diff options
| -rw-r--r-- | block/qcow2-cluster.c | 11 | ||||
| -rwxr-xr-x | tests/qemu-iotests/271 | 5 | ||||
| -rw-r--r-- | tests/qemu-iotests/271.out | 4 |
3 files changed, 17 insertions, 3 deletions
diff --git a/block/qcow2-cluster.c b/block/qcow2-cluster.c index 9917e5c28c..c1c43a891b 100644 --- a/block/qcow2-cluster.c +++ b/block/qcow2-cluster.c @@ -1403,6 +1403,17 @@ static int handle_dependencies(BlockDriverState *bs, uint64_t guest_offset, continue; } + if (old_alloc->keep_old_clusters && + (end <= l2meta_cow_start(old_alloc) || + start >= l2meta_cow_end(old_alloc))) + { + /* + * Clusters intersect but COW areas don't. And cluster itself is + * already allocated. So, there is no actual conflict. + */ + continue; + } + /* Conflict */ if (start < old_start) { diff --git a/tests/qemu-iotests/271 b/tests/qemu-iotests/271 index 599b849cc6..2775b4d130 100755 --- a/tests/qemu-iotests/271 +++ b/tests/qemu-iotests/271 @@ -893,7 +893,10 @@ EOF } _make_test_img -o extended_l2=on 1M -_concurrent_io | $QEMU_IO | _filter_qemu_io +# Second and third writes in _concurrent_io() are independent and may finish in +# different order. So, filter offset out to match both possible variants. +_concurrent_io | $QEMU_IO | _filter_qemu_io | \ + $SED -e 's/\(20480\|40960\)/OFFSET/' _concurrent_verify | $QEMU_IO | _filter_qemu_io # success, all done diff --git a/tests/qemu-iotests/271.out b/tests/qemu-iotests/271.out index 81043ba4d7..5be780de76 100644 --- a/tests/qemu-iotests/271.out +++ b/tests/qemu-iotests/271.out @@ -719,8 +719,8 @@ blkdebug: Suspended request 'A' blkdebug: Resuming request 'A' wrote 2048/2048 bytes at offset 30720 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -wrote 2048/2048 bytes at offset 20480 +wrote 2048/2048 bytes at offset OFFSET 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) -wrote 2048/2048 bytes at offset 40960 +wrote 2048/2048 bytes at offset OFFSET 2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) *** done |