common/populate: create realtime refcount btree

Populate a realtime refcount btree when we're creating a sample fs.

Signed-off-by: "Darrick J. Wong" <djwong@kernel.org>

diff --git a/common/populate b/common/populate
index 02f999993387e273d43e6ae6684dbc1c90988c09..c89534dbffd840eebcadcde168552f8ae3440b6c 100644 (file)
--- a/common/populate
+++ b/common/populate
@@ -447,16 +447,30 @@ _scratch_xfs_populate() {
        local dir="${SCRATCH_MNT}/INOBT"
        __populate_create_dir "${dir}" "${nr}" true --file-pct 100
 
-       # Reverse-mapping btree
+       is_rt="$(_xfs_get_rtextents "$SCRATCH_MNT")"
        is_rmapbt="$(_xfs_has_feature "$SCRATCH_MNT" rmapbt -v)"
+       is_reflink="$(_xfs_has_feature "$SCRATCH_MNT" reflink -v)"
+
+       # Reverse-mapping btree
        if [ $is_rmapbt -gt 0 ]; then
                echo "+ rmapbt btree"
                nr="$((blksz * 2 / 24))"
                __populate_create_file $((blksz * nr)) "${SCRATCH_MNT}/RMAPBT"
        fi
 
+       # Realtime Reference-count btree comes before the rtrmapbt so that
+       # the refcount entries are created in rtgroup 0.
+       if [ $is_reflink -gt 0 ] && [ $is_rt -gt 0 ]; then
+               echo "+ rtreflink btree"
+               rt_blksz=$(_xfs_get_rtextsize "$SCRATCH_MNT")
+               nr="$((rt_blksz * 2 / 12))"
+               $XFS_IO_PROG -R -f -c 'truncate 0' "${SCRATCH_MNT}/RTREFCOUNTBT"
+               __populate_create_file $((blksz * nr)) "${SCRATCH_MNT}/RTREFCOUNTBT"
+               $XFS_IO_PROG -R -f -c 'truncate 0' "${SCRATCH_MNT}/RTREFCOUNTBT2"
+               cp --reflink=always "${SCRATCH_MNT}/RTREFCOUNTBT" "${SCRATCH_MNT}/RTREFCOUNTBT2"
+       fi
+
        # Realtime Reverse-mapping btree
-       is_rt="$(_xfs_get_rtextents "$SCRATCH_MNT")"
        if [ $is_rmapbt -gt 0 ] && [ $is_rt -gt 0 ]; then
                echo "+ rtrmapbt btree"
                nr="$((blksz * 2 / 24))"
@@ -465,7 +479,6 @@ _scratch_xfs_populate() {
        fi
 
        # Reference-count btree
-       is_reflink="$(_xfs_has_feature "$SCRATCH_MNT" reflink -v)"
        if [ $is_reflink -gt 0 ]; then
                echo "+ reflink btree"
                nr="$((blksz * 2 / 12))"
@@ -525,6 +538,7 @@ _scratch_xfs_populate() {
        __populate_fragment_file "${SCRATCH_MNT}/RMAPBT"
        __populate_fragment_file "${SCRATCH_MNT}/RTRMAPBT"
        __populate_fragment_file "${SCRATCH_MNT}/REFCOUNTBT"
+       __populate_fragment_file "${SCRATCH_MNT}/RTREFCOUNTBT"
 
        _scratch_unmount
 }
@@ -766,6 +780,10 @@ __populate_check_xfs_rgbtree_height() {
                path_format="/rtgroups/%u.rmap"
                bt_prefix="u3.rtrmapbt"
                ;;
+       "refcnt")
+               path_format="/rtgroups/%u.refcount"
+               bt_prefix="u3.rtrefcbt"
+               ;;
        *)
                _fail "Don't know about rt btree ${bt_type}"
                ;;
@@ -840,6 +858,8 @@ _scratch_xfs_populate_check() {
        test $is_reflink -ne 0 && __populate_check_xfs_agbtree_height "refcnt"
        test $is_rmapbt -ne 0 && test $is_rt -gt 0 && \
                __populate_check_xfs_rgbtree_height "rmap"
+       test $is_reflink -ne 0 && test $is_rt -gt 0 && \
+               __populate_check_xfs_rgbtree_height "refcnt"
 }
 
 # Check data fork format of ext4 file