xfs: add leaf split error tag

Add an error tag on xfs_da3_split to test log attribute recovery
and replay.

Signed-off-by: Catherine Hoang <catherine.hoang@oracle.com>
Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Chandan Babu R <chandan.babu@oracle.com>
Signed-off-by: Allison Henderson <allison.henderson@oracle.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>

diff --git a/fs/xfs/libxfs/xfs_da_btree.c b/fs/xfs/libxfs/xfs_da_btree.c
index 9dc1ecb..aa74f3f 100644 (file)
--- a/fs/xfs/libxfs/xfs_da_btree.c
+++ b/fs/xfs/libxfs/xfs_da_btree.c
@@ -22,6 +22,7 @@
 #include "xfs_trace.h"
 #include "xfs_buf_item.h"
 #include "xfs_log.h"
+#include "xfs_errortag.h"
 
 /*
  * xfs_da_btree.c
@@ -482,6 +483,9 @@ xfs_da3_split(
 
        trace_xfs_da_split(state->args);
 
+       if (XFS_TEST_ERROR(false, state->mp, XFS_ERRTAG_DA_LEAF_SPLIT))
+               return -EIO;
+
        /*
         * Walk back up the tree splitting/inserting/adjusting as necessary.
         * If we need to insert and there isn't room, split the node, then

diff --git a/fs/xfs/libxfs/xfs_errortag.h b/fs/xfs/libxfs/xfs_errortag.h
index c15d234..6d06a50 100644 (file)
--- a/fs/xfs/libxfs/xfs_errortag.h
+++ b/fs/xfs/libxfs/xfs_errortag.h
@@ -60,7 +60,8 @@
 #define XFS_ERRTAG_BMAP_ALLOC_MINLEN_EXTENT            37
 #define XFS_ERRTAG_AG_RESV_FAIL                                38
 #define XFS_ERRTAG_LARP                                        39
-#define XFS_ERRTAG_MAX                                 40
+#define XFS_ERRTAG_DA_LEAF_SPLIT                       40
+#define XFS_ERRTAG_MAX                                 41
 
 /*
  * Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
@@ -105,5 +106,6 @@
 #define XFS_RANDOM_BMAP_ALLOC_MINLEN_EXTENT            1
 #define XFS_RANDOM_AG_RESV_FAIL                                1
 #define XFS_RANDOM_LARP                                        1
+#define XFS_RANDOM_DA_LEAF_SPLIT                       1
 
 #endif /* __XFS_ERRORTAG_H_ */

diff --git a/fs/xfs/xfs_error.c b/fs/xfs/xfs_error.c
index 666f483..2aa5d4d 100644 (file)
--- a/fs/xfs/xfs_error.c
+++ b/fs/xfs/xfs_error.c
@@ -58,6 +58,7 @@ static unsigned int xfs_errortag_random_default[] = {
        XFS_RANDOM_BMAP_ALLOC_MINLEN_EXTENT,
        XFS_RANDOM_AG_RESV_FAIL,
        XFS_RANDOM_LARP,
+       XFS_RANDOM_DA_LEAF_SPLIT,
 };
 
 struct xfs_errortag_attr {
@@ -172,6 +173,7 @@ XFS_ERRORTAG_ATTR_RW(reduce_max_iextents,   XFS_ERRTAG_REDUCE_MAX_IEXTENTS);
 XFS_ERRORTAG_ATTR_RW(bmap_alloc_minlen_extent, XFS_ERRTAG_BMAP_ALLOC_MINLEN_EXTENT);
 XFS_ERRORTAG_ATTR_RW(ag_resv_fail, XFS_ERRTAG_AG_RESV_FAIL);
 XFS_ERRORTAG_ATTR_RW(larp,             XFS_ERRTAG_LARP);
+XFS_ERRORTAG_ATTR_RW(da_leaf_split,    XFS_ERRTAG_DA_LEAF_SPLIT);
 
 static struct attribute *xfs_errortag_attrs[] = {
        XFS_ERRORTAG_ATTR_LIST(noerror),
@@ -214,6 +216,7 @@ static struct attribute *xfs_errortag_attrs[] = {
        XFS_ERRORTAG_ATTR_LIST(bmap_alloc_minlen_extent),
        XFS_ERRORTAG_ATTR_LIST(ag_resv_fail),
        XFS_ERRORTAG_ATTR_LIST(larp),
+       XFS_ERRORTAG_ATTR_LIST(da_leaf_split),
        NULL,
 };
 ATTRIBUTE_GROUPS(xfs_errortag);