Re: [PATCH 2/8] common/xfs: refactor commands to select a particular xfs backing device

[Eryu Guan <guan@eryu.me>]

On Tue, May 11, 2021 at 07:01:51PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <djwong@kernel.org>
> 
> Refactor all the places where we try to force new file data allocations
> to a specific xfs backing device so that we don't end up open-coding the
> same xfs_io command lines over and over.
> 
> Signed-off-by: Darrick J. Wong <djwong@kernel.org>
> ---
>  common/populate   |    2 +-
>  common/xfs        |   25 +++++++++++++++++++++++++
>  tests/generic/223 |    3 ++-
>  tests/generic/449 |    2 +-
>  tests/xfs/004     |    2 +-

>  tests/xfs/088     |    1 +
>  tests/xfs/089     |    1 +
>  tests/xfs/091     |    1 +
>  tests/xfs/120     |    1 +
>  tests/xfs/130     |    1 +

I think above updates should be in a separate patch.

Thanks,
Eryu

>  tests/xfs/146     |    2 +-
>  tests/xfs/147     |    2 +-
>  tests/xfs/235     |    1 +
>  tests/xfs/272     |    2 +-
>  tests/xfs/318     |    2 +-
>  tests/xfs/431     |    4 ++--
>  tests/xfs/521     |    2 +-
>  tests/xfs/528     |    2 +-
>  tests/xfs/532     |    2 +-
>  tests/xfs/533     |    2 +-
>  tests/xfs/538     |    2 +-
>  21 files changed, 47 insertions(+), 15 deletions(-)
> 
> 
> diff --git a/common/populate b/common/populate
> index d484866a..e1704b10 100644
> --- a/common/populate
> +++ b/common/populate
> @@ -162,7 +162,7 @@ _scratch_xfs_populate() {
>  	# Clear the rtinherit flag on the root directory so that files are
>  	# always created on the data volume regardless of MKFS_OPTIONS.  We can
>  	# set the realtime flag when needed.
> -	$XFS_IO_PROG -c 'chattr -t' $SCRATCH_MNT
> +	_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  	blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
>  	dblksz="$($XFS_INFO_PROG "${SCRATCH_MNT}" | grep naming.*bsize | sed -e 's/^.*bsize=//g' -e 's/\([0-9]*\).*$/\1/g')"
> diff --git a/common/xfs b/common/xfs
> index 5cd7b35c..49bd6c31 100644
> --- a/common/xfs
> +++ b/common/xfs
> @@ -194,6 +194,31 @@ _xfs_get_file_block_size()
>  	$XFS_INFO_PROG "$path" | grep realtime | sed -e 's/^.*extsz=\([0-9]*\).*$/\1/g'
>  }
>  
> +# Set or clear the realtime status of every supplied path.  The first argument
> +# is either 'data' or 'realtime'.  All other arguments should be paths to
> +# existing directories or empty regular files.
> +#
> +# For each directory, each file subsequently created will target the given
> +# device for file data allocations.  For each empty regular file, each
> +# subsequent file data allocation will be on the given device.
> +_scratch_xfs_force_bdev()
> +{
> +	local device="$1"
> +	shift
> +	local chattr_arg=""
> +
> +	case "$device" in
> +	"data")		chattr_arg="-t";;
> +	"realtime")	chattr_arg="+t";;
> +	*)
> +		echo "${device}: Don't know what device this is?"
> +		return 1
> +		;;
> +	esac
> +
> +	$XFS_IO_PROG -c "chattr $chattr_arg" "$@"
> +}
> +
>  _xfs_get_fsxattr()
>  {
>  	local field="$1"
> diff --git a/tests/generic/223 b/tests/generic/223
> index f6393293..0df84c2b 100755
> --- a/tests/generic/223
> +++ b/tests/generic/223
> @@ -46,7 +46,8 @@ for SUNIT_K in 8 16 32 64 128; do
>  	# This test checks for stripe alignments of space allocations on the
>  	# filesystem.  Make sure all files get created on the main device,
>  	# which for XFS means no rt files.
