* Copyright (C) 2017 Oracle.
* All Rights Reserved.
*/
-#ifndef __XFS_ERRORTAG_H_
+#if !defined(__XFS_ERRORTAG_H_) || defined(XFS_ERRTAG)
#define __XFS_ERRORTAG_H_
/*
- * error injection tags - the labels can be anything you want
- * but each tag should have its own unique number
+ * There are two ways to use this header file. The first way is to #include it
+ * bare, which will define all the XFS_ERRTAG_* error injection knobs for use
+ * with the XFS_TEST_ERROR macro. The second way is to enclose the #include
+ * with a #define for an XFS_ERRTAG macro, in which case the header will define
+ " an XFS_ERRTAGS macro that expands to invoke that XFS_ERRTAG macro for each
+ * defined error injection knob.
*/
+/*
+ * These are the actual error injection tags. The numbers should be consecutive
+ * because arrays are sized based on the maximum.
+ */
#define XFS_ERRTAG_NOERROR 0
#define XFS_ERRTAG_IFLUSH_1 1
#define XFS_ERRTAG_IFLUSH_2 2
* Random factors for above tags, 1 means always, 2 means 1/2 time, etc.
*/
#define XFS_RANDOM_DEFAULT 100
-#define XFS_RANDOM_IFLUSH_1 XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_IFLUSH_2 XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_IFLUSH_3 XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_IFLUSH_4 XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_IFLUSH_5 XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_IFLUSH_6 XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_DA_READ_BUF XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_BTREE_CHECK_LBLOCK (XFS_RANDOM_DEFAULT/4)
-#define XFS_RANDOM_BTREE_CHECK_SBLOCK XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_ALLOC_READ_AGF XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_IALLOC_READ_AGI XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_ITOBP_INOTOBP XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_IUNLINK XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_IUNLINK_REMOVE XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_DIR_INO_VALIDATE XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_BULKSTAT_READ_CHUNK XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_IODONE_IOERR (XFS_RANDOM_DEFAULT/10)
-#define XFS_RANDOM_STRATREAD_IOERR (XFS_RANDOM_DEFAULT/10)
-#define XFS_RANDOM_STRATCMPL_IOERR (XFS_RANDOM_DEFAULT/10)
-#define XFS_RANDOM_DIOWRITE_IOERR (XFS_RANDOM_DEFAULT/10)
-#define XFS_RANDOM_BMAPIFORMAT XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_FREE_EXTENT 1
-#define XFS_RANDOM_RMAP_FINISH_ONE 1
-#define XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE 1
-#define XFS_RANDOM_REFCOUNT_FINISH_ONE 1
-#define XFS_RANDOM_BMAP_FINISH_ONE 1
-#define XFS_RANDOM_AG_RESV_CRITICAL 4
-#define XFS_RANDOM_LOG_BAD_CRC 1
-#define XFS_RANDOM_LOG_ITEM_PIN 1
-#define XFS_RANDOM_BUF_LRU_REF 2
-#define XFS_RANDOM_FORCE_SCRUB_REPAIR 1
-#define XFS_RANDOM_FORCE_SUMMARY_RECALC 1
-#define XFS_RANDOM_IUNLINK_FALLBACK (XFS_RANDOM_DEFAULT/10)
-#define XFS_RANDOM_BUF_IOERROR XFS_RANDOM_DEFAULT
-#define XFS_RANDOM_REDUCE_MAX_IEXTENTS 1
-#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
-#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
-#define XFS_RANDOM_METAFILE_RESV_CRITICAL 4
+
+/*
+ * Table of errror injection knobs. The parameters to the XFS_ERRTAG macro are:
+ * 1. The XFS_ERRTAG_ flag but without the prefix;
+ * 2. The name of the sysfs knob; and
+ * 3. The default value for the knob.
