| Message ID | d1c820e50399a16f968b5e0dd32b21234568b163.1575404627.git.osandov@fb.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [v2] generic: test truncating mixed written/unwritten XFS realtime extent | expand |
On Tue, Dec 03, 2019 at 12:25:01PM -0800, Omar Sandoval wrote: > From: Omar Sandoval <osandov@fb.com> > > The only XFS-specific part of this test is the setup, so we can make the > rest a generic test. It's slow, though, as it needs to write 8GB to > convert a big unwritten extent to written. > > Signed-off-by: Omar Sandoval <osandov@fb.com> > --- > Changes from v1: > > - If rtdev is not configured, fall back to loop device on test > filesystem > - Use XFS_IO_PROG instead of fallocate/sync/dd > - Use truncate instead of rm > - Add comments explaining the steps > > tests/generic/589 | 102 ++++++++++++++++++++++++++++++++++++++++++ > tests/generic/589.out | 2 + > tests/generic/group | 1 + > 3 files changed, 105 insertions(+) > create mode 100755 tests/generic/589 > create mode 100644 tests/generic/589.out > > diff --git a/tests/generic/589 b/tests/generic/589 > new file mode 100755 > index 00000000..3ca1d100 > --- /dev/null > +++ b/tests/generic/589 > @@ -0,0 +1,102 @@ > +#! /bin/bash > +# SPDX-License-Identifier: GPL-2.0 > +# Copyright (c) 2019 Facebook. All Rights Reserved. > +# > +# FS QA Test 589 > +# > +# Test "xfs: fix realtime file data space leak" and "xfs: don't check for AG > +# deadlock for realtime files in bunmapi". On XFS without the fix, truncate > +# will hang forever. On other filesystems, this just tests writing into big > +# fallocates. > +# > +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.* > + if [[ -n $loop ]]; then > + losetup -d "$loop" > /dev/null 2>&1 test -n "$loop" && _destroy_loop_device "$loop" > + fi > + rm -f "$TEST_DIR/$seq" > +} > + > +. ./common/rc > +. ./common/filter > + > +rm -f $seqres.full > + > +_supported_fs generic > +_supported_os Linux > +_require_scratch_nocheck > + > +maxextlen=$((0x1fffff)) > +bs=4096 > +rextsize=4 > +filesz=$(((maxextlen + 1) * bs)) > + > +extra_options="" > +# If we're testing XFS, set up the realtime device to reproduce the bug. > +if [[ $FSTYP = xfs ]]; then > + # If we don't have a realtime device, set up a loop device on the test > + # filesystem. > + if [[ $USE_EXTERNAL != yes || -z $SCRATCH_RTDEV ]]; then > + _require_test > + loopsz="$((filesz + (1 << 26)))" > + _require_fs_space "$TEST_DIR" $((loopsz / 1024)) > + $XFS_IO_PROG -c "truncate $loopsz" -f "$TEST_DIR/$seq" > + loop="$(losetup -f --show "$TEST_DIR/$seq")" loop=$(_create_loop_device $TEST_DIR/$seq) Otherwise, this looks good to me. --D > + USE_EXTERNAL=yes > + SCRATCH_RTDEV="$loop" > + fi > + extra_options="$extra_options -bsize=$bs" > + extra_options="$extra_options -r extsize=$((bs * rextsize))" > + extra_options="$extra_options -d agsize=$(((maxextlen + 1) * bs / 2)),rtinherit=1" > +fi > +_scratch_mkfs $extra_options >>$seqres.full 2>&1 > +_scratch_mount > +_require_fs_space "$SCRATCH_MNT" $((filesz / 1024)) > + > +# Allocate maxextlen + 1 blocks. As long as the allocator does something sane, > +# we should end up with two extents that look something like: > +# > +# u3.bmx[0-1] = [startoff,startblock,blockcount,extentflag] > +# 0:[0,0,2097148,1] > +# 1:[2097148,2097148,4,1] > +# > +# Extent 0 has blockcount = ALIGN_DOWN(maxextlen, rextsize). Extent 1 is > +# adjacent and has blockcount = rextsize. Both are unwritten. > +$XFS_IO_PROG -c "falloc 0 $filesz" -c fsync -f "$SCRATCH_MNT/file" > + > +# Write extent 0 + one block of extent 1. Our extents should end up like so: > +# > +# u3.bmx[0-1] = [startoff,startblock,blockcount,extentflag] > +# 0:[0,0,2097149,0] > +# 1:[2097149,2097149,3,1] > +# > +# Extent 0 is written and has blockcount = ALIGN_DOWN(maxextlen, rextsize) + 1, > +# Extent 1 is adjacent, unwritten, and has blockcount = rextsize - 1 and > +# startblock % rextsize = 1. > +# > +# The -b is just to speed things up (doing GBs of I/O in 4k chunks kind of > +# sucks). > +$XFS_IO_PROG -c "pwrite -b 1M -W 0 $(((maxextlen + 2 - rextsize) * bs))" \ > + "$SCRATCH_MNT/file" >> "$seqres.full" > + > +# Truncate the extents. > +$XFS_IO_PROG -c "truncate 0" -c fsync "$SCRATCH_MNT/file" > + > +# We need to do this before the loop device gets torn down. > +_scratch_unmount > +_check_scratch_fs > + > +echo "Silence is golden" > +status=0 > +exit > diff --git a/tests/generic/589.out b/tests/generic/589.out > new file mode 100644 > index 00000000..5ab6ab10 > --- /dev/null > +++ b/tests/generic/589.out > @@ -0,0 +1,2 @@ > +QA output created by 589 > +Silence is golden > diff --git a/tests/generic/group b/tests/generic/group > index 87d7441c..be6f4a43 100644 > --- a/tests/generic/group > +++ b/tests/generic/group > @@ -591,3 +591,4 @@ > 586 auto quick rw prealloc > 587 auto quick rw prealloc > 588 auto quick log clone > +589 auto prealloc preallocrw dangerous > -- > 2.24.0 >
diff --git a/tests/generic/589 b/tests/generic/589 new file mode 100755 index 00000000..3ca1d100 --- /dev/null +++ b/tests/generic/589 @@ -0,0 +1,102 @@ +#! /bin/bash +# SPDX-License-Identifier: GPL-2.0 +# Copyright (c) 2019 Facebook. All Rights Reserved. +# +# FS QA Test 589 +# +# Test "xfs: fix realtime file data space leak" and "xfs: don't check for AG +# deadlock for realtime files in bunmapi". On XFS without the fix, truncate +# will hang forever. On other filesystems, this just tests writing into big +# fallocates. +# +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.* + if [[ -n $loop ]]; then + losetup -d "$loop" > /dev/null 2>&1 + fi + rm -f "$TEST_DIR/$seq" +} + +. ./common/rc +. ./common/filter + +rm -f $seqres.full + +_supported_fs generic +_supported_os Linux +_require_scratch_nocheck + +maxextlen=$((0x1fffff)) +bs=4096 +rextsize=4 +filesz=$(((maxextlen + 1) * bs)) + +extra_options="" +# If we're testing XFS, set up the realtime device to reproduce the bug. +if [[ $FSTYP = xfs ]]; then + # If we don't have a realtime device, set up a loop device on the test + # filesystem. + if [[ $USE_EXTERNAL != yes || -z $SCRATCH_RTDEV ]]; then + _require_test + loopsz="$((filesz + (1 << 26)))" + _require_fs_space "$TEST_DIR" $((loopsz / 1024)) + $XFS_IO_PROG -c "truncate $loopsz" -f "$TEST_DIR/$seq" + loop="$(losetup -f --show "$TEST_DIR/$seq")" + USE_EXTERNAL=yes + SCRATCH_RTDEV="$loop" + fi + extra_options="$extra_options -bsize=$bs" + extra_options="$extra_options -r extsize=$((bs * rextsize))" + extra_options="$extra_options -d agsize=$(((maxextlen + 1) * bs / 2)),rtinherit=1" +fi +_scratch_mkfs $extra_options >>$seqres.full 2>&1 +_scratch_mount +_require_fs_space "$SCRATCH_MNT" $((filesz / 1024)) + +# Allocate maxextlen + 1 blocks. As long as the allocator does something sane, +# we should end up with two extents that look something like: +# +# u3.bmx[0-1] = [startoff,startblock,blockcount,extentflag] +# 0:[0,0,2097148,1] +# 1:[2097148,2097148,4,1] +# +# Extent 0 has blockcount = ALIGN_DOWN(maxextlen, rextsize). Extent 1 is +# adjacent and has blockcount = rextsize. Both are unwritten. +$XFS_IO_PROG -c "falloc 0 $filesz" -c fsync -f "$SCRATCH_MNT/file" + +# Write extent 0 + one block of extent 1. Our extents should end up like so: +# +# u3.bmx[0-1] = [startoff,startblock,blockcount,extentflag] +# 0:[0,0,2097149,0] +# 1:[2097149,2097149,3,1] +# +# Extent 0 is written and has blockcount = ALIGN_DOWN(maxextlen, rextsize) + 1, +# Extent 1 is adjacent, unwritten, and has blockcount = rextsize - 1 and +# startblock % rextsize = 1. +# +# The -b is just to speed things up (doing GBs of I/O in 4k chunks kind of +# sucks). +$XFS_IO_PROG -c "pwrite -b 1M -W 0 $(((maxextlen + 2 - rextsize) * bs))" \ + "$SCRATCH_MNT/file" >> "$seqres.full" + +# Truncate the extents. +$XFS_IO_PROG -c "truncate 0" -c fsync "$SCRATCH_MNT/file" + +# We need to do this before the loop device gets torn down. +_scratch_unmount +_check_scratch_fs + +echo "Silence is golden" +status=0 +exit diff --git a/tests/generic/589.out b/tests/generic/589.out new file mode 100644 index 00000000..5ab6ab10 --- /dev/null +++ b/tests/generic/589.out @@ -0,0 +1,2 @@ +QA output created by 589 +Silence is golden diff --git a/tests/generic/group b/tests/generic/group index 87d7441c..be6f4a43 100644 --- a/tests/generic/group +++ b/tests/generic/group @@ -591,3 +591,4 @@ 586 auto quick rw prealloc 587 auto quick rw prealloc 588 auto quick log clone +589 auto prealloc preallocrw dangerous