#! /bin/bash
# FS QA Test No. 291
#
# Test xfs_repair on fragmented multi-block dir2 fs
#
#-----------------------------------------------------------------------
# Copyright (c) Red Hat, Inc.  All Rights Reserved.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it would be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write the Free Software Foundation,
# Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#-----------------------------------------------------------------------
#

seq=`basename $0`
seqres=$RESULT_DIR/$seq
echo "QA output created by $seq"

here=`pwd`
tmp=/tmp/$$
status=1	# failure is the default!
trap "_cleanup; exit \$status" 0 1 2 3 15

_cleanup()
{
    cd /
    rm -f $tmp.*
}

# get standard environment, filters and checks
. ./common/rc
. ./common/filter

_supported_fs xfs
_supported_os IRIX Linux

# real QA test starts here
rm -f $seqres.full
_require_scratch
_scratch_mkfs_xfs -n size=16k -l size=10m -d size=133m >> $seqres.full 2>&1
_scratch_mount

# First we cause very badly fragmented freespace, then
# make some multiblock directories in the filesystem, which
# should come out very fragmented as a result

# Step 1: Cause badly fragmented free space
# 
# XXX: this needs to be factored to match what generic/204 does to support
# different inode sizes without ENOSPC
mkdir $SCRATCH_MNT/fragdir
for I in `seq 0 26200`; do
        (echo data > $SCRATCH_MNT/fragdir/f$I) >> $seqres.full 2>&1
done
sync

for I in `seq 0 2 26200`; do
        rm -f $SCRATCH_MNT/fragdir/f$I >> $seqres.full 2>&1
done
sync

# Soak up any remaining freespace
xfs_io -f -c "pwrite 0 16m" -c "fsync" $SCRATCH_MNT/space_file.large >> $seqres.full 2>&1

# Take a look at freespace for any post-mortem on the test
_scratch_unmount
xfs_db -r -c freesp $SCRATCH_DEV >> $seqres.full 2>&1
_scratch_mount

# Step 2: Make a bunch of (hopefully fragmented) multiblock
# dir2 directories

# - FMT_LOCAL
mkdir $SCRATCH_MNT/S_IFDIR.FMT_LOCAL
touch $SCRATCH_MNT/S_IFDIR.FMT_LOCAL/localdirfile

# - FMT_EXTENTS
mkdir $SCRATCH_MNT/S_IFDIR.FMT_EXTENTS
for I in `seq 1 100`; do
	touch $SCRATCH_MNT/S_IFDIR.FMT_EXTENTS/extent_dir_file_$I
done
# With a few missing
for I in `seq 10 2 20` 100; do
	rm -f $SCRATCH_MNT/S_IFDIR.FMT_EXTENTS/extent_dir_file_$I
done

# - FMT_BTREE
mkdir $SCRATCH_MNT/S_IFDIR.FMT_BTREE
for I in `seq 1 1000`; do
	touch $SCRATCH_MNT/S_IFDIR.FMT_BTREE/btree_dir_file_$I
done
# With a few missing
for I in `seq 10 2 20` 1000; do
	rm -f $SCRATCH_MNT/S_IFDIR.FMT_BTREE/btree_dir_file_$I
done

# Dave's special hack - grow freespace tree
mkdir $SCRATCH_MNT/S_IFDIR.FMT_BTREE2
for I in `seq 1 5000`; do
	touch $SCRATCH_MNT/S_IFDIR.FMT_BTREE2/btree2_dir_file_$I
done
# Remove every other (odds)
for I in `seq 1 2 5000`; do
	rm -f $SCRATCH_MNT/S_IFDIR.FMT_BTREE2/btree2_dir_file_$I
done

_scratch_unmount
# Can xfs_repair and xfs_check cope with this monster?
_scratch_xfs_repair >> $seqres.full 2>&1 || _fail "xfs_repair failed"
_xfs_check $SCRATCH_DEV >> $seqres.full 2>&1 || _fail "xfs_check failed"

# Yes they can!  Now...
# Can xfs_metadump cope with this monster?
_scratch_metadump $tmp.metadump || _fail "xfs_metadump failed"
xfs_mdrestore $tmp.metadump $tmp.img || _fail "xfs_mdrestore failed"
xfs_repair -f $tmp.img >> $seqres.full 2>&1 || _fail "xfs_repair of metadump failed"

# Yes it can; success, all done
status=0
exit

