| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2016 Red Hat, Inc. All Rights Reserved. |
| # |
| # FS QA Test 270 |
| # |
| # Today ro-compat features can't be mounted rw, but a bug allows |
| # an ro->rw remount transition. This bug has been fixed on linux |
| # kernel (d0a58e8 xfs: disallow rw remount on fs with unknown |
| # ro-compat features), and this case is the regression testcase. |
| # |
| 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 |
| |
| # remove previous $seqres.full before test |
| rm -f $seqres.full |
| |
| # real QA test starts here |
| _supported_fs xfs |
| # skip fs check because superblock contains unknown ro-compat features |
| _require_scratch_nocheck |
| # Only V5 XFS disallow rw mount/remount with unknown ro-compat features |
| _require_scratch_xfs_crc |
| |
| _scratch_mkfs_xfs >>$seqres.full 2>&1 |
| |
| # set the highest bit of features_ro_compat, use it as an unknown |
| # feature bit. If one day this bit become known feature, please |
| # change this case. |
| _scratch_xfs_set_metadata_field "features_ro_compat" "$((2**31))" "sb 0" | \ |
| grep 'features_ro_compat' |
| |
| # rw mount with unknown ro-compat feature should fail |
| echo "rw mount test" |
| _try_scratch_mount 2>>$seqres.full |
| if [ $? -eq 0 ]; then |
| _fail "rw mount test failed" |
| fi |
| |
| # But ro mount should succeed |
| echo "ro mount test" |
| _try_scratch_mount -o ro |
| if [ $? -ne 0 ]; then |
| _fail "ro mount test failed" |
| else |
| # no hang/panic is fine |
| $FSSTRESS_PROG -d $SCRATCH_MNT -p 4 -n 400 >>$seqres.full 2>&1 |
| fi |
| |
| # remount as rw, kernel should reject it |
| echo "rw remount test" |
| _scratch_remount rw 2>>$seqres.full |
| if [ $? -eq 0 ]; then |
| dmesg | tail -n 15 >> $seqres.full |
| _fail "rw remount test failed" |
| fi |
| |
| _scratch_unmount |
| |
| # success, all done |
| status=0 |
| exit |