diff mbox

[v3,1/5] fstests: implement require of multiple overlayfs features

Message ID 1517131356-8048-2-git-send-email-amir73il@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Amir Goldstein Jan. 28, 2018, 9:22 a.m. UTC
Some overlayfs features must be checked together, because they cannot
be enabled without a dependent feature (e.g. nfs_export and index).

Signed-off-by: Amir Goldstein <amir73il@gmail.com>
---
 common/overlay | 23 ++++++++++++++++++++---
 common/rc      | 15 +++++++++------
 2 files changed, 29 insertions(+), 9 deletions(-)

Comments

Eryu Guan Jan. 29, 2018, 2:33 p.m. UTC | #1
On Sun, Jan 28, 2018 at 11:22:32AM +0200, Amir Goldstein wrote:
> Some overlayfs features must be checked together, because they cannot
> be enabled without a dependent feature (e.g. nfs_export and index).
> 
> Signed-off-by: Amir Goldstein <amir73il@gmail.com>
> ---
>  common/overlay | 23 ++++++++++++++++++++---
>  common/rc      | 15 +++++++++------
>  2 files changed, 29 insertions(+), 9 deletions(-)
> 
> diff --git a/common/overlay b/common/overlay
> index 1da4ab1..38fe994 100644
> --- a/common/overlay
> +++ b/common/overlay
> @@ -138,9 +138,6 @@ _require_scratch_overlay_feature()
>  	[ "$default" = Y ] || [ "$default" = N ] || \
>  		_notrun "feature '${feature}' not supported by ${FSTYP}"
>  
> -	_scratch_mkfs > /dev/null 2>&1
> -	_scratch_mount -o ${feature}=on || \
> -		_notrun "${FSTYP} feature '${feature}' cannot be enabled on ${SCRATCH_DEV}"

So _require_scratch_overlay_feature can't be used by any test directly
now and should only be called by _require_scratch_overlay_features.

IMHO, the name _require_scratch_overlay_feature becomes misleading after
this change, it implies it can be called by tests directly. I'd rename
it to a more proper name (which I can't think of any..) with double
underscores at the beginning to imply it's kind of "static", e.g. the
internal helpers like "__populate_create_dir" in common/populate.

Another way to go is just open-code this in
_require_scratch_overlay_features().

>  	# Check options to be sure. For example, Overlayfs will fallback to
>  	# index=off if underlying fs does not support file handles.
>  	# Overlayfs only displays mount option if it differs from the default.
> @@ -149,5 +146,25 @@ _require_scratch_overlay_feature()
>  	  ( [ "$default" = Y ] && ! _fs_options $SCRATCH_DEV | grep -q "${feature}=off" )) && \
>  	    touch $SCRATCH_MNT/foo 2>/dev/null ) || \
>  	        _notrun "${FSTYP} feature '${feature}' cannot be enabled on ${SCRATCH_DEV}"
> +}
> +
> +# Require a set of overlayfs features
> +_require_scratch_overlay_features()
> +{
> +	local features=( $* )
> +	local opts="rw"
> +
> +	for feature in ${features[*]}; do
> +		opts+=",${feature}=on"
> +	done
> +
> +	_scratch_mkfs > /dev/null 2>&1
> +	_scratch_mount -o $opts || \
> +		_notrun "overlay options '$opts' cannot be enabled on ${SCRATCH_DEV}"
> +
> +	for feature in ${features[*]}; do
> +		_require_scratch_overlay_feature ${feature}
> +	done
> +
>  	_scratch_unmount
>  }
> diff --git a/common/rc b/common/rc
> index 77a4eb4..3b81061 100644
> --- a/common/rc
> +++ b/common/rc
> @@ -3658,22 +3658,25 @@ _get_fs_sysfs_attr()
>  	cat /sys/fs/${FSTYP}/${dname}/${attr}
>  }
>  
> -# Generic test for specific filesystem feature.
> +# Generic test for specific filesystem features.
>  # Currently only implemented to test overlayfs features.
> -_require_scratch_feature()
> +_require_scratch_features()
>  {
> -	local feature=$1
> -
>  	case "$FSTYP" in
>  	overlay)
> -		_require_scratch_overlay_feature ${feature}
> +		_require_scratch_overlay_features $*
>  		;;
>  	*)
> -		_fail "Test for feature '${feature}' of ${FSTYP} is not implemented"
> +		_fail "Test for features '$*' of ${FSTYP} is not implemented"
>  		;;
>  	esac
>  }
>  
> +_require_scratch_feature()
> +{
> +	_require_scratch_features $1
> +}
> +

Hmm, I don't think this is necessary. Just drop all the plural variants
and teach _require_scratch_overlay_feature to accept & test multiple
features, and add some good comments.