> -	test "$FSTYP" = "xfs" && $XFS_IO_PROG -c 'chattr -t' $SCRATCH_MNT
> +	test "$FSTYP" = "xfs" && \
> +		_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  	for SIZE_MULT in 1 2 8 64 256; do
>  		let SIZE=$SIZE_MULT*$SUNIT_BYTES
> diff --git a/tests/generic/449 b/tests/generic/449
> index 5fd15367..9035b705 100755
> --- a/tests/generic/449
> +++ b/tests/generic/449
> @@ -46,7 +46,7 @@ _scratch_mount || _fail "mount failed"
>  # This is a test of xattr behavior when we run out of disk space for xattrs,
>  # so make sure the pwrite goes to the data device and not the rt volume.
>  test "$FSTYP" = "xfs" && \
> -	$XFS_IO_PROG -c 'chattr -t' $SCRATCH_MNT
> +	_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  TFILE=$SCRATCH_MNT/testfile.$seq
>  
> diff --git a/tests/xfs/004 b/tests/xfs/004
> index 7633071c..b3a00fb6 100755
> --- a/tests/xfs/004
> +++ b/tests/xfs/004
> @@ -31,7 +31,7 @@ _populate_scratch()
>  	# This test looks at specific behaviors of the xfs_db freesp command,
>  	# which reports on the contents of the free space btrees for the data
>  	# device.  Don't let anything get created on the realtime volume.
> -	$XFS_IO_PROG -c 'chattr -t' $SCRATCH_MNT
> +	_scratch_xfs_force_bdev data $SCRATCH_MNT
>  	dd if=/dev/zero of=$SCRATCH_MNT/foo count=200 bs=4096 >/dev/null 2>&1 &
>  	dd if=/dev/zero of=$SCRATCH_MNT/goo count=400 bs=4096 >/dev/null 2>&1 &
>  	dd if=/dev/zero of=$SCRATCH_MNT/moo count=800 bs=4096 >/dev/null 2>&1 &
> diff --git a/tests/xfs/088 b/tests/xfs/088
> index fe621d0a..62360ca8 100755
> --- a/tests/xfs/088
> +++ b/tests/xfs/088
> @@ -48,6 +48,7 @@ _scratch_mkfs_xfs > /dev/null
>  echo "+ mount fs image"
>  _scratch_mount
>  blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
> +_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  echo "+ make some files"
>  mkdir -p "${TESTDIR}"
> diff --git a/tests/xfs/089 b/tests/xfs/089
> index 3339ff63..79167a57 100755
> --- a/tests/xfs/089
> +++ b/tests/xfs/089
> @@ -48,6 +48,7 @@ _scratch_mkfs_xfs > /dev/null
>  echo "+ mount fs image"
>  _scratch_mount
>  blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
> +_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  echo "+ make some files"
>  mkdir -p "${TESTDIR}"
> diff --git a/tests/xfs/091 b/tests/xfs/091
> index 9304849d..db6bb0b2 100755
> --- a/tests/xfs/091
> +++ b/tests/xfs/091
> @@ -48,6 +48,7 @@ _scratch_mkfs_xfs > /dev/null
>  echo "+ mount fs image"
>  _scratch_mount
>  blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
> +_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  echo "+ make some files"
>  mkdir -p "${TESTDIR}"
> diff --git a/tests/xfs/120 b/tests/xfs/120
> index 59ac0433..9fcce9ee 100755
> --- a/tests/xfs/120
> +++ b/tests/xfs/120
> @@ -47,6 +47,7 @@ echo "+ mount fs image"
>  _scratch_mount
>  blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