+ */
+#ifdef XFS_ERRTAG
+# undef XFS_ERRTAGS
+# define XFS_ERRTAGS \
+XFS_ERRTAG(NOERROR, noerror, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(IFLUSH_1, iflush1, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(IFLUSH_2, iflush2, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(IFLUSH_3, iflush3, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(IFLUSH_4, iflush4, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(IFLUSH_5, iflush5, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(IFLUSH_6, iflush6, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(DA_READ_BUF, dareadbuf, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(BTREE_CHECK_LBLOCK, btree_chk_lblk, XFS_RANDOM_DEFAULT/4) \
+XFS_ERRTAG(BTREE_CHECK_SBLOCK, btree_chk_sblk, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(ALLOC_READ_AGF, readagf, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(IALLOC_READ_AGI, readagi, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(ITOBP_INOTOBP, itobp, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(IUNLINK, iunlink, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(IUNLINK_REMOVE, iunlinkrm, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(DIR_INO_VALIDATE, dirinovalid, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(BULKSTAT_READ_CHUNK, bulkstat, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(IODONE_IOERR, logiodone, XFS_RANDOM_DEFAULT/10) \
+XFS_ERRTAG(STRATREAD_IOERR, stratread, XFS_RANDOM_DEFAULT/10) \
+XFS_ERRTAG(STRATCMPL_IOERR, stratcmpl, XFS_RANDOM_DEFAULT/10) \
+XFS_ERRTAG(DIOWRITE_IOERR, diowrite, XFS_RANDOM_DEFAULT/10) \
+XFS_ERRTAG(BMAPIFORMAT, bmapifmt, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(FREE_EXTENT, free_extent, 1) \
+XFS_ERRTAG(RMAP_FINISH_ONE, rmap_finish_one, 1) \
+XFS_ERRTAG(REFCOUNT_CONTINUE_UPDATE, refcount_continue_update, 1) \
+XFS_ERRTAG(REFCOUNT_FINISH_ONE, refcount_finish_one, 1) \
+XFS_ERRTAG(BMAP_FINISH_ONE, bmap_finish_one, 1) \
+XFS_ERRTAG(AG_RESV_CRITICAL, ag_resv_critical, 4) \
+XFS_ERRTAG(LOG_BAD_CRC, log_bad_crc, 1) \
+XFS_ERRTAG(LOG_ITEM_PIN, log_item_pin, 1) \
+XFS_ERRTAG(BUF_LRU_REF, buf_lru_ref, 2) \
+XFS_ERRTAG(FORCE_SCRUB_REPAIR, force_repair, 1) \
+XFS_ERRTAG(FORCE_SUMMARY_RECALC, bad_summary, 1) \
+XFS_ERRTAG(IUNLINK_FALLBACK, iunlink_fallback, XFS_RANDOM_DEFAULT/10) \
+XFS_ERRTAG(BUF_IOERROR, buf_ioerror, XFS_RANDOM_DEFAULT) \
+XFS_ERRTAG(REDUCE_MAX_IEXTENTS, reduce_max_iextents, 1) \
