On Fri, Sep 6, 2024 at 11:39 AM Qu Wenruo <quwenruo.btrfs@xxxxxxx> wrote:
>
>
>
> 在 2024/9/6 01:08, fdmanana@xxxxxxxxxx 写道:
> > From: Filipe Manana <fdmanana@xxxxxxxx>
> >
> > Currently btrfs/319 assumes there is no compression and that the files
> > get a single extent (1 fiemap line) with a size of 1048581 bytes. However
> > when testing with compression, for example by passing "-o compress" to
> > MOUNT_OPTIONS environment variable, we get several extents and two lines
> > of fiemap output, which makes the test fail since it hardcodes the fiemap
> > output:
> >
> > $ MOUNT_OPTIONS="-o compress" ./check btrfs/319
> > FSTYP -- btrfs
> > PLATFORM -- Linux/x86_64 debian0 6.11.0-rc6-btrfs-next-173+ #1 SMP PREEMPT_DYNAMIC Tue Sep 3 17:40:24 WEST 2024
> > MKFS_OPTIONS -- /dev/sdc
> > MOUNT_OPTIONS -- -o compress /dev/sdc /home/fdmanana/btrfs-tests/scratch_1
> >
> > btrfs/319 1s ... - output mismatch (see /home/fdmanana/git/hub/xfstests/results//btrfs/319.out.bad)
> > --- tests/btrfs/319.out 2024-08-12 14:16:55.653383284 +0100
> > +++ /home/fdmanana/git/hub/xfstests/results//btrfs/319.out.bad 2024-09-05 15:24:53.323076548 +0100
> > @@ -6,11 +6,13 @@
> > e61178ee0288ebe3fa36a3c975b02c94 SCRATCH_MNT/snap/foo
> > e61178ee0288ebe3fa36a3c975b02c94 SCRATCH_MNT/snap/bar
> > File bar fiemap in the original filesystem:
> > -0: [0..2055]: shared|last
> > +0: [0..2047]: shared
> > +1: [2048..2055]: shared|last
> > Creating a new filesystem to receive the send stream...
> > ...
> > (Run 'diff -u /home/fdmanana/git/hub/xfstests/tests/btrfs/319.out /home/fdmanana/git/hub/xfstests/results//btrfs/319.out.bad' to see the entire diff)
> >
> > HINT: You _MAY_ be missing kernel fix:
> > 46a6e10a1ab1 btrfs: send: allow cloning non-aligned extent if it ends at i_size
> >
> > Ran: btrfs/319
> > Failures: btrfs/319
> > Failed 1 of 1 tests
> >
> > So change the test to not rely on the fiemap output in its golden output
> > and instead just check if all the extents reported by fiemap have the
> > shared flag set (failing if there are any without the shared flag).
>
> Looks good to me.
>
> Reviewed-by: Qu Wenruo <wqu@xxxxxxxx>
>
> Just one minor improvement to make debug a little easier.
>
> >
> > Signed-off-by: Filipe Manana <fdmanana@xxxxxxxx>
> > ---
> > tests/btrfs/319 | 19 +++++++++++++++----
> > tests/btrfs/319.out | 4 ----
> > 2 files changed, 15 insertions(+), 8 deletions(-)
> >
> > diff --git a/tests/btrfs/319 b/tests/btrfs/319
> > index 975c1497..7cfd3d00 100755
> > --- a/tests/btrfs/319
> > +++ b/tests/btrfs/319
> > @@ -32,6 +32,19 @@ _require_odirect
> > _fixed_by_kernel_commit 46a6e10a1ab1 \
> > "btrfs: send: allow cloning non-aligned extent if it ends at i_size"
> >
> > +check_all_extents_shared()
> > +{
> > + local file=$1
> > + local fiemap_output
> > +
> > + fiemap_output=$($XFS_IO_PROG -r -c "fiemap -v" $file | _filter_fiemap_flags)
>
> Maybe also save the full unfiltered output to seqres.full?
Hum, why?
Do you think looking at the flags in hexadecimal values instead of
symbolic names like "shared", "encoded", "last", etc, is easier to
read?
Thanks.
>
> Thanks,
> Qu
>
> > + echo "$fiemap_output" | grep -qv 'shared'
> > + if [ $? -eq 0 ]; then
> > + echo -e "Found non-shared extents for file $file:\n"
> > + echo "$fiemap_output"
> > + fi
> > +}
> > +
> > send_files_dir=$TEST_DIR/btrfs-test-$seq
> > send_stream=$send_files_dir/snap.stream
> >
> > @@ -58,8 +71,7 @@ echo "File digests in the original filesystem:"
> > md5sum $SCRATCH_MNT/snap/foo | _filter_scratch
> > md5sum $SCRATCH_MNT/snap/bar | _filter_scratch
> >
> > -echo "File bar fiemap in the original filesystem:"
> > -$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap/bar | _filter_fiemap_flags
> > +check_all_extents_shared "$SCRATCH_MNT/snap/bar"
> >
> > echo "Creating a new filesystem to receive the send stream..."
> > _scratch_unmount
> > @@ -72,8 +84,7 @@ echo "File digests in the new filesystem:"
> > md5sum $SCRATCH_MNT/snap/foo | _filter_scratch
> > md5sum $SCRATCH_MNT/snap/bar | _filter_scratch
> >
> > -echo "File bar fiemap in the new filesystem:"
> > -$XFS_IO_PROG -r -c "fiemap -v" $SCRATCH_MNT/snap/bar | _filter_fiemap_flags
> > +check_all_extents_shared "$SCRATCH_MNT/snap/bar"
> >
> > # success, all done
> > status=0
> > diff --git a/tests/btrfs/319.out b/tests/btrfs/319.out
> > index 14079dbe..18a50ff8 100644
> > --- a/tests/btrfs/319.out
> > +++ b/tests/btrfs/319.out
> > @@ -5,12 +5,8 @@ Creating snapshot and a send stream for it...
> > File digests in the original filesystem:
> > e61178ee0288ebe3fa36a3c975b02c94 SCRATCH_MNT/snap/foo
> > e61178ee0288ebe3fa36a3c975b02c94 SCRATCH_MNT/snap/bar
> > -File bar fiemap in the original filesystem:
> > -0: [0..2055]: shared|last
> > Creating a new filesystem to receive the send stream...
> > At subvol snap
> > File digests in the new filesystem:
> > e61178ee0288ebe3fa36a3c975b02c94 SCRATCH_MNT/snap/foo
> > e61178ee0288ebe3fa36a3c975b02c94 SCRATCH_MNT/snap/bar
> > -File bar fiemap in the new filesystem:
> > -0: [0..2055]: shared|last
