix allocates the first block of any images when it is created; +# the size of this block depends on the host page size and the file +# system block size, none of which are constant. Discard the whole +# image so we will not see this allocation in qemu-img map's output. +$QEMU_IO -c 'discard 0 65537' "$TEST_IMG" | _filter_qemu_io + $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map truncate --size=65537 "$TEST_IMG" # so we resize it and check again |