>  nr="$((blksz * 2 / 16))"
> +_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  echo "+ make some files"
>  $XFS_IO_PROG -f -c "pwrite -S 0x62 0 $((blksz * nr))" -c 'fsync' "${SCRATCH_MNT}/bigfile" >> $seqres.full
> diff --git a/tests/xfs/130 b/tests/xfs/130
> index 9fec009f..b4404c5d 100755
> --- a/tests/xfs/130
> +++ b/tests/xfs/130
> @@ -43,6 +43,7 @@ echo "+ mount fs image"
>  _scratch_mount
>  blksz="$(stat -f -c '%s' "${SCRATCH_MNT}")"
>  agcount="$(_xfs_mount_agcount $SCRATCH_MNT)"
> +_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  echo "+ make some files"
>  _pwrite_byte 0x62 0 $((blksz * 64)) "${SCRATCH_MNT}/file0" >> "$seqres.full"
> diff --git a/tests/xfs/146 b/tests/xfs/146
> index 8f85024d..a62b8429 100755
> --- a/tests/xfs/146
> +++ b/tests/xfs/146
> @@ -78,7 +78,7 @@ _scratch_mkfs -r size=$rtsize >> $seqres.full
>  _scratch_mount >> $seqres.full
>  
>  # Make sure the root directory has rtinherit set so our test file will too
> -$XFS_IO_PROG -c 'chattr +t' $SCRATCH_MNT
> +_scratch_xfs_force_bdev realtime $SCRATCH_MNT
>  
>  # Allocate some stuff at the start, to force the first falloc of the ouch file
>  # to happen somewhere in the middle of the rt volume
> diff --git a/tests/xfs/147 b/tests/xfs/147
> index da962f96..0071f5c3 100755
> --- a/tests/xfs/147
> +++ b/tests/xfs/147
> @@ -50,7 +50,7 @@ rextblks=$((rextsize / blksz))
>  echo "blksz $blksz rextsize $rextsize rextblks $rextblks" >> $seqres.full
>  
>  # Make sure the root directory has rtinherit set so our test file will too
> -$XFS_IO_PROG -c 'chattr +t' $SCRATCH_MNT
> +_scratch_xfs_force_bdev realtime $SCRATCH_MNT
>  
>  sz=$((rextsize * 100))
>  range="$((blksz * 3)) $blksz"
> diff --git a/tests/xfs/235 b/tests/xfs/235
> index 1ed19424..553a3bc8 100755
> --- a/tests/xfs/235
> +++ b/tests/xfs/235
> @@ -41,6 +41,7 @@ echo "+ mount fs image"
>  _scratch_mount
>  blksz=$(stat -f -c '%s' ${SCRATCH_MNT})
>  agcount=$(_xfs_mount_agcount $SCRATCH_MNT)
> +_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  echo "+ make some files"
>  _pwrite_byte 0x62 0 $((blksz * 64)) ${SCRATCH_MNT}/file0 >> $seqres.full
> diff --git a/tests/xfs/272 b/tests/xfs/272
> index 6c0fede5..2848848d 100755
> --- a/tests/xfs/272
> +++ b/tests/xfs/272
> @@ -38,7 +38,7 @@ _scratch_mkfs > "$seqres.full" 2>&1
>  _scratch_mount
>  
>  # Make sure everything is on the data device
> -$XFS_IO_PROG -c 'chattr -t' $SCRATCH_MNT
> +_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  _pwrite_byte 0x80 0 737373 $SCRATCH_MNT/urk >> $seqres.full
>  sync
> diff --git a/tests/xfs/318 b/tests/xfs/318
> index 07375b1f..823f3e6c 100755
> --- a/tests/xfs/318
> +++ b/tests/xfs/318
> @@ -44,7 +44,7 @@ _scratch_mount >> $seqres.full
>  
>  # This test depends on specific behaviors of the data device, so create all
>  # files on it.
