On Thu, Oct 20, 2022 at 02:21:08PM -0700, Darrick J. Wong wrote:
> On Thu, Oct 20, 2022 at 08:15:34PM +0800, Zorro Lang wrote:
> > On Tue, Oct 18, 2022 at 03:45:38PM -0700, Darrick J. Wong wrote:
> > > From: Darrick J. Wong <djwong@xxxxxxxxxx>
> > >
> > > There are a lot of places where we open-code detecting the realtime
> > > extent size and extent count of a specific filesystem. Refactor this
> > > into a couple of helpers to clean up the code.
> > >
> > > Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> > > ---
> > > common/populate | 2 +-
> > > common/xfs | 29 +++++++++++++++++++++++++++--
> > > tests/xfs/146 | 2 +-
> > > tests/xfs/147 | 2 +-
> > > tests/xfs/530 | 3 +--
> > > 5 files changed, 31 insertions(+), 7 deletions(-)
> > >
> > >
> > > diff --git a/common/populate b/common/populate
> > > index 23b2fecf69..d9d4c6c300 100644
> > > --- a/common/populate
> > > +++ b/common/populate
> > > @@ -323,7 +323,7 @@ _scratch_xfs_populate() {
> > > fi
> > >
> > > # Realtime Reverse-mapping btree
> > > - is_rt="$($XFS_INFO_PROG "${SCRATCH_MNT}" | grep -c 'rtextents=[1-9]')"
> > > + is_rt="$(_xfs_get_rtextents "$SCRATCH_MNT")"
> > > if [ $is_rmapbt -gt 0 ] && [ $is_rt -gt 0 ]; then
> > > echo "+ rtrmapbt btree"
> > > nr="$((blksz * 2 / 32))"
> > > diff --git a/common/xfs b/common/xfs
> > > index 6445bfd9db..20da537a9d 100644
> > > --- a/common/xfs
> > > +++ b/common/xfs
> > > @@ -174,6 +174,24 @@ _scratch_mkfs_xfs()
> > > return $mkfs_status
> > > }
> > >
> > > +# Get the number of realtime extents of a mounted filesystem.
> > > +_xfs_get_rtextents()
> > > +{
> > > + local path="$1"
> > > +
> > > + $XFS_INFO_PROG "$path" | grep 'rtextents' | \
> > > + sed -e 's/^.*rtextents=\([0-9]*\).*$/\1/g'
> >
> > Same as patch 2/3, how about:
> >
> > $XFS_INFO_PROG "$path" | sed -n "s/^.*rtextents=\([[:digit:]]*\).*/\1/p"
>
> Actually, if you don't mind, I'd like to retain the hoisted grep/sed
> patterns in this patch (and patch 2) and add a new patch that simplifies
> the grep|sed pattern throughout common/xfs.
Sure, that makes sense too, I'm OK to have one more patch. Actually that's
not a necessary change, I don't know if it's worth being a individual patch.
Anyway, I have no objection on that:)
Thanks,
Zorro
>
> >
> > and ...
> >
> > > +}
> > > +
> > > +# Get the realtime extent size of a mounted filesystem.
> > > +_xfs_get_rtextsize()
> > > +{
> > > + local path="$1"
> > > +
> > > + $XFS_INFO_PROG "$path" | grep 'realtime.*extsz' | \
> > > + sed -e 's/^.*extsz=\([0-9]*\).*$/\1/g'
> >
> > ...
> > $XFS_INFO_PROG "$path" | sed -n "s/^realtime.*extsz=\([[:digit:]]*\).*/\1/p"
>
> But thanks for getting me most of the way there. :)
>
> > > +}
> > > +
> > > # Get the size of an allocation unit of a file. Normally this is just the
> > > # block size of the file, but for realtime files, this is the realtime extent
> > > # size.
> > > @@ -191,7 +209,7 @@ _xfs_get_file_block_size()
> > > while ! $XFS_INFO_PROG "$path" &>/dev/null && [ "$path" != "/" ]; do
> > > path="$(dirname "$path")"
> > > done
> > > - $XFS_INFO_PROG "$path" | grep realtime | sed -e 's/^.*extsz=\([0-9]*\).*$/\1/g'
> > > + _xfs_get_rtextsize "$path"
> > > }
> > >
> > > # Decide if this path is a file on the realtime device
> > > @@ -436,13 +454,20 @@ _require_xfs_crc()
> > > # third option is -v, echo 1 for success and 0 for not.
