On Tue, Apr 17, 2018 at 10:59:17AM -0700, Darrick J. Wong wrote:
> On Tue, Apr 17, 2018 at 02:11:40PM +0800, yang xu wrote:
> > xfsprogs commit 4222d00("db: write via array indexing doesn't
> > work") fixes a bug that xfs_db write can't support array indexing.
> > This function will check whether the bug is fixed on the current
> > xfsprogs.
> >
> > xfs/444 applies the function, and skips if this bug exists.
> >
> > Signed-off-by: yang xu <xuyang.jy@xxxxxxxxxxxxxx>
> > ---
> > common/xfs | 17 +++++++++++++++++
> > tests/xfs/444 | 1 +
> > 2 files changed, 18 insertions(+)
> >
> > diff --git a/common/xfs b/common/xfs
> > index 3169f87..0b59994 100644
> > --- a/common/xfs
> > +++ b/common/xfs
> > @@ -701,3 +701,20 @@ _scratch_xfs_set_sb_field()
> > {
> > _scratch_xfs_set_metadata_field "$1" "$2" "sb 0"
> > }
> > +
> > +#Before xfsprogs commit 4222d000ed("db: write via array indexing doesn't work"),
> > +##xfs_db command to write a specific AGFL index doesn't work.
I'll add more comments here to explain why we require a bug fix instead
of exposing the bug to users, e.g.
"It's a bug in a diagnostic tool that is only used by XFS developers as
a test infrastructure, so we can treat it as a infrastructure dependency
as all other _require rules."
> > +_require_xfs_db_write_array()
> > +{
> > + local supported=0
> > +
> > + _require_test
> > + touch $TEST_DIR/$seq.img
> > + $MKFS_XFS_PROG -d file,name=$TEST_DIR/$seq.img,size=512m >/dev/null 2>&1
> > + $XFS_DB_PROG -x -c "agfl 0" -c "write bno[32] 78" $TEST_DIR/$seq.img \
> > + >/dev/null 2>&1
> > + $XFS_DB_PROG -x -c "agfl 0" -c "print bno[32]" $TEST_DIR/$seq.img \
> > + | grep -q "bno\[32\] = 78" && supported=1
> > + rm -f $TEST_DIR/$seq.img
> > + [ $supported -eq 0 ] && _notrun "xfs_db write can't support array"
> > +}
> > diff --git a/tests/xfs/444 b/tests/xfs/444
> > index 141be52..9700422 100755
> > --- a/tests/xfs/444
> > +++ b/tests/xfs/444
> > @@ -54,6 +54,7 @@ _supported_os Linux
> > _require_check_dmesg
> > _require_scratch
> > _require_test_program "punch-alternating"
> > +_require_xfs_db_write_array
>
> Looks ok,
> Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Thanks for the review!
Eryu
>
> --D
>
> >
> > # This is only a v5 filesystem problem
> > _require_scratch_xfs_crc
> > --
> > 1.8.3.1
> >
> >
> >
> > --
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