Re: [PATCH 1/3] xfs: support realtime/log device setup changes in config sections

[Eryu Guan <eguan@redhat.com>]

On Thu, Jan 21, 2016 at 12:43:11PM +1100, Dave Chinner wrote:
> From: Dave Chinner <dchinner@redhat.com>
> 
> Currently changing the devices used by "USE_EXTERNAL" environmental
> variable is not supported by the config section parsing. Add the
> functionality so that we can use config sections to test external
> device configs successfully.
> 
> This required tracking down a bug in _check_xfs_filesystem() which
> was causing a log device to be passed to a test device without an
> external log device. This was caused by an uninitialised variable in
> the function. I also added full output file removals to the first
> couple of generic tests that were failing, because that's where the
> check failure output ends up in this case.
> 
> Signed-off-by: Dave Chinner <dchinner@redhat.com>

Looks good to me. And I ran some tests on NFS/CIFS/XFS/overlay and the
new _check_device function worked as expected. Just one white space
issue below

> ---
>  common/config     | 63 +++++++++++++++++++++++++++++++++++++++----------------
>  common/dmflakey   |  3 ++-
>  common/rc         |  1 +
>  tests/generic/002 |  2 ++
>  tests/generic/004 |  2 ++
>  5 files changed, 52 insertions(+), 19 deletions(-)
> 
> diff --git a/common/config b/common/config
> index cb34fd7..477753e 100644
> --- a/common/config
> +++ b/common/config
> @@ -416,6 +416,30 @@ if [ -f "$HOST_OPTIONS" ]; then
>  	fi
>  fi
>  
> +_check_device()
> +{
> +	local name=$1
> +	local dev_needed=$2
> +	local dev=$3
> +
> +	if [ -z "$dev" ]; then
> +		if [ "$dev_needed" == "required" ]; then 

Above line introduced trailing white space.

