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#!/bin/bash
# recognize partitioned loop devices
source "$TEST_TOP/common"
if ! losetup --help | grep -q 'partscan'; then
_not_run "losetup --partscan not available"
exit 0
fi
check_prereq mkfs.btrfs
setup_root_helper
_mktemp_local img
cp partition-1g-1g img
run_check truncate -s2g img
loopdev=$(run_check_stdout $SUDO_HELPER losetup --partscan --find --show img)
base=$(basename "$loopdev")
# expect partitions named like loop0p1 etc
for looppart in $(ls /dev/"$base"?*); do
run_check $SUDO_HELPER "$TOP/mkfs.btrfs" -f "$looppart"
run_check $SUDO_HELPER "$TOP/btrfs" inspect-internal dump-super "$looppart"
done
# cleanup
run_check $SUDO_HELPER losetup -d "$loopdev"
rm img
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