xfs/271: fix test failure on non-reflink filesystems

This test creates an empty filesystem with rmap btrees enabled, and then
checks that GETFSMAP corresponds (roughly) with what we expect mkfs to
have written to the filesystem.

Unfortunately, the test's calculation for the number of "per-AG
metadata" extents is not quite correct.  For a filesystem with a
refcount btree, the rmapbt and agfl blocks will be reported separately,
but for non-reflink filesystems, GETFSMAP merges the records.

Since this test counts the number of records, fix the calculation.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com>
Signed-off-by: Eryu Guan <guaneryu@gmail.com>
This commit is contained in:
Darrick J. Wong
2021-03-02 15:22:45 -08:00
committed by Eryu Guan
parent 71636cfbaf
commit 5c076a5adb
+11 -1
View File
@@ -38,6 +38,16 @@ _scratch_mount
agcount=$(_xfs_mount_agcount $SCRATCH_MNT)
# mkfs lays out btree root blocks in the order bnobt, cntbt, inobt, finobt,
# rmapbt, refcountbt, and then allocates AGFL blocks. Since GETFSMAP has the
# same owner (per-AG metadata) for rmap btree blocks and blocks on the AGFL and
# the reverse mapping index merges records, the number of per-AG extents
# reported will vary depending on whether the refcount btree is enabled.
$XFS_INFO_PROG $SCRATCH_MNT | grep -q reflink=1
has_reflink=$(( 1 - $? ))
perag_metadata_exts=2
test $has_reflink -gt 0 && perag_metadata_exts=$((perag_metadata_exts + 1))
echo "Get fsmap" | tee -a $seqres.full
$XFS_IO_PROG -c 'fsmap -v' $SCRATCH_MNT > $TEST_DIR/fsmap
cat $TEST_DIR/fsmap >> $seqres.full
@@ -48,7 +58,7 @@ _within_tolerance "AG header count" $(wc -l < $TEST_DIR/testout) $agcount 0 -v
echo "Check freesp/rmap btrees" | tee -a $seqres.full
grep 'per-AG metadata[[:space:]]*[0-9]*[[:space:]]*([0-9]*\.\.' $TEST_DIR/fsmap | tee -a $seqres.full > $TEST_DIR/testout
_within_tolerance "freesp extent count" $(wc -l < $TEST_DIR/testout) $((agcount * 3)) 0 999999 -v
_within_tolerance "freesp extent count" $(wc -l < $TEST_DIR/testout) $((agcount * perag_metadata_exts)) 0 999999 -v
echo "Check inode btrees" | tee -a $seqres.full
grep 'inode btree[[:space:]]*[0-9]*[[:space:]]*([0-9]*\.\.' $TEST_DIR/fsmap | tee -a $seqres.full > $TEST_DIR/testout