diff options
Diffstat (limited to 'tests/qemu-iotests/common.rc')
| -rw-r--r-- | tests/qemu-iotests/common.rc | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc index 237f746af8..e977cb4eb6 100644 --- a/tests/qemu-iotests/common.rc +++ b/tests/qemu-iotests/common.rc @@ -996,6 +996,36 @@ _require_large_file() rm "$FILENAME" } +# Check whether disk_usage can be reliably used. +_require_disk_usage() +{ + local unusable=false + # ZFS triggers known failures on this front; it does not immediately + # allocate files, and then aggressively compresses writes even when full + # allocation was requested. + if [ -z "$TEST_IMG_FILE" ]; then + FILENAME="$TEST_IMG" + else + FILENAME="$TEST_IMG_FILE" + fi + if [ -e "FILENAME" ]; then + echo "unwilling to overwrite existing file" + exit 1 + fi + $QEMU_IMG create -f raw "$FILENAME" 5M > /dev/null + if [ $(disk_usage "$FILENAME") -gt $((1024*1024)) ]; then + unusable=true + fi + $QEMU_IMG create -f raw -o preallocation=full "$FILENAME" 5M > /dev/null + if [ $(disk_usage "$FILENAME") -lt $((4*1024*1024)) ]; then + unusable=true + fi + rm -f "$FILENAME" + if $unusable; then + _notrun "file system on $TEST_DIR does not handle sparse files nicely" + fi +} + # Check that a set of devices is available in the QEMU binary # _require_devices() |