This test is failing on filesystems with 64k blocksize since the leaf
hdr.firstused field is 16 bit and as such trying to reset it to $dbsize
overflows and is rejected by xfs_db. The leaf is never properly resetted
and the discrepancy is picked up by xfs_repair, thus failing the test.
Fix it by setting it to XFS_ATTR3_LEAF_NULLOFF (0) as this is the proper
on-disk value to indicate an empty leaf on 64k blocksized fses.
Signed-off-by: Anthony Iliopoulos <ailiop@xxxxxxxx>
---
tests/xfs/191 | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/tests/xfs/191 b/tests/xfs/191
index 4f0a9b9eeef5..8dd875fcd28b 100755
--- a/tests/xfs/191
+++ b/tests/xfs/191
@@ -78,10 +78,20 @@ make_empty_leaf() {
base=$(_scratch_xfs_get_metadata_field "hdr.freemap[0].base" "inode $inum" "ablock 0")
+ # 64k dbsize is a special case since it overflows the 16 bit firstused
+ # field and it needs to be set to the special XFS_ATTR3_LEAF_NULLOFF (0)
+ # value to indicate a null leaf. For more details see kernel commit:
+ # e87021a2bc10 ("xfs: use larger in-core attr firstused field and detect overflow").
+ if [ $dbsize -eq 65536 ]; then
+ firstused=0;
+ else
+ firstused=$dbsize;
+ fi
+
_scratch_xfs_db -x -c "inode $inum" -c "ablock 0" \
-c "write -d hdr.count 0" \
-c "write -d hdr.usedbytes 0" \
- -c "write -d hdr.firstused $dbsize" \
+ -c "write -d hdr.firstused $firstused" \
-c "write -d hdr.freemap[0].size $((dbsize - base))" \
-c print >> $seqres.full
}
--
2.35.3