+XFS_ERRTAG(BMAP_ALLOC_MINLEN_EXTENT, bmap_alloc_minlen_extent, 1) \
+XFS_ERRTAG(AG_RESV_FAIL, ag_resv_fail, 1) \
+XFS_ERRTAG(LARP, larp, 1) \
+XFS_ERRTAG(DA_LEAF_SPLIT, da_leaf_split, 1) \
+XFS_ERRTAG(ATTR_LEAF_TO_NODE, attr_leaf_to_node, 1) \
+XFS_ERRTAG(WB_DELAY_MS, wb_delay_ms, 3000) \
+XFS_ERRTAG(WRITE_DELAY_MS, write_delay_ms, 3000) \
+XFS_ERRTAG(EXCHMAPS_FINISH_ONE, exchmaps_finish_one, 1) \
+XFS_ERRTAG(METAFILE_RESV_CRITICAL, metafile_resv_crit, 4)
+#endif /* XFS_ERRTAG */
#endif /* __XFS_ERRORTAG_H_ */
#include "xfs_log_format.h"
#include "xfs_trans_resv.h"
#include "xfs_mount.h"
-#include "xfs_errortag.h"
#include "xfs_error.h"
#include "xfs_sysfs.h"
#include "xfs_inode.h"
#ifdef DEBUG
-static unsigned int xfs_errortag_random_default[] = {
- XFS_RANDOM_DEFAULT,
- XFS_RANDOM_IFLUSH_1,
- XFS_RANDOM_IFLUSH_2,
- XFS_RANDOM_IFLUSH_3,
- XFS_RANDOM_IFLUSH_4,
- XFS_RANDOM_IFLUSH_5,
- XFS_RANDOM_IFLUSH_6,
- XFS_RANDOM_DA_READ_BUF,
- XFS_RANDOM_BTREE_CHECK_LBLOCK,
- XFS_RANDOM_BTREE_CHECK_SBLOCK,
- XFS_RANDOM_ALLOC_READ_AGF,
- XFS_RANDOM_IALLOC_READ_AGI,
- XFS_RANDOM_ITOBP_INOTOBP,
- XFS_RANDOM_IUNLINK,
- XFS_RANDOM_IUNLINK_REMOVE,
- XFS_RANDOM_DIR_INO_VALIDATE,
- XFS_RANDOM_BULKSTAT_READ_CHUNK,
- XFS_RANDOM_IODONE_IOERR,
- XFS_RANDOM_STRATREAD_IOERR,
- XFS_RANDOM_STRATCMPL_IOERR,
- XFS_RANDOM_DIOWRITE_IOERR,
- XFS_RANDOM_BMAPIFORMAT,
- XFS_RANDOM_FREE_EXTENT,
- XFS_RANDOM_RMAP_FINISH_ONE,
- XFS_RANDOM_REFCOUNT_CONTINUE_UPDATE,
- XFS_RANDOM_REFCOUNT_FINISH_ONE,
- XFS_RANDOM_BMAP_FINISH_ONE,
- XFS_RANDOM_AG_RESV_CRITICAL,
- 0, /* XFS_RANDOM_DROP_WRITES has been removed */
- XFS_RANDOM_LOG_BAD_CRC,
- XFS_RANDOM_LOG_ITEM_PIN,
- XFS_RANDOM_BUF_LRU_REF,
- XFS_RANDOM_FORCE_SCRUB_REPAIR,
- XFS_RANDOM_FORCE_SUMMARY_RECALC,
- XFS_RANDOM_IUNLINK_FALLBACK,
- XFS_RANDOM_BUF_IOERROR,
- XFS_RANDOM_REDUCE_MAX_IEXTENTS,
- XFS_RANDOM_BMAP_ALLOC_MINLEN_EXTENT,
- XFS_RANDOM_AG_RESV_FAIL,
- XFS_RANDOM_LARP,
- XFS_RANDOM_DA_LEAF_SPLIT,
- XFS_RANDOM_ATTR_LEAF_TO_NODE,
- XFS_RANDOM_WB_DELAY_MS,
- XFS_RANDOM_WRITE_DELAY_MS,
- XFS_RANDOM_EXCHMAPS_FINISH_ONE,
- XFS_RANDOM_METAFILE_RESV_CRITICAL,
-};
+#define XFS_ERRTAG(_tag, _name, _default) \
+ [XFS_ERRTAG_##_tag] = (_default),
+#include "xfs_errortag.h"
+static unsigned int xfs_errortag_random_default[] = { XFS_ERRTAGS };
+#undef XFS_ERRTAG
struct xfs_errortag_attr {
struct attribute attr;
.store = xfs_errortag_attr_store,
};