Thanks,
Eryu

>  init_rc
>  
>  ################################################################################
> -- 
> 2.7.4
> 
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Amir Goldstein Jan. 29, 2018, 5:06 p.m. UTC | #2
On Mon, Jan 29, 2018 at 4:33 PM, Eryu Guan <eguan@redhat.com> wrote:
> On Sun, Jan 28, 2018 at 11:22:32AM +0200, Amir Goldstein wrote:
>> Some overlayfs features must be checked together, because they cannot
>> be enabled without a dependent feature (e.g. nfs_export and index).
>>
>> Signed-off-by: Amir Goldstein <amir73il@gmail.com>
>> ---
>>  common/overlay | 23 ++++++++++++++++++++---
>>  common/rc      | 15 +++++++++------
>>  2 files changed, 29 insertions(+), 9 deletions(-)
>>
>> diff --git a/common/overlay b/common/overlay
>> index 1da4ab1..38fe994 100644
>> --- a/common/overlay
>> +++ b/common/overlay
>> @@ -138,9 +138,6 @@ _require_scratch_overlay_feature()
>>       [ "$default" = Y ] || [ "$default" = N ] || \
>>               _notrun "feature '${feature}' not supported by ${FSTYP}"
>>
>> -     _scratch_mkfs > /dev/null 2>&1
>> -     _scratch_mount -o ${feature}=on || \
>> -             _notrun "${FSTYP} feature '${feature}' cannot be enabled on ${SCRATCH_DEV}"
>
> So _require_scratch_overlay_feature can't be used by any test directly
> now and should only be called by _require_scratch_overlay_features.
>
> IMHO, the name _require_scratch_overlay_feature becomes misleading after
> this change, it implies it can be called by tests directly. I'd rename
> it to a more proper name (which I can't think of any..) with double
> underscores at the beginning to imply it's kind of "static", e.g. the
> internal helpers like "__populate_create_dir" in common/populate.

__check_one_scratch_overlay_feature

>
> Another way to go is just open-code this in
> _require_scratch_overlay_features().
>
>>       # Check options to be sure. For example, Overlayfs will fallback to
>>       # index=off if underlying fs does not support file handles.
>>       # Overlayfs only displays mount option if it differs from the default.
>> @@ -149,5 +146,25 @@ _require_scratch_overlay_feature()
>>         ( [ "$default" = Y ] && ! _fs_options $SCRATCH_DEV | grep -q "${feature}=off" )) && \
>>           touch $SCRATCH_MNT/foo 2>/dev/null ) || \
>>               _notrun "${FSTYP} feature '${feature}' cannot be enabled on ${SCRATCH_DEV}"
>> +}
>> +
>> +# Require a set of overlayfs features
>> +_require_scratch_overlay_features()
>> +{
>> +     local features=( $* )
>> +     local opts="rw"
>> +
>> +     for feature in ${features[*]}; do
>> +             opts+=",${feature}=on"
>> +     done
>> +
>> +     _scratch_mkfs > /dev/null 2>&1
>> +     _scratch_mount -o $opts || \
>> +             _notrun "overlay options '$opts' cannot be enabled on ${SCRATCH_DEV}"
>> +
>> +     for feature in ${features[*]}; do
>> +             _require_scratch_overlay_feature ${feature}
>> +     done
>> +
>>       _scratch_unmount
>>  }
>> diff --git a/common/rc b/common/rc
>> index 77a4eb4..3b81061 100644
>> --- a/common/rc
>> +++ b/common/rc
>> @@ -3658,22 +3658,25 @@ _get_fs_sysfs_attr()
>>       cat /sys/fs/${FSTYP}/${dname}/${attr}
>>  }
>>
>> -# Generic test for specific filesystem feature.
>> +# Generic test for specific filesystem features.
>>  # Currently only implemented to test overlayfs features.
>> -_require_scratch_feature()
>> +_require_scratch_features()
>>  {
>> -     local feature=$1
>> -
>>       case "$FSTYP" in
>>       overlay)
>> -             _require_scratch_overlay_feature ${feature}
>> +             _require_scratch_overlay_features $*
>>               ;;
>>       *)
>> -             _fail "Test for feature '${feature}' of ${FSTYP} is not implemented"
>> +             _fail "Test for features '$*' of ${FSTYP} is not implemented"
>>               ;;
>>       esac
>>  }
>>
>> +_require_scratch_feature()
>> +{
>> +     _require_scratch_features $1
>> +}
>> +
>
> Hmm, I don't think this is necessary. Just drop all the plural variants
> and teach _require_scratch_overlay_feature to accept & test multiple
> features, and add some good comments.
>