> -$XFS_IO_PROG -c 'chattr -t' $SCRATCH_MNT
> +_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  echo "Create files"
>  touch $SCRATCH_MNT/file1
> diff --git a/tests/xfs/431 b/tests/xfs/431
> index e67906dc..dd634ed6 100755
> --- a/tests/xfs/431
> +++ b/tests/xfs/431
> @@ -47,7 +47,7 @@ _scratch_mount
>  
>  # Set realtime inherit flag on scratch mount, suppress output
>  # as this may simply error out on future kernels
> -$XFS_IO_PROG -c 'chattr +t' $SCRATCH_MNT &> /dev/null
> +_scratch_xfs_force_bdev realtime $SCRATCH_MNT &> /dev/null
>  
>  # Check if 't' is actually set, as xfs_io returns 0 even when it fails to set
>  # an attribute. And erroring out here is fine, this would be desired behavior
> @@ -60,7 +60,7 @@ if $XFS_IO_PROG -c 'lsattr' $SCRATCH_MNT | grep -q 't'; then
>  	# Remove the testfile and rt inherit flag after we are done or
>  	# xfs_repair will fail.
>  	rm -f $SCRATCH_MNT/testfile
> -	$XFS_IO_PROG -c 'chattr -t' $SCRATCH_MNT | tee -a $seqres.full 2>&1
> +	_scratch_xfs_force_bdev data $SCRATCH_MNT | tee -a $seqres.full 2>&1
>  fi
>  
>  # success, all done
> diff --git a/tests/xfs/521 b/tests/xfs/521
> index b8026d45..64155662 100755
> --- a/tests/xfs/521
> +++ b/tests/xfs/521
> @@ -55,7 +55,7 @@ testdir=$SCRATCH_MNT/test-$seq
>  mkdir $testdir
>  
>  echo "Check rt volume stats"
> -$XFS_IO_PROG -c 'chattr +t' $testdir
> +_scratch_xfs_force_bdev realtime $testdir
>  $XFS_INFO_PROG $SCRATCH_MNT >> $seqres.full
>  before=$(stat -f -c '%b' $testdir)
>  
> diff --git a/tests/xfs/528 b/tests/xfs/528
> index 7f98c5b8..4db4f513 100755
> --- a/tests/xfs/528
> +++ b/tests/xfs/528
> @@ -77,7 +77,7 @@ test_ops() {
>  		_notrun "Could not mount rextsize=$rextsize with synthetic rt volume"
>  
>  	# Force all files to be realtime files
> -	$XFS_IO_PROG -c 'chattr +t' $SCRATCH_MNT
> +	_scratch_xfs_force_bdev realtime $SCRATCH_MNT
>  
>  	log "Test regular write, rextsize=$rextsize"
>  	mk_file $SCRATCH_MNT/write $rextsize
> diff --git a/tests/xfs/532 b/tests/xfs/532
> index 560af586..1749d6ac 100755
> --- a/tests/xfs/532
> +++ b/tests/xfs/532
> @@ -47,7 +47,7 @@ _scratch_mount >> $seqres.full
>  
>  # Disable realtime inherit flag (if any) on root directory so that space on data
>  # device gets fragmented rather than realtime device.
> -$XFS_IO_PROG -c 'chattr -t' $SCRATCH_MNT
> +_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  bsize=$(_get_block_size $SCRATCH_MNT)
>  
> diff --git a/tests/xfs/533 b/tests/xfs/533
> index dd4cb4c4..b73097e1 100755
> --- a/tests/xfs/533
> +++ b/tests/xfs/533
> @@ -58,7 +58,7 @@ _scratch_mount >> $seqres.full
>  
>  # Disable realtime inherit flag (if any) on root directory so that space on data
>  # device gets fragmented rather than realtime device.
> -$XFS_IO_PROG -c 'chattr -t' $SCRATCH_MNT
> +_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  echo "Consume free space"
>  fillerdir=$SCRATCH_MNT/fillerdir
> diff --git a/tests/xfs/538 b/tests/xfs/538
> index 97273b88..deb43d7c 100755
> --- a/tests/xfs/538
> +++ b/tests/xfs/538
> @@ -44,7 +44,7 @@ _scratch_mount >> $seqres.full
>  
>  # Disable realtime inherit flag (if any) on root directory so that space on data
>  # device gets fragmented rather than realtime device.
> -$XFS_IO_PROG -c 'chattr -t' $SCRATCH_MNT
> +_scratch_xfs_force_bdev data $SCRATCH_MNT
>  
>  bsize=$(_get_file_block_size $SCRATCH_MNT)
>  
>