[PATCH 2/9] xfs: report ag header corruption errors to the health tracking system

Darrick J. Wong
2019-11-14T18:20:02Z

From: Darrick J. Wong <darrick.wong@oracle.com>

Whenever we encounter a corrupt AG header, we should report that to the
health monitoring system for later reporting.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/xfs/libxfs/xfs_alloc.c | 6 ++++++
fs/xfs/libxfs/xfs_health.h | 6 ++++++
fs/xfs/libxfs/xfs_ialloc.c | 3 +++
fs/xfs/libxfs/xfs_refcount.c | 5 ++++-
fs/xfs/libxfs/xfs_rmap.c | 5 ++++-
fs/xfs/libxfs/xfs_sb.c | 2 ++
fs/xfs/xfs_health.c | 17 +++++++++++++++++
fs/xfs/xfs_inode.c | 9 +++++++++
8 files changed, 51 insertions(+), 2 deletions(-)

diff --git a/fs/xfs/libxfs/xfs_alloc.c b/fs/xfs/libxfs/xfs_alloc.c
index c284e10af491..e75e3ae6c912 100644
--- a/fs/xfs/libxfs/xfs_alloc.c
+++ b/fs/xfs/libxfs/xfs_alloc.c
@@ -26,6 +26,7 @@
#include "xfs_log.h"
#include "xfs_ag_resv.h"
#include "xfs_bmap.h"
+#include "xfs_health.h"

extern kmem_zone_t *xfs_bmap_free_item_zone;

@@ -699,6 +700,8 @@ xfs_alloc_read_agfl(
mp, tp, mp->m_ddev_targp,
XFS_AG_DADDR(mp, agno, XFS_AGFL_DADDR(mp)),
XFS_FSS_TO_BB(mp, 1), 0, &bp, &xfs_agfl_buf_ops);
+ if (xfs_metadata_is_sick(error))
+ xfs_agno_mark_sick(mp, agno, XFS_SICK_AG_AGFL);
if (error)
return error;
xfs_buf_set_ref(bp, XFS_AGFL_REF);
@@ -722,6 +725,7 @@ xfs_alloc_update_counters(
if (unlikely(be32_to_cpu(agf->agf_freeblks) >
be32_to_cpu(agf->agf_length))) {
xfs_buf_corruption_error(agbp);
+ xfs_ag_mark_sick(pag, XFS_SICK_AG_AGF);
return -EFSCORRUPTED;
}

@@ -2952,6 +2956,8 @@ xfs_read_agf(
mp, tp, mp->m_ddev_targp,
XFS_AG_DADDR(mp, agno, XFS_AGF_DADDR(mp)),
XFS_FSS_TO_BB(mp, 1), flags, bpp, &xfs_agf_buf_ops);
+ if (xfs_metadata_is_sick(error))
+ xfs_agno_mark_sick(mp, agno, XFS_SICK_AG_AGF);
if (error)
return error;
if (!*bpp)
diff --git a/fs/xfs/libxfs/xfs_health.h b/fs/xfs/libxfs/xfs_health.h
index 3657a9cb8490..ce8954a10c66 100644
--- a/fs/xfs/libxfs/xfs_health.h
+++ b/fs/xfs/libxfs/xfs_health.h
@@ -123,6 +123,8 @@ void xfs_rt_mark_healthy(struct xfs_mount *mp, unsigned int mask);
void xfs_rt_measure_sickness(struct xfs_mount *mp, unsigned int *sick,
unsigned int *checked);

+void xfs_agno_mark_sick(struct xfs_mount *mp, xfs_agnumber_t agno,
+ unsigned int mask);
void xfs_ag_mark_sick(struct xfs_perag *pag, unsigned int mask);
void xfs_ag_mark_checked(struct xfs_perag *pag, unsigned int mask);
void xfs_ag_mark_healthy(struct xfs_perag *pag, unsigned int mask);
@@ -203,4 +205,8 @@ void xfs_fsop_geom_health(struct xfs_mount *mp, struct xfs_fsop_geom *geo);
void xfs_ag_geom_health(struct xfs_perag *pag, struct xfs_ag_geometry *ageo);
void xfs_bulkstat_health(struct xfs_inode *ip, struct xfs_bulkstat *bs);

