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#!/bin/bash
# create a base image, convert to btrfs, remove all files, rollback the ext4 image
# note: ext4 only
source "$TEST_TOP/common"
source "$TEST_TOP/common.convert"
setup_root_helper
prepare_test_dev
check_prereq btrfs-convert
check_global_prereq mke2fs
# simple wrapper for a convert test
# $1: btrfs features, argument to -O
# $2: message
# $3: nodesize value
# $4 + rest: command to create the ext2 image
do_test() {
local features
local msg
local nodesize
local CHECKSUMTMP
local here
features="$1"
msg="$2"
nodesize="$3"
shift 3
convert_test_preamble "$features" "$msg" "$nodesize" "$@"
convert_test_prep_fs ext4 "$@"
populate_fs
CHECKSUMTMP=$(mktemp --tmpdir btrfs-progs-convert.XXXXXXXXXX)
convert_test_gen_checksums "$CHECKSUMTMP"
run_check_umount_test_dev
convert_test_do_convert "$features" "$nodesize"
run_check_mount_test_dev
convert_test_post_check_checksums "$CHECKSUMTMP"
here=$(pwd)
cd "$TEST_MNT" || _fail "cannot cd to TEST_MNT"
# ext2_saved/image must not be deleted
run_mayfail $SUDO_HELPER find "$TEST_MNT"/ -mindepth 1 -path '*ext2_saved' -prune -o -exec rm -vrf "{}" \;
cd "$here"
run_check "$TOP/btrfs" filesystem sync "$TEST_MNT"
run_check_umount_test_dev
convert_test_post_rollback ext4
run_check_mount_convert_dev ext4
convert_test_post_check_checksums "$CHECKSUMTMP"
run_check_umount_test_dev
# mount again and verify checksums
run_check_mount_convert_dev ext4
convert_test_post_check_checksums "$CHECKSUMTMP"
run_check_umount_test_dev
rm "$CHECKSUMTMP"
}
for feature in '' 'extref' 'skinny-metadata' 'no-holes'; do
do_test "$feature" "ext4 4k nodesize" 4096 mke2fs -t ext4 -b 4096
do_test "$feature" "ext4 8k nodesize" 8192 mke2fs -t ext4 -b 4096
do_test "$feature" "ext4 16k nodesize" 16384 mke2fs -t ext4 -b 4096
do_test "$feature" "ext4 32k nodesize" 32768 mke2fs -t ext4 -b 4096
do_test "$feature" "ext4 64k nodesize" 65536 mke2fs -t ext4 -b 4096
done
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