I see what you are saying, but I rather call a function called
_require_scratch_overlay_features from the tests that require plural features
I can leave _require_scratch_feature for the singular feature case though,
until another filesystem needs the plural variant.

Thanks,
Amir.
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Eryu Guan Jan. 30, 2018, 4:52 a.m. UTC | #3
On Mon, Jan 29, 2018 at 07:06:23PM +0200, Amir Goldstein wrote:
> On Mon, Jan 29, 2018 at 4:33 PM, Eryu Guan <eguan@redhat.com> wrote:
> > On Sun, Jan 28, 2018 at 11:22:32AM +0200, Amir Goldstein wrote:
> >> Some overlayfs features must be checked together, because they cannot
> >> be enabled without a dependent feature (e.g. nfs_export and index).
> >>
> >> Signed-off-by: Amir Goldstein <amir73il@gmail.com>
> >> ---
> >>  common/overlay | 23 ++++++++++++++++++++---
> >>  common/rc      | 15 +++++++++------
> >>  2 files changed, 29 insertions(+), 9 deletions(-)
> >>
> >> diff --git a/common/overlay b/common/overlay
> >> index 1da4ab1..38fe994 100644
> >> --- a/common/overlay
> >> +++ b/common/overlay
> >> @@ -138,9 +138,6 @@ _require_scratch_overlay_feature()
> >>       [ "$default" = Y ] || [ "$default" = N ] || \
> >>               _notrun "feature '${feature}' not supported by ${FSTYP}"
> >>
> >> -     _scratch_mkfs > /dev/null 2>&1
> >> -     _scratch_mount -o ${feature}=on || \
> >> -             _notrun "${FSTYP} feature '${feature}' cannot be enabled on ${SCRATCH_DEV}"
> >
> > So _require_scratch_overlay_feature can't be used by any test directly
> > now and should only be called by _require_scratch_overlay_features.
> >
> > IMHO, the name _require_scratch_overlay_feature becomes misleading after
> > this change, it implies it can be called by tests directly. I'd rename
> > it to a more proper name (which I can't think of any..) with double
> > underscores at the beginning to imply it's kind of "static", e.g. the
> > internal helpers like "__populate_create_dir" in common/populate.
> 
> __check_one_scratch_overlay_feature

"one" seems redundant, given the ending "feature".

> 
> >
> > Another way to go is just open-code this in
> > _require_scratch_overlay_features().
> >
> >>       # Check options to be sure. For example, Overlayfs will fallback to
> >>       # index=off if underlying fs does not support file handles.
> >>       # Overlayfs only displays mount option if it differs from the default.
> >> @@ -149,5 +146,25 @@ _require_scratch_overlay_feature()
> >>         ( [ "$default" = Y ] && ! _fs_options $SCRATCH_DEV | grep -q "${feature}=off" )) && \
> >>           touch $SCRATCH_MNT/foo 2>/dev/null ) || \
> >>               _notrun "${FSTYP} feature '${feature}' cannot be enabled on ${SCRATCH_DEV}"
> >> +}
> >> +
> >> +# Require a set of overlayfs features
> >> +_require_scratch_overlay_features()
> >> +{
> >> +     local features=( $* )
> >> +     local opts="rw"
> >> +
> >> +     for feature in ${features[*]}; do
> >> +             opts+=",${feature}=on"
> >> +     done
> >> +
> >> +     _scratch_mkfs > /dev/null 2>&1
> >> +     _scratch_mount -o $opts || \
> >> +             _notrun "overlay options '$opts' cannot be enabled on ${SCRATCH_DEV}"
> >> +
> >> +     for feature in ${features[*]}; do
> >> +             _require_scratch_overlay_feature ${feature}
> >> +     done
> >> +
> >>       _scratch_unmount
> >>  }
> >> diff --git a/common/rc b/common/rc
> >> index 77a4eb4..3b81061 100644
> >> --- a/common/rc
> >> +++ b/common/rc
> >> @@ -3658,22 +3658,25 @@ _get_fs_sysfs_attr()
> >>       cat /sys/fs/${FSTYP}/${dname}/${attr}
> >>  }
> >>
> >> -# Generic test for specific filesystem feature.
> >> +# Generic test for specific filesystem features.
> >>  # Currently only implemented to test overlayfs features.
> >> -_require_scratch_feature()
> >> +_require_scratch_features()
> >>  {
> >> -     local feature=$1
> >> -
> >>       case "$FSTYP" in
> >>       overlay)
> >> -             _require_scratch_overlay_feature ${feature}
> >> +             _require_scratch_overlay_features $*
> >>               ;;
> >>       *)
> >> -             _fail "Test for feature '${feature}' of ${FSTYP} is not implemented"
> >> +             _fail "Test for features '$*' of ${FSTYP} is not implemented"
> >>               ;;
> >>       esac
> >>  }
> >>
> >> +_require_scratch_feature()
> >> +{
> >> +     _require_scratch_features $1
> >> +}
> >> +
> >
> > Hmm, I don't think this is necessary. Just drop all the plural variants
> > and teach _require_scratch_overlay_feature to accept & test multiple
> > features, and add some good comments.
> >
> 
> I see what you are saying, but I rather call a function called
> _require_scratch_overlay_features from the tests that require plural features
> I can leave _require_scratch_feature for the singular feature case though,
> until another filesystem needs the plural variant.

