btrfs-progs/tests/mkfs-tests/002-no-force-mixed-on-small-volume/test.sh

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#!/bin/bash
#
# Verify that we do not force mixed block groups on small volumes anymore
source $TOP/tests/common
check_prereq mkfs.btrfs
setup_root_helper
run_check truncate -s 512M $IMAGE
mixed=$(run_check_stdout $TOP/mkfs.btrfs -n 64k -f $IMAGE | egrep 'Data|Metadata')
echo "$mixed" | grep -q -v 'Data+Metadata:' || _fail "unexpected: created a mixed-bg filesystem"