+#define xfs_metadata_is_sick(error) \
+ (unlikely((error) == -EFSCORRUPTED || (error) == -EIO || \
+ (error) == -EFSBADCRC))
+
#endif /* __XFS_HEALTH_H__ */
diff --git a/fs/xfs/libxfs/xfs_ialloc.c b/fs/xfs/libxfs/xfs_ialloc.c
index 988cde7744e6..c401512a4350 100644
--- a/fs/xfs/libxfs/xfs_ialloc.c
+++ b/fs/xfs/libxfs/xfs_ialloc.c
@@ -27,6 +27,7 @@
#include "xfs_trace.h"
#include "xfs_log.h"
#include "xfs_rmap.h"
+#include "xfs_health.h"

/*
* Lookup a record by ino in the btree given by cur.
@@ -2635,6 +2636,8 @@ xfs_read_agi(
error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp,
XFS_AG_DADDR(mp, agno, XFS_AGI_DADDR(mp)),
XFS_FSS_TO_BB(mp, 1), 0, bpp, &xfs_agi_buf_ops);
+ if (xfs_metadata_is_sick(error))
+ xfs_agno_mark_sick(mp, agno, XFS_SICK_AG_AGI);
if (error)
return error;
if (tp)
diff --git a/fs/xfs/libxfs/xfs_refcount.c b/fs/xfs/libxfs/xfs_refcount.c
index d7d702ee4d1a..25c87834e42a 100644
--- a/fs/xfs/libxfs/xfs_refcount.c
+++ b/fs/xfs/libxfs/xfs_refcount.c
@@ -22,6 +22,7 @@
#include "xfs_bit.h"
#include "xfs_refcount.h"
#include "xfs_rmap.h"
+#include "xfs_health.h"

/* Allowable refcount adjustment amounts. */
enum xfs_refc_adjust_op {
@@ -1177,8 +1178,10 @@ xfs_refcount_finish_one(
XFS_ALLOC_FLAG_FREEING, &agbp);
if (error)
return error;
- if (XFS_IS_CORRUPT(tp->t_mountp, !agbp))
+ if (XFS_IS_CORRUPT(tp->t_mountp, !agbp)) {
+ xfs_agno_mark_sick(tp->t_mountp, agno, XFS_SICK_AG_AGF);
return -EFSCORRUPTED;
+ }

rcur = xfs_refcountbt_init_cursor(mp, tp, agbp, agno);
if (!rcur) {
diff --git a/fs/xfs/libxfs/xfs_rmap.c b/fs/xfs/libxfs/xfs_rmap.c
index ff9412f113c4..a54a3c129cce 100644
--- a/fs/xfs/libxfs/xfs_rmap.c
+++ b/fs/xfs/libxfs/xfs_rmap.c
@@ -21,6 +21,7 @@
#include "xfs_errortag.h"
#include "xfs_error.h"
#include "xfs_inode.h"
+#include "xfs_health.h"

/*
* Lookup the first record less than or equal to [bno, len, owner, offset]
@@ -2400,8 +2401,10 @@ xfs_rmap_finish_one(
error = xfs_free_extent_fix_freelist(tp, agno, &agbp);
if (error)
return error;
- if (XFS_IS_CORRUPT(tp->t_mountp, !agbp))
+ if (XFS_IS_CORRUPT(tp->t_mountp, !agbp)) {
+ xfs_agno_mark_sick(tp->t_mountp, agno, XFS_SICK_AG_AGF);
return -EFSCORRUPTED;
+ }

rcur = xfs_rmapbt_init_cursor(mp, tp, agbp, agno);
if (!rcur) {
diff --git a/fs/xfs/libxfs/xfs_sb.c b/fs/xfs/libxfs/xfs_sb.c
index 0ac69751fe85..4a923545465d 100644
--- a/fs/xfs/libxfs/xfs_sb.c
+++ b/fs/xfs/libxfs/xfs_sb.c
@@ -1169,6 +1169,8 @@ xfs_sb_read_secondary(
error = xfs_trans_read_buf(mp, tp, mp->m_ddev_targp,
XFS_AG_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
XFS_FSS_TO_BB(mp, 1), 0, &bp, &xfs_sb_buf_ops);
+ if (xfs_metadata_is_sick(error))
+ xfs_agno_mark_sick(mp, agno, XFS_SICK_AG_SB);
if (error)
return error;
xfs_buf_set_ref(bp, XFS_SSB_REF);
diff --git a/fs/xfs/xfs_health.c b/fs/xfs/xfs_health.c
index 860dc70c99e7..36c32b108b39 100644
--- a/fs/xfs/xfs_health.c
+++ b/fs/xfs/xfs_health.c
@@ -200,6 +200,23 @@ xfs_rt_measure_sickness(
spin_unlock(&mp->m_sb_lock);
}

