| #! /bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright (c) 2016, Oracle and/or its affiliates. All Rights Reserved. |
| # |
| # FS QA Test No. 179 |
| # |
| # See how well reflink handles overflowing reflink counts. |
| # |
| 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 -rf $tmp.* |
| } |
| |
| # get standard environment, filters and checks |
| . ./common/rc |
| . ./common/filter |
| . ./common/attr |
| . ./common/reflink |
| |
| # real QA test starts here |
| _supported_fs xfs |
| _require_scratch_reflink |
| _require_scratch_nocheck |
| _require_cp_reflink |
| _require_test_program "punch-alternating" |
| |
| rm -f $seqres.full |
| |
| echo "Format and mount" |
| _scratch_mkfs -d agcount=1 > $seqres.full 2>&1 |
| _scratch_mount >> $seqres.full 2>&1 |
| |
| testdir=$SCRATCH_MNT/test-$seq |
| mkdir $testdir |
| |
| blksz=65536 |
| |
| echo "Create original files" |
| _pwrite_byte 0x61 0 $blksz $testdir/file1 >> $seqres.full |
| _cp_reflink $testdir/file1 $testdir/file2 >> $seqres.full |
| |
| echo "Change reference count" |
| _scratch_unmount |
| echo "set refcount to -4" >> $seqres.full |
| _scratch_xfs_db -x -c 'agf 0' -c 'addr refcntroot' -c 'write recs[1].refcount 4294967292' >> $seqres.full |
| echo "check refcount after setting to -4" >> $seqres.full |
| _scratch_xfs_db -c 'agf 0' -c 'addr refcntroot' -c 'p recs[1]' >> $seqres.full |
| _scratch_mount >> $seqres.full |
| |
| echo "Reflink the overlinked file" |
| _cp_reflink $testdir/file1 $testdir/file3 >> $seqres.full |
| _cp_reflink $testdir/file1 $testdir/file4 >> $seqres.full |
| _cp_reflink $testdir/file1 $testdir/file5 >> $seqres.full |
| _cp_reflink $testdir/file1 $testdir/file6 >> $seqres.full |
| _cp_reflink $testdir/file1 $testdir/file7 >> $seqres.full |
| |
| echo "Check scratch fs" |
| _scratch_unmount |
| echo "check refcount after reflinking 5 more times" >> $seqres.full |
| _scratch_xfs_db -c 'agf 0' -c 'addr refcntroot' -c 'p recs[1]' >> $seqres.full |
| _scratch_mount >> $seqres.full |
| |
| echo "CoW a couple files" |
| _pwrite_byte 0x62 0 $blksz $testdir/file3 >> $seqres.full |
| _pwrite_byte 0x62 0 $blksz $testdir/file5 >> $seqres.full |
| _pwrite_byte 0x62 0 $blksz $testdir/file7 >> $seqres.full |
| |
| echo "Check scratch fs" |
| _scratch_unmount |
| echo "check refcount after cowing 3 files" >> $seqres.full |
| _scratch_xfs_db -c 'agf 0' -c 'addr refcntroot' -c 'p recs[1]' >> $seqres.full |
| _scratch_mount >> $seqres.full |
| |
| echo "Remove reflinked files" |
| rm -rf $testdir/file* |
| |
| echo "Check scratch fs" |
| _scratch_unmount |
| echo "check refcount after removing all files" >> $seqres.full |
| _scratch_xfs_db -c 'agf 0' -c 'addr refcntroot' -c 'p recs[1]' >> $seqres.full |
| _scratch_xfs_repair -o force_geometry -n >> $seqres.full 2>&1 |
| res=$? |
| if [ $res -eq 0 ]; then |
| # If repair succeeds then format the device so that the post-test |
| # check doesn't fail due to the single AG. |
| _scratch_mkfs >> $seqres.full 2>&1 |
| else |
| _fail "xfs_repair fails" |
| fi |
| |
| # success, all done |
| status=0 |
| exit |