Thanks,
Eryu

> +			_fatal "common/config: $name is required but not defined!"
> +		fi
> +		return
> +	fi
> +
> +	echo $dev | grep -qE ":|//" > /dev/null 2>&1
> +	network_dev=$?
> +	if [ "$FSTYP" == "overlay" ]; then
> +		if [ ! -d "$dev" ]; then
> +			_fatal "common/config: $name ($dev) is not a directory for overlay"
> +		fi
> +	elif [ ! -b "$dev" -a "$network_dev" != "0" ]; then
> +		_fatal "common/config: $name ($dev) is not a block device or a network filesystem"
> +	fi
> +}
> +
>  # Parse config section options. This function will parse all the configuration
>  # within a single section which name is passed as an argument. For section
>  # name format see comments in get_config_sections().
> @@ -449,10 +473,13 @@ get_next_config() {
>  	local OLD_TEST_FS_MOUNT_OPTS=$TEST_FS_MOUNT_OPTS
>  	local OLD_MKFS_OPTIONS=$MKFS_OPTIONS
>  	local OLD_FSCK_OPTIONS=$FSCK_OPTIONS
> +	local OLD_USE_EXTERNAL=$USE_EXTERNAL
>  
>  	unset MOUNT_OPTIONS
>  	unset MKFS_OPTIONS
>  	unset FSCK_OPTIONS
> +	unset USE_EXTERNAL
> +
>  	# We might have deduced SCRATCH_DEV from the SCRATCH_DEV_POOL in the previous
>  	# run, so we have to unset it now.
>  	if [ "$SCRATCH_DEV_NOT_SET" == "true" ]; then
> @@ -466,11 +493,20 @@ get_next_config() {
>  		[ -z "$TEST_FS_MOUNT_OPTS" ] && _test_mount_opts
>  		[ -z "$MKFS_OPTIONS" ] && _mkfs_opts
>  		[ -z "$FSCK_OPTIONS" ] && _fsck_opts
> +
> +		# clear the external devices if we are not using them
> +		if [ -z "$USE_EXTERNAL" ]; then
> +			unset TEST_RTDEV
> +			unset TEST_LOGDEV
> +			unset SCRATCH_RTDEV
> +			unset SCRATCH_LOGDEV
> +		fi
>  	else
>  		[ -z "$MOUNT_OPTIONS" ] && export MOUNT_OPTIONS=$OLD_MOUNT_OPTIONS
>  		[ -z "$TEST_FS_MOUNT_OPTS" ] && export TEST_FS_MOUNT_OPTS=$OLD_TEST_FS_MOUNT_OPTS
>  		[ -z "$MKFS_OPTIONS" ] && export MKFS_OPTIONS=$OLD_MKFS_OPTIONS
>  		[ -z "$FSCK_OPTIONS" ] && export FSCK_OPTIONS=$OLD_FSCK_OPTIONS
> +		[ -z "$USE_EXTERNAL" ] && export USE_EXTERNAL=$OLD_USE_EXTERNAL
>  	fi
>  
>  	# set default RESULT_BASE
> @@ -491,15 +527,7 @@ get_next_config() {
>  		exit 1
>  	fi
>  
> -	echo $TEST_DEV | grep -qE ":|//" > /dev/null 2>&1
> -	if [ ! -b "$TEST_DEV" -a "$?" != "0" -a "$FSTYP" != "overlay" ]; then
> -		echo "common/config: Error: \$TEST_DEV ($TEST_DEV) is not a block device or a network filesystem"
> -		exit 1
> -	elif [ "$FSTYP" == "overlay" -a ! -d "$TEST_DEV" ]; then
> -		echo "common/config: Error: \$TEST_DEV ($TEST_DEV) is not a directory for overlay"
> -		exit 1
> -	fi
> -
> +	_check_device TEST_DEV required $TEST_DEV
>  	if [ ! -d "$TEST_DIR" ]; then
>  		echo "common/config: Error: \$TEST_DIR ($TEST_DIR) is not a directory"
>  		exit 1
> @@ -517,19 +545,18 @@ get_next_config() {
>  		export SCRATCH_DEV_NOT_SET=true
>  	fi
>  
> -	echo $SCRATCH_DEV | grep -qE ":|//" > /dev/null 2>&1
> -	if [ ! -z "$SCRATCH_DEV" -a ! -b "$SCRATCH_DEV" -a "$?" != "0" -a "$FSTYP" != "overlay" ]; then
> -		echo "common/config: Error: \$SCRATCH_DEV ($SCRATCH_DEV) is not a block device or a network filesystem"
> -		exit 1
> -	elif [ ! -z "$SCRATCH_DEV" -a "$FSTYP" == "overlay" -a ! -d "$SCRATCH_DEV" ]; then
> -		echo "common/config: Error: \$SCRATCH_DEV ($SCRATCH_DEV) is not a directory for overlay"
> -		exit 1
> -	fi
> -
> +	_check_device SCRATCH_DEV optional $SCRATCH_DEV
>  	if [ ! -z "$SCRATCH_MNT" -a ! -d "$SCRATCH_MNT" ]; then
>  		echo "common/config: Error: \$SCRATCH_MNT ($SCRATCH_MNT) is not a directory"
>  		exit 1
>  	fi
> +
> +	if [ -n "$USE_EXTERNAL" ]; then
> +		_check_device TEST_RTDEV optional $TEST_RTDEV
> +		_check_device TEST_LOGDEV optional $TEST_LOGDEV
> +		_check_device SCRATCH_RTDEV optional $SCRATCH_RTDEV
> +		_check_device SCRATCH_LOGDEV optional $SCRATCH_LOGDEV
> +	fi
>  }
>  
>  if [ -z "$CONFIG_INCLUDED" ]; then
> diff --git a/common/dmflakey b/common/dmflakey
> index 5a45d14..3b6521a 100644
> --- a/common/dmflakey
> +++ b/common/dmflakey
> @@ -39,7 +39,8 @@ _init_flakey()
>  
>  _mount_flakey()
>  {
> -	mount -t $FSTYP $MOUNT_OPTIONS $FLAKEY_DEV $SCRATCH_MNT
> +	_scratch_options mount
> +	mount -t $FSTYP $SCRATCH_OPTIONS $MOUNT_OPTIONS $FLAKEY_DEV $SCRATCH_MNT
>  }
>  
>  _unmount_flakey()
> diff --git a/common/rc b/common/rc
> index 5135260..716c215 100644
> --- a/common/rc
> +++ b/common/rc
> @@ -2017,6 +2017,7 @@ _check_xfs_filesystem()
>      fi
>  
>      extra_mount_options=""
> +    extra_log_options=""
>      extra_options=""
>      device=$1
>      if [ -f $device ];then
> diff --git a/tests/generic/002 b/tests/generic/002
> index f63b208..0433882 100755
> --- a/tests/generic/002
> +++ b/tests/generic/002
> @@ -45,6 +45,8 @@ _supported_fs generic
>  _supported_os IRIX Linux
>  _require_test
>  
> +rm -f $seqres.full
> +
>  echo "Silence is goodness ..."
>  
>  # ensure target directory exists
> diff --git a/tests/generic/004 b/tests/generic/004
> index c7aa473..d0926f1 100755
> --- a/tests/generic/004
> +++ b/tests/generic/004
> @@ -47,6 +47,8 @@ _supported_os Linux
>  _require_test
>  _require_xfs_io_command "flink"
>  
> +rm -f $seqres.full
> +
>  testfile="${TEST_DIR}/tst-tmpfile-flink"
>  
>  # test creating a r/w tmpfile, do I/O and link it into the namespace
> -- 
> 2.5.0
> 
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