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btrfs-progs: tests/mkfs: verify that mkfs.btrfs rootdir+shrink behaves correctly

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Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Qu Wenruo 2017-11-29 16:58:43 +08:00 committed by David Sterba
parent 1733989352
commit 0ba347f315
1 changed files with 39 additions and 0 deletions
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39
tests/mkfs-tests/012-rootdir-no-shrink/test.sh Executable file
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#!/bin/bash
# Test if mkfs.btrfs --rootdir will skip shrinking correctly
source "$TOP/tests/common"
check_prereq mkfs.btrfs
setup_root_helper
fs_size=$((512 * 1024 * 1024))
bs=$((1024 * 1024))
tmp=$(mktemp -d --tmpdir btrfs-progs-mkfs.rootdirXXXXXXX)
prepare_test_dev $fs_size
# No shrink case
run_check "$TOP/mkfs.btrfs" -f --rootdir "$tmp" "$TEST_DEV"
run_check_mount_test_dev
# We should be able to write at least half of the fs size data since the fs is
# not shrunk
run_check $SUDO_HELPER dd if=/dev/zero bs=$bs count=$(($fs_size / $bs / 2)) \
of="$TEST_MNT/file"
run_check_umount_test_dev
# Shrink case
run_check "$TOP/mkfs.btrfs" -f --rootdir "$tmp" --shrink "$TEST_DEV"
run_check_mount_test_dev
run_mustfail "mkfs.btrfs for shrink rootdir" \
$SUDO_HELPER dd if=/dev/zero bs=$bs count=$(($fs_size / $bs / 2)) \
of="$TEST_MNT/file"
run_check_umount_test_dev
rm -rf -- "$tmp"