| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (C) 2017 Synology Inc. All Rights Reserved. |
| # |
| # FS QA Test No. btrfs/134 |
| # |
| # Test that an incremental send operation works after moving a directory into |
| # a new parent directory, deleting its previous parent directory and creating |
| # a new inode that has the same inode number as the old parent. |
| # |
| seq=`basename $0` |
| seqres=$RESULT_DIR/$seq |
| echo "QA output created by $seq" |
| |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| _cleanup() |
| { |
| cd / |
| rm -fr $send_files_dir |
| rm -f $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| |
| # real QA test starts here |
| _supported_fs btrfs |
| _require_test |
| _require_scratch |
| _require_fssum |
| |
| send_files_dir=$TEST_DIR/btrfs-test-$seq |
| |
| rm -f $seqres.full |
| rm -fr $send_files_dir |
| mkdir $send_files_dir |
| |
| _scratch_mkfs >>$seqres.full 2>&1 |
| _scratch_mount |
| |
| mkdir $SCRATCH_MNT/dir257 |
| mkdir $SCRATCH_MNT/dir258 |
| mkdir $SCRATCH_MNT/dir259 |
| mv $SCRATCH_MNT/dir257 $SCRATCH_MNT/dir258/dir257 |
| |
| # Filesystem looks like: |
| # |
| # . (ino 256, gen 3) |
| # |--- dir258/ (ino 258, gen 7) |
| # | |--- dir257/ (ino 257, gen 7) |
| # | |
| # |--- dir259/ (ino 259, gen 7) |
| # |
| $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \ |
| $SCRATCH_MNT/mysnap1 > /dev/null |
| |
| mv $SCRATCH_MNT/dir258/dir257 $SCRATCH_MNT/dir257 |
| rmdir $SCRATCH_MNT/dir258 |
| rmdir $SCRATCH_MNT/dir259 |
| # Remount the filesystem so that the next created inodes will have the numbers |
| # 258 and 259. This is because when a filesystem is mounted, btrfs sets the |
| # subvolume's inode counter to a value corresponding to the highest inode number |
| # in the subvolume plus 1. This inode counter is used to assign a unique number |
| # to each new inode and it's incremented by 1 after very inode creation. |
| # Note: we unmount and then mount instead of doing a mount with "-o remount" |
| # because otherwise the inode counter remains at value 260. |
| _scratch_cycle_mount |
| touch $SCRATCH_MNT/file258 |
| mkdir $SCRATCH_MNT/new_dir259 |
| mv $SCRATCH_MNT/dir257 $SCRATCH_MNT/new_dir259/dir257 |
| |
| # Filesystem now looks like: |
| # |
| # . (ino 256, gen 3) |
| # |--- file258 (ino 258, gen 10) |
| # | |
| # |--- new_dir259/ (ino 259, gen 10) |
| # |--- dir257/ (ino 257, gen 7) |
| # |
| $BTRFS_UTIL_PROG subvolume snapshot -r $SCRATCH_MNT \ |
| $SCRATCH_MNT/mysnap2 > /dev/null |
| |
| $FSSUM_PROG -A -f -w $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1 |
| $FSSUM_PROG -A -f -w $send_files_dir/2.fssum \ |
| -x $SCRATCH_MNT/mysnap2/mysnap1 $SCRATCH_MNT/mysnap2 |
| |
| $BTRFS_UTIL_PROG send -f $send_files_dir/1.snap \ |
| $SCRATCH_MNT/mysnap1 2>&1 1>/dev/null | _filter_scratch |
| $BTRFS_UTIL_PROG send -p $SCRATCH_MNT/mysnap1 -f $send_files_dir/2.snap \ |
| $SCRATCH_MNT/mysnap2 2>&1 1>/dev/null | _filter_scratch |
| |
| # Now recreate the filesystem by receiving both send streams and verify we get |
| # the same content that the original filesystem had. |
| _scratch_unmount |
| _scratch_mkfs >>$seqres.full 2>&1 |
| _scratch_mount |
| |
| $BTRFS_UTIL_PROG receive -f $send_files_dir/1.snap $SCRATCH_MNT > /dev/null |
| $FSSUM_PROG -r $send_files_dir/1.fssum $SCRATCH_MNT/mysnap1 |
| $BTRFS_UTIL_PROG receive -f $send_files_dir/2.snap $SCRATCH_MNT > /dev/null |
| $FSSUM_PROG -r $send_files_dir/2.fssum $SCRATCH_MNT/mysnap2 |
| |
| status=0 |
| exit |