+/* Mark unhealthy per-ag metadata given a raw AG number. */
+void
+xfs_agno_mark_sick(
+ struct xfs_mount *mp,
+ xfs_agnumber_t agno,
+ unsigned int mask)
+{
+ struct xfs_perag *pag = xfs_perag_get(mp, agno);
+
+ /* per-ag structure not set up yet? */
+ if (!pag)
+ return;
+
+ xfs_ag_mark_sick(pag, mask);
+ xfs_perag_put(pag);
+}
+
/* Mark unhealthy per-ag metadata. */
void
xfs_ag_mark_sick(
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 401da197f012..a2812cea748d 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -35,6 +35,7 @@
#include "xfs_log.h"
#include "xfs_bmap_btree.h"
#include "xfs_reflink.h"
+#include "xfs_health.h"

kmem_zone_t *xfs_inode_zone;

@@ -787,6 +788,8 @@ xfs_ialloc(
*/
if ((pip && ino == pip->i_ino) || !xfs_verify_dir_ino(mp, ino)) {
xfs_alert(mp, "Allocated a known in-use inode 0x%llx!", ino);
+ xfs_agno_mark_sick(mp, XFS_INO_TO_AGNO(mp, ino),
+ XFS_SICK_AG_INOBT);
return -EFSCORRUPTED;
}

@@ -2137,6 +2140,7 @@ xfs_iunlink_update_bucket(
*/
if (old_value == new_agino) {
xfs_buf_corruption_error(agibp);
+ xfs_agno_mark_sick(tp->t_mountp, agno, XFS_SICK_AG_AGI);
return -EFSCORRUPTED;
}

@@ -2203,6 +2207,7 @@ xfs_iunlink_update_inode(
if (!xfs_verify_agino_or_null(mp, agno, old_value)) {
xfs_inode_verifier_error(ip, -EFSCORRUPTED, __func__, dip,
sizeof(*dip), __this_address);
+ xfs_inode_mark_sick(ip, XFS_SICK_INO_CORE);
error = -EFSCORRUPTED;
goto out;
}
@@ -2217,6 +2222,7 @@ xfs_iunlink_update_inode(
if (next_agino != NULLAGINO) {
xfs_inode_verifier_error(ip, -EFSCORRUPTED, __func__,
dip, sizeof(*dip), __this_address);
+ xfs_inode_mark_sick(ip, XFS_SICK_INO_CORE);
error = -EFSCORRUPTED;
}
goto out;
@@ -2271,6 +2277,7 @@ xfs_iunlink(
if (next_agino == agino ||
!xfs_verify_agino_or_null(mp, agno, next_agino)) {
xfs_buf_corruption_error(agibp);
+ xfs_agno_mark_sick(mp, agno, XFS_SICK_AG_AGI);
return -EFSCORRUPTED;
}

@@ -2408,6 +2415,7 @@ xfs_iunlink_map_prev(
XFS_CORRUPTION_ERROR(__func__,
XFS_ERRLEVEL_LOW, mp,
*dipp, sizeof(**dipp));
+ xfs_ag_mark_sick(pag, XFS_SICK_AG_AGI);
error = -EFSCORRUPTED;
return error;
}
@@ -2454,6 +2462,7 @@ xfs_iunlink_remove(
if (!xfs_verify_agino(mp, agno, head_agino)) {
XFS_CORRUPTION_ERROR(__func__, XFS_ERRLEVEL_LOW, mp,
agi, sizeof(*agi));
+ xfs_agno_mark_sick(mp, agno, XFS_SICK_AG_AGI);
return -EFSCORRUPTED;
}