Yeah, I can live with that :)

Thanks,
Eryu
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diff mbox

Patch

diff --git a/common/overlay b/common/overlay
index 1da4ab1..38fe994 100644
--- a/common/overlay
+++ b/common/overlay
@@ -138,9 +138,6 @@  _require_scratch_overlay_feature()
 	[ "$default" = Y ] || [ "$default" = N ] || \
 		_notrun "feature '${feature}' not supported by ${FSTYP}"
 
-	_scratch_mkfs > /dev/null 2>&1
-	_scratch_mount -o ${feature}=on || \
-		_notrun "${FSTYP} feature '${feature}' cannot be enabled on ${SCRATCH_DEV}"
 	# Check options to be sure. For example, Overlayfs will fallback to
 	# index=off if underlying fs does not support file handles.
 	# Overlayfs only displays mount option if it differs from the default.
@@ -149,5 +146,25 @@  _require_scratch_overlay_feature()
 	  ( [ "$default" = Y ] && ! _fs_options $SCRATCH_DEV | grep -q "${feature}=off" )) && \
 	    touch $SCRATCH_MNT/foo 2>/dev/null ) || \
 	        _notrun "${FSTYP} feature '${feature}' cannot be enabled on ${SCRATCH_DEV}"
+}
+
+# Require a set of overlayfs features
+_require_scratch_overlay_features()
+{
+	local features=( $* )
+	local opts="rw"
+
+	for feature in ${features[*]}; do
+		opts+=",${feature}=on"
+	done
+
+	_scratch_mkfs > /dev/null 2>&1
+	_scratch_mount -o $opts || \
+		_notrun "overlay options '$opts' cannot be enabled on ${SCRATCH_DEV}"
+
+	for feature in ${features[*]}; do
+		_require_scratch_overlay_feature ${feature}
+	done
+
 	_scratch_unmount
 }
diff --git a/common/rc b/common/rc
index 77a4eb4..3b81061 100644
--- a/common/rc
+++ b/common/rc
@@ -3658,22 +3658,25 @@  _get_fs_sysfs_attr()
 	cat /sys/fs/${FSTYP}/${dname}/${attr}
 }
 
-# Generic test for specific filesystem feature.
+# Generic test for specific filesystem features.
 # Currently only implemented to test overlayfs features.
-_require_scratch_feature()
+_require_scratch_features()
 {
-	local feature=$1
-
 	case "$FSTYP" in
 	overlay)
-		_require_scratch_overlay_feature ${feature}
+		_require_scratch_overlay_features $*
 		;;
 	*)
-		_fail "Test for feature '${feature}' of ${FSTYP} is not implemented"
+		_fail "Test for features '$*' of ${FSTYP} is not implemented"
 		;;
 	esac
 }
 
+_require_scratch_feature()
+{
+	_require_scratch_features $1
+}
+
 init_rc
 
 ################################################################################