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|
#! /bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (c) 2014 Filipe Manana. All Rights Reserved.
#
# FS QA Test No. btrfs/039
#
# Regression test for a btrfs incremental send issue related to renaming of
# directories. If at the time of the initial send we have a directory that is
# a child of a directory with a higher inode number, and then later after the
# initial full send we rename both the child and parent directories, but
# without moving any of them, a subsequent incremental send would produce a
# rename instruction for the child directory that pointed to an invalid path.
# This made the btrfs receive operation fail.
#
# This issue is fixed by the following linux kernel btrfs patch:
#
# Btrfs: incremental send, fix invalid path after dir rename
#
. ./common/preamble
_begin_fstest auto quick send
tmp=`mktemp -d`
# Override the default cleanup function.
_cleanup()
{
rm -fr $tmp
}
. ./common/filter
_supported_fs btrfs
_require_scratch
_require_fssum
_scratch_mkfs >/dev/null 2>&1
_scratch_mount
mkdir -p $SCRATCH_MNT/a/b
mkdir $SCRATCH_MNT/d
mkdir $SCRATCH_MNT/a/b/c
mv $SCRATCH_MNT/d $SCRATCH_MNT/a/b/c
mkdir $SCRATCH_MNT/e
mkdir -p $SCRATCH_MNT/a/b/f/g
mv $SCRATCH_MNT/e $SCRATCH_MNT/a/b/f/g
# Filesystem looks like:
#
# . (ino 256)
# |-- a (ino 257)
# |-- b (ino 258)
# |-- c (ino 260)
# | |-- d (ino 259)
# |
# |-- f (ino 262)
# |-- g (ino 263)
# |-- e (ino 261)
_btrfs subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1
mv $SCRATCH_MNT/a/b/c $SCRATCH_MNT/a/b/x
mv $SCRATCH_MNT/a/b/x/d $SCRATCH_MNT/a/b/x/y
mv $SCRATCH_MNT/a/b/f $SCRATCH_MNT/a/b/w
mv $SCRATCH_MNT/a/b/w/g/e $SCRATCH_MNT/a/b/w/g/z
# Filesystem now looks like:
#
# . (ino 256)
# |-- a (ino 257)
# |-- b (ino 258)
# |-- x (ino 260)
# | |-- y (ino 259)
# |
# |-- w (ino 262)
# |-- g (ino 263)
# |-- z (ino 261)
_btrfs subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2
run_check $FSSUM_PROG -A -f -w $tmp/1.fssum $SCRATCH_MNT/mysnap1
run_check $FSSUM_PROG -A -f -w $tmp/2.fssum -x $SCRATCH_MNT/mysnap2/mysnap1 \
$SCRATCH_MNT/mysnap2
_btrfs send -f $tmp/1.snap $SCRATCH_MNT/mysnap1
_btrfs send -p $SCRATCH_MNT/mysnap1 -f $tmp/2.snap \
$SCRATCH_MNT/mysnap2
_scratch_unmount
_check_btrfs_filesystem $SCRATCH_DEV
_scratch_mkfs >/dev/null 2>&1
_scratch_mount
_btrfs receive -f $tmp/1.snap $SCRATCH_MNT
run_check $FSSUM_PROG -r $tmp/1.fssum $SCRATCH_MNT/mysnap1 2>> $seqres.full
_btrfs receive -f $tmp/2.snap $SCRATCH_MNT
run_check $FSSUM_PROG -r $tmp/2.fssum $SCRATCH_MNT/mysnap2 2>> $seqres.full
_scratch_unmount
_check_btrfs_filesystem $SCRATCH_DEV
status=0
exit
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