On Mon, Nov 30, 2015 at 10:17 AM, Chandan Rajendra <chandan@xxxxxxxxxxxxxxxxxx> wrote: > This commit makes use of the new _filter_xfs_io_blocks_modified filtering > function to print information in terms of file blocks rather than file > offset. > > Signed-off-by: Chandan Rajendra <chandan@xxxxxxxxxxxxxxxxxx> Reviewed-by: Filipe Manana <fdmanana@xxxxxxxx> Thanks! > --- > tests/btrfs/097 | 41 ++++++++++++++++++++++++----------------- > tests/btrfs/097.out | 23 +++++++++++++++++------ > 2 files changed, 41 insertions(+), 23 deletions(-) > > diff --git a/tests/btrfs/097 b/tests/btrfs/097 > index d9138ea..d1cfff1 100755 > --- a/tests/btrfs/097 > +++ b/tests/btrfs/097 > @@ -57,22 +57,29 @@ mkdir $send_files_dir > _scratch_mkfs >>$seqres.full 2>&1 > _scratch_mount > > -# Create our test file with a single extent of 64K starting at file offset 128K. > -$XFS_IO_PROG -f -c "pwrite -S 0xaa 128K 64K" $SCRATCH_MNT/foo | _filter_xfs_io > +BLOCK_SIZE=$(get_block_size $SCRATCH_MNT) > + > +# Create our test file with a single extent of 16 blocks starting at a file > +# offset mapped by 32nd block. > +$XFS_IO_PROG -f -c "pwrite -S 0xaa $((32 * $BLOCK_SIZE)) $((16 * $BLOCK_SIZE))" \ > + $SCRATCH_MNT/foo | _filter_xfs_io_blocks_modified > > _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1 > > # Now clone parts of the original extent into lower offsets of the file. > # > # The first clone operation adds a file extent item to file offset 0 that points > -# to our initial extent with a data offset of 16K. The corresponding data back > -# reference in the extent tree has an offset of 18446744073709535232, which is > -# the result of file_offset - data_offset = 0 - 16K. > -# > -# The second clone operation adds a file extent item to file offset 16K that > -# points to our initial extent with a data offset of 48K. The corresponding data > -# back reference in the extent tree has an offset of 18446744073709518848, which > -# is the result of file_offset - data_offset = 16K - 48K. > +# to our initial extent with a data offset of 4 blocks. The corresponding data back > +# reference in the extent tree has a large value for the 'offset' field, which is > +# the result of file_offset - data_offset = 0 - (file offset of 4th block). For > +# example in case of 4k block size, it will be 0 - 16k = 18446744073709535232. > + > +# The second clone operation adds a file extent item to file offset mapped by > +# 4th block that points to our initial extent with a data offset of 12 > +# blocks. The corresponding data back reference in the extent tree has a large > +# value for the 'offset' field, which is the result of file_offset - data_offset > +# = (file offset of 4th block) - (file offset of 12th block). For example in > +# case of 4k block size, it will be 16K - 48K = 18446744073709518848. > # > # Those large back reference offsets (result of unsigned arithmetic underflow) > # confused the back reference walking code (used by an incremental send and > @@ -83,10 +90,10 @@ _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap1 > # "BTRFS error (device sdc): did not find backref in send_root. inode=257, \ > # offset=0, disk_byte=12845056 found extent=12845056" > # > -$CLONER_PROG -s $(((128 + 16) * 1024)) -d 0 -l $((16 * 1024)) \ > - $SCRATCH_MNT/foo $SCRATCH_MNT/foo > -$CLONER_PROG -s $(((128 + 48) * 1024)) -d $((16 * 1024)) -l $((16 * 1024)) \ > +$CLONER_PROG -s $(((32 + 4) * $BLOCK_SIZE)) -d 0 -l $((4 * $BLOCK_SIZE)) \ > $SCRATCH_MNT/foo $SCRATCH_MNT/foo > +$CLONER_PROG -s $(((32 + 12) * $BLOCK_SIZE)) -d $((4 * $BLOCK_SIZE)) \ > + -l $((4 * $BLOCK_SIZE)) $SCRATCH_MNT/foo $SCRATCH_MNT/foo > > _run_btrfs_util_prog subvolume snapshot -r $SCRATCH_MNT $SCRATCH_MNT/mysnap2 > > @@ -94,8 +101,8 @@ _run_btrfs_util_prog send $SCRATCH_MNT/mysnap1 -f $send_files_dir/1.snap > _run_btrfs_util_prog send -p $SCRATCH_MNT/mysnap1 $SCRATCH_MNT/mysnap2 \ > -f $send_files_dir/2.snap > > -echo "File digest in the original filesystem:" > -md5sum $SCRATCH_MNT/mysnap2/foo | _filter_scratch > +echo "File contents in the original filesystem:" > +od -t x1 $SCRATCH_MNT/mysnap2/foo | _filter_od > > # Now recreate the filesystem by receiving both send streams and verify we get > # the same file contents that the original filesystem had. > @@ -106,8 +113,8 @@ _scratch_mount > _run_btrfs_util_prog receive $SCRATCH_MNT -f $send_files_dir/1.snap > _run_btrfs_util_prog receive $SCRATCH_MNT -f $send_files_dir/2.snap > > -echo "File digest in the new filesystem:" > -md5sum $SCRATCH_MNT/mysnap2/foo | _filter_scratch > +echo "File contents in the new filesystem:" > +od -t x1 $SCRATCH_MNT/mysnap2/foo | _filter_od > > status=0 > exit > diff --git a/tests/btrfs/097.out b/tests/btrfs/097.out > index 5e87eb2..aa9e549 100644 > --- a/tests/btrfs/097.out > +++ b/tests/btrfs/097.out > @@ -1,7 +1,18 @@ > QA output created by 097 > -wrote 65536/65536 bytes at offset 131072 > -XXX Bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) > -File digest in the original filesystem: > -6c6079335cff141b8a31233ead04cbff SCRATCH_MNT/mysnap2/foo > -File digest in the new filesystem: > -6c6079335cff141b8a31233ead04cbff SCRATCH_MNT/mysnap2/foo > +Blocks modified: [32 - 47] > +File contents in the original filesystem: > +0 aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa > +* > +10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > +* > +40 aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa > +* > +60 > +File contents in the new filesystem: > +0 aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa > +* > +10 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > +* > +40 aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa aa > +* > +60 > -- > 2.1.0 > -- Filipe David Manana, "Reasonable men adapt themselves to the world. Unreasonable men adapt the world to themselves. That's why all progress depends on unreasonable men." -- To unsubscribe from this list: send the line "unsubscribe fstests" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