-#define XFS_ERRORTAG_ATTR_RW(_name, _tag) \
+#define XFS_ERRTAG(_tag, _name, _default) \
static struct xfs_errortag_attr xfs_errortag_attr_##_name = { \
.attr = {.name = __stringify(_name), \
.mode = VERIFY_OCTAL_PERMISSIONS(S_IWUSR | S_IRUGO) }, \
- .tag = (_tag), \
-}
-
-#define XFS_ERRORTAG_ATTR_LIST(_name) &xfs_errortag_attr_##_name.attr
-
-XFS_ERRORTAG_ATTR_RW(noerror, XFS_ERRTAG_NOERROR);
-XFS_ERRORTAG_ATTR_RW(iflush1, XFS_ERRTAG_IFLUSH_1);
-XFS_ERRORTAG_ATTR_RW(iflush2, XFS_ERRTAG_IFLUSH_2);
-XFS_ERRORTAG_ATTR_RW(iflush3, XFS_ERRTAG_IFLUSH_3);
-XFS_ERRORTAG_ATTR_RW(iflush4, XFS_ERRTAG_IFLUSH_4);
-XFS_ERRORTAG_ATTR_RW(iflush5, XFS_ERRTAG_IFLUSH_5);
-XFS_ERRORTAG_ATTR_RW(iflush6, XFS_ERRTAG_IFLUSH_6);
-XFS_ERRORTAG_ATTR_RW(dareadbuf, XFS_ERRTAG_DA_READ_BUF);
-XFS_ERRORTAG_ATTR_RW(btree_chk_lblk, XFS_ERRTAG_BTREE_CHECK_LBLOCK);
-XFS_ERRORTAG_ATTR_RW(btree_chk_sblk, XFS_ERRTAG_BTREE_CHECK_SBLOCK);
-XFS_ERRORTAG_ATTR_RW(readagf, XFS_ERRTAG_ALLOC_READ_AGF);
-XFS_ERRORTAG_ATTR_RW(readagi, XFS_ERRTAG_IALLOC_READ_AGI);
-XFS_ERRORTAG_ATTR_RW(itobp, XFS_ERRTAG_ITOBP_INOTOBP);
-XFS_ERRORTAG_ATTR_RW(iunlink, XFS_ERRTAG_IUNLINK);
-XFS_ERRORTAG_ATTR_RW(iunlinkrm, XFS_ERRTAG_IUNLINK_REMOVE);
-XFS_ERRORTAG_ATTR_RW(dirinovalid, XFS_ERRTAG_DIR_INO_VALIDATE);
-XFS_ERRORTAG_ATTR_RW(bulkstat, XFS_ERRTAG_BULKSTAT_READ_CHUNK);
-XFS_ERRORTAG_ATTR_RW(logiodone, XFS_ERRTAG_IODONE_IOERR);
-XFS_ERRORTAG_ATTR_RW(stratread, XFS_ERRTAG_STRATREAD_IOERR);
-XFS_ERRORTAG_ATTR_RW(stratcmpl, XFS_ERRTAG_STRATCMPL_IOERR);
-XFS_ERRORTAG_ATTR_RW(diowrite, XFS_ERRTAG_DIOWRITE_IOERR);
-XFS_ERRORTAG_ATTR_RW(bmapifmt, XFS_ERRTAG_BMAPIFORMAT);
-XFS_ERRORTAG_ATTR_RW(free_extent, XFS_ERRTAG_FREE_EXTENT);
-XFS_ERRORTAG_ATTR_RW(rmap_finish_one, XFS_ERRTAG_RMAP_FINISH_ONE);
-XFS_ERRORTAG_ATTR_RW(refcount_continue_update, XFS_ERRTAG_REFCOUNT_CONTINUE_UPDATE);
-XFS_ERRORTAG_ATTR_RW(refcount_finish_one, XFS_ERRTAG_REFCOUNT_FINISH_ONE);
-XFS_ERRORTAG_ATTR_RW(bmap_finish_one, XFS_ERRTAG_BMAP_FINISH_ONE);
-XFS_ERRORTAG_ATTR_RW(ag_resv_critical, XFS_ERRTAG_AG_RESV_CRITICAL);
-XFS_ERRORTAG_ATTR_RW(log_bad_crc, XFS_ERRTAG_LOG_BAD_CRC);
-XFS_ERRORTAG_ATTR_RW(log_item_pin, XFS_ERRTAG_LOG_ITEM_PIN);
-XFS_ERRORTAG_ATTR_RW(buf_lru_ref, XFS_ERRTAG_BUF_LRU_REF);
-XFS_ERRORTAG_ATTR_RW(force_repair, XFS_ERRTAG_FORCE_SCRUB_REPAIR);
-XFS_ERRORTAG_ATTR_RW(bad_summary, XFS_ERRTAG_FORCE_SUMMARY_RECALC);
-XFS_ERRORTAG_ATTR_RW(iunlink_fallback, XFS_ERRTAG_IUNLINK_FALLBACK);