> > > #
> > > # Starting with xfsprogs 4.17, this also works for unmounted filesystems.
> > > +# The feature 'realtime' looks for rtextents > 0.
> > > _xfs_has_feature()
> > > {
> > > local fs="$1"
> > > local feat="$2"
> > > local verbose="$3"
> > > + local feat_regex="1"
> > >
> > > - local answer="$($XFS_INFO_PROG "$fs" 2>&1 | grep -w -c "$feat=1")"
> > > + if [ "$feat" = "realtime" ]; then
> > > + feat="rtextents"
> > > + feat_regex="[1-9][0-9]*"
> > > + fi
> >
> > How about use this format:
> >
> > case "$feat" in
> > realtime)
> > feat="rtextents"
> > feat_regex="[1-9][0-9]*"
> > ;;
> > ...)
> > feat="..."
> > feat_regex="..."
> > ;;
> > *)
> > feat="$2“
> > feat_regex="1"
> > ;;
> > esac
> >
> > due to I think you might add more "$feat" which not simply equal to 1/0 later :)
>
> I haven't, but I don't mind setting things up for the future.
>
> --D
>
> > Others looks good to me.
> >
> > Thanks,
> > Zorro
> >
> > > +
> > > + local answer="$($XFS_INFO_PROG "$fs" 2>&1 | grep -E -w -c "$feat=$feat_regex")"
> > > if [ "$answer" -ne 0 ]; then
> > > test "$verbose" = "-v" && echo 1
> > > return 0
> > > diff --git a/tests/xfs/146 b/tests/xfs/146
> > > index 5516d396bf..123bdff59f 100755
> > > --- a/tests/xfs/146
> > > +++ b/tests/xfs/146
> > > @@ -31,7 +31,7 @@ _scratch_mkfs > $seqres.full
> > > _scratch_mount >> $seqres.full
> > >
> > > blksz=$(_get_block_size $SCRATCH_MNT)
> > > -rextsize=$($XFS_INFO_PROG $SCRATCH_MNT | grep realtime.*extsz | sed -e 's/^.*extsz=\([0-9]*\).*$/\1/g')
> > > +rextsize=$(_xfs_get_rtextsize "$SCRATCH_MNT")
> > > rextblks=$((rextsize / blksz))
> > >
> > > echo "blksz $blksz rextsize $rextsize rextblks $rextblks" >> $seqres.full
> > > diff --git a/tests/xfs/147 b/tests/xfs/147
> > > index e21fdd330c..33b3c99633 100755
> > > --- a/tests/xfs/147
> > > +++ b/tests/xfs/147
> > > @@ -29,7 +29,7 @@ _scratch_mkfs -r extsize=256k > $seqres.full
> > > _scratch_mount >> $seqres.full
> > >
> > > blksz=$(_get_block_size $SCRATCH_MNT)
> > > -rextsize=$($XFS_INFO_PROG $SCRATCH_MNT | grep realtime.*extsz | sed -e 's/^.*extsz=\([0-9]*\).*$/\1/g')
> > > +rextsize=$(_xfs_get_rtextsize "$SCRATCH_MNT")
> > > rextblks=$((rextsize / blksz))
> > >
> > > echo "blksz $blksz rextsize $rextsize rextblks $rextblks" >> $seqres.full
> > > diff --git a/tests/xfs/530 b/tests/xfs/530
> > > index c960738db7..56f5e7ebdb 100755
> > > --- a/tests/xfs/530
> > > +++ b/tests/xfs/530
> > > @@ -73,8 +73,7 @@ _try_scratch_mount || _notrun "Couldn't mount fs with synthetic rt volume"
> > > formatted_blksz="$(_get_block_size $SCRATCH_MNT)"
> > > test "$formatted_blksz" -ne "$dbsize" && \
> > > _notrun "Tried to format with $dbsize blocksize, got $formatted_blksz."
> > > -$XFS_INFO_PROG $SCRATCH_MNT | grep -E -q 'realtime.*blocks=0' && \
> > > - _notrun "Filesystem should have a realtime volume"
> > > +_require_xfs_has_feature "$SCRATCH_MNT" realtime
> > >
> > > echo "Consume free space"
> > > fillerdir=$SCRATCH_MNT/fillerdir
> > >
>
