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xfs: add error injection to test file mapping exchange recovery

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Add an errortag so that we can test recovery of exchmaps log items.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong 2024-04-15 14:54:19 -07:00
parent 42672471f9
commit 5fd022ec7d
3 changed files with 9 additions and 1 deletions
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4
fs/xfs/libxfs/xfs_errortag.h
View file

@ -63,7 +63,8 @@
#define XFS_ERRTAG_ATTR_LEAF_TO_NODE 41
#define XFS_ERRTAG_WB_DELAY_MS 42
#define XFS_ERRTAG_WRITE_DELAY_MS 43
#define XFS_ERRTAG_MAX 44
#define XFS_ERRTAG_EXCHMAPS_FINISH_ONE 44
#define XFS_ERRTAG_MAX 45
/*
* Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
@ -111,5 +112,6 @@
#define XFS_RANDOM_ATTR_LEAF_TO_NODE 1
#define XFS_RANDOM_WB_DELAY_MS 3000
#define XFS_RANDOM_WRITE_DELAY_MS 3000
#define XFS_RANDOM_EXCHMAPS_FINISH_ONE 1
#endif /* __XFS_ERRORTAG_H_ */

3
fs/xfs/libxfs/xfs_exchmaps.c
View file

@ -437,6 +437,9 @@ xfs_exchmaps_finish_one(
return error;
}
if (XFS_TEST_ERROR(false, tp->t_mountp, XFS_ERRTAG_EXCHMAPS_FINISH_ONE))
return -EIO;
/* If we still have work to do, ask for a new transaction. */
if (xmi_has_more_exchange_work(xmi) || xmi_has_postop_work(xmi)) {
trace_xfs_exchmaps_defer(tp->t_mountp, xmi);

3
fs/xfs/xfs_error.c
View file

@ -62,6 +62,7 @@ static unsigned int xfs_errortag_random_default[] = {
XFS_RANDOM_ATTR_LEAF_TO_NODE,
XFS_RANDOM_WB_DELAY_MS,
XFS_RANDOM_WRITE_DELAY_MS,
XFS_RANDOM_EXCHMAPS_FINISH_ONE,
};
struct xfs_errortag_attr {
@ -179,6 +180,7 @@ XFS_ERRORTAG_ATTR_RW(da_leaf_split, XFS_ERRTAG_DA_LEAF_SPLIT);
XFS_ERRORTAG_ATTR_RW(attr_leaf_to_node, XFS_ERRTAG_ATTR_LEAF_TO_NODE);
XFS_ERRORTAG_ATTR_RW(wb_delay_ms, XFS_ERRTAG_WB_DELAY_MS);
XFS_ERRORTAG_ATTR_RW(write_delay_ms, XFS_ERRTAG_WRITE_DELAY_MS);
XFS_ERRORTAG_ATTR_RW(exchmaps_finish_one, XFS_ERRTAG_EXCHMAPS_FINISH_ONE);
static struct attribute *xfs_errortag_attrs[] = {
XFS_ERRORTAG_ATTR_LIST(noerror),
@ -224,6 +226,7 @@ static struct attribute *xfs_errortag_attrs[] = {
XFS_ERRORTAG_ATTR_LIST(attr_leaf_to_node),
XFS_ERRORTAG_ATTR_LIST(wb_delay_ms),
XFS_ERRORTAG_ATTR_LIST(write_delay_ms),
XFS_ERRORTAG_ATTR_LIST(exchmaps_finish_one),
NULL,
};
ATTRIBUTE_GROUPS(xfs_errortag);