-XFS_ERRORTAG_ATTR_RW(buf_ioerror, XFS_ERRTAG_BUF_IOERROR);
-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);
-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);
-XFS_ERRORTAG_ATTR_RW(metafile_resv_crit, XFS_ERRTAG_METAFILE_RESV_CRITICAL);
+ .tag = XFS_ERRTAG_##_tag, \
+};
+#include "xfs_errortag.h"
+XFS_ERRTAGS
+#undef XFS_ERRTAG
+#define XFS_ERRTAG(_tag, _name, _default) \
+ &xfs_errortag_attr_##_name.attr,
+#include "xfs_errortag.h"
static struct attribute *xfs_errortag_attrs[] = {
- XFS_ERRORTAG_ATTR_LIST(noerror),
- XFS_ERRORTAG_ATTR_LIST(iflush1),
- XFS_ERRORTAG_ATTR_LIST(iflush2),
- XFS_ERRORTAG_ATTR_LIST(iflush3),
- XFS_ERRORTAG_ATTR_LIST(iflush4),
- XFS_ERRORTAG_ATTR_LIST(iflush5),
- XFS_ERRORTAG_ATTR_LIST(iflush6),
- XFS_ERRORTAG_ATTR_LIST(dareadbuf),
- XFS_ERRORTAG_ATTR_LIST(btree_chk_lblk),
- XFS_ERRORTAG_ATTR_LIST(btree_chk_sblk),
- XFS_ERRORTAG_ATTR_LIST(readagf),
- XFS_ERRORTAG_ATTR_LIST(readagi),
- XFS_ERRORTAG_ATTR_LIST(itobp),
- XFS_ERRORTAG_ATTR_LIST(iunlink),
- XFS_ERRORTAG_ATTR_LIST(iunlinkrm),
- XFS_ERRORTAG_ATTR_LIST(dirinovalid),
- XFS_ERRORTAG_ATTR_LIST(bulkstat),
- XFS_ERRORTAG_ATTR_LIST(logiodone),
- XFS_ERRORTAG_ATTR_LIST(stratread),
- XFS_ERRORTAG_ATTR_LIST(stratcmpl),
- XFS_ERRORTAG_ATTR_LIST(diowrite),
- XFS_ERRORTAG_ATTR_LIST(bmapifmt),
- XFS_ERRORTAG_ATTR_LIST(free_extent),
- XFS_ERRORTAG_ATTR_LIST(rmap_finish_one),
- XFS_ERRORTAG_ATTR_LIST(refcount_continue_update),
- XFS_ERRORTAG_ATTR_LIST(refcount_finish_one),
- XFS_ERRORTAG_ATTR_LIST(bmap_finish_one),
- XFS_ERRORTAG_ATTR_LIST(ag_resv_critical),
- XFS_ERRORTAG_ATTR_LIST(log_bad_crc),
- XFS_ERRORTAG_ATTR_LIST(log_item_pin),
- XFS_ERRORTAG_ATTR_LIST(buf_lru_ref),
- XFS_ERRORTAG_ATTR_LIST(force_repair),
- XFS_ERRORTAG_ATTR_LIST(bad_summary),
- XFS_ERRORTAG_ATTR_LIST(iunlink_fallback),
- XFS_ERRORTAG_ATTR_LIST(buf_ioerror),
- XFS_ERRORTAG_ATTR_LIST(reduce_max_iextents),
- 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),
- 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),
- XFS_ERRORTAG_ATTR_LIST(metafile_resv_crit),
- NULL,
+ XFS_ERRTAGS
+ NULL
};
ATTRIBUTE_GROUPS(xfs_errortag);
+#undef XFS_ERRTAG
+
+/* -1 because XFS_ERRTAG_DROP_WRITES got removed, + 1 for NULL termination */
+static_assert(ARRAY_SIZE(xfs_errortag_attrs) == XFS_ERRTAG_MAX);
static const struct kobj_type xfs_errortag_ktype = {
.release = xfs_sysfs_release,
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