From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
Check the realtime reverse mapping btree against the rtbitmap, and
modify the rtbitmap scrub to check against the rtrmapbt.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
fs/xfs/Makefile | 5 ++
fs/xfs/libxfs/xfs_fs.h | 3 +
fs/xfs/scrub/bmap.c | 1
fs/xfs/scrub/common.h | 6 +++
fs/xfs/scrub/rtrmap.c | 109 ++++++++++++++++++++++++++++++++++++++++++++++++
fs/xfs/scrub/scrub.c | 7 +++
fs/xfs/scrub/scrub.h | 6 +++
7 files changed, 135 insertions(+), 2 deletions(-)
create mode 100644 fs/xfs/scrub/rtrmap.c
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index c9b452646699..8aa72dc8be83 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -159,7 +159,10 @@ xfs-y += $(addprefix scrub/, \
symlink.o \
)
-xfs-$(CONFIG_XFS_RT) += scrub/rtbitmap.o
+xfs-$(CONFIG_XFS_RT) += $(addprefix scrub/, \
+ rtbitmap.o \
+ rtrmap.o \
+ )
xfs-$(CONFIG_XFS_QUOTA) += scrub/quota.o
# online repair
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index 0f0e2948866c..11d8217cf005 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -503,9 +503,10 @@ struct xfs_scrub_metadata {
#define XFS_SCRUB_TYPE_GQUOTA 22 /* group quotas */
#define XFS_SCRUB_TYPE_PQUOTA 23 /* project quotas */
#define XFS_SCRUB_TYPE_FSCOUNTERS 24 /* fs summary counters */
+#define XFS_SCRUB_TYPE_RTRMAPBT 25 /* realtime reverse mapping btree */
/* Number of scrub subcommands. */
-#define XFS_SCRUB_TYPE_NR 25
+#define XFS_SCRUB_TYPE_NR 26
/* i: Repair this metadata. */
#define XFS_SCRUB_IFLAG_REPAIR (1 << 0)
diff --git a/fs/xfs/scrub/bmap.c b/fs/xfs/scrub/bmap.c
index 6659f41e7b4c..b62845d016d2 100644
--- a/fs/xfs/scrub/bmap.c
+++ b/fs/xfs/scrub/bmap.c
@@ -648,6 +648,7 @@ xchk_bmap(
case XFS_DINODE_FMT_UUID:
case XFS_DINODE_FMT_DEV:
case XFS_DINODE_FMT_LOCAL:
+ case XFS_DINODE_FMT_RMAP:
/* No mappings to check. */
goto out;
case XFS_DINODE_FMT_EXTENTS:
diff --git a/fs/xfs/scrub/common.h b/fs/xfs/scrub/common.h
index 97da298abedd..6bccffddc832 100644
--- a/fs/xfs/scrub/common.h
+++ b/fs/xfs/scrub/common.h
@@ -89,12 +89,18 @@ int xchk_setup_parent(struct xfs_scrub *sc,
struct xfs_inode *ip);
#ifdef CONFIG_XFS_RT
int xchk_setup_rt(struct xfs_scrub *sc, struct xfs_inode *ip);
+int xchk_setup_rtrmapbt(struct xfs_scrub *sc, struct xfs_inode *ip);
#else
static inline int
xchk_setup_rt(struct xfs_scrub *sc, struct xfs_inode *ip)
{
return -ENOENT;
}
+static inline int
+xchk_setup_rtrmapbt(struct xfs_scrub *sc, struct xfs_inode *ip)
+{
+ return -ENOENT;
+}
#endif
#ifdef CONFIG_XFS_QUOTA
int xchk_setup_quota(struct xfs_scrub *sc, struct xfs_inode *ip);
diff --git a/fs/xfs/scrub/rtrmap.c b/fs/xfs/scrub/rtrmap.c
new file mode 100644
index 000000000000..6dde3c026918
--- /dev/null
+++ b/fs/xfs/scrub/rtrmap.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Oracle. All Rights Reserved.
+ * Author: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
+ */
+#include "xfs.h"
+#include "xfs_fs.h"
+#include "xfs_shared.h"
+#include "xfs_format.h"
+#include "xfs_trans_resv.h"
+#include "xfs_mount.h"
+#include "xfs_defer.h"
+#include "xfs_btree.h"
+#include "xfs_bit.h"
+#include "xfs_log_format.h"
+#include "xfs_trans.h"
+#include "xfs_sb.h"
+#include "xfs_rmap.h"
+#include "xfs_rmap_btree.h"
+#include "xfs_rtrmap_btree.h"
+#include "xfs_inode.h"
+#include "xfs_rtalloc.h"
+#include "scrub/xfs_scrub.h"
+#include "scrub/scrub.h"
+#include "scrub/common.h"
+#include "scrub/btree.h"
+#include "scrub/trace.h"
+
+/* Set us up with the realtime metadata and AG headers locked. */
+int
+xchk_setup_rtrmapbt(
+ struct xfs_scrub *sc,
+ struct xfs_inode *ip)
+{
+ struct xfs_mount *mp = sc->mp;
+ int lockmode;
+ int error = 0;
+
+ if (sc->sm->sm_agno || sc->sm->sm_ino || sc->sm->sm_gen)
+ return -EINVAL;
+
+ error = xchk_setup_fs(sc, ip);
+ if (error)
+ return error;
+
+ lockmode = XFS_ILOCK_EXCL;
+ xfs_ilock(mp->m_rrmapip, lockmode);
+ xfs_trans_ijoin(sc->tp, mp->m_rrmapip, lockmode);
+
+ lockmode = XFS_ILOCK_EXCL | XFS_ILOCK_RTBITMAP;
+ xfs_ilock(mp->m_rbmip, lockmode);
+ xfs_trans_ijoin(sc->tp, mp->m_rbmip, lockmode);
+
+ return 0;
+}
+
+/* Realtime reverse mapping. */
+
+/* Scrub a realtime rmapbt record. */
+STATIC int
+xchk_rtrmapbt_helper(
+ struct xchk_btree *bs,
+ union xfs_btree_rec *rec)
+{
+ struct xfs_mount *mp = bs->cur->bc_mp;
+ struct xfs_rmap_irec irec;
+ bool non_inode;
+ bool is_bmbt;
+ bool is_attr;
+ int error;
+
+ error = xfs_rmap_btrec_to_irec(bs->cur, rec, &irec);
+ if (!xchk_btree_process_error(bs->sc, bs->cur, 0, &error))
+ goto out;
+
+ if (irec.rm_startblock + irec.rm_blockcount <= irec.rm_startblock ||
+ (!xfs_verify_rtbno(mp, irec.rm_startblock) ||
+ !xfs_verify_rtbno(mp, irec.rm_startblock +
+ irec.rm_blockcount - 1)))
+ xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
+
+ non_inode = XFS_RMAP_NON_INODE_OWNER(irec.rm_owner);
+ is_bmbt = irec.rm_flags & XFS_RMAP_BMBT_BLOCK;
+ is_attr = irec.rm_flags & XFS_RMAP_ATTR_FORK;
+
+ if (is_bmbt || non_inode || is_attr)
+ xchk_btree_set_corrupt(bs->sc, bs->cur, 0);
+
+out:
+ return error;
+}
+
+/* Scrub the realtime rmap btree. */
+int
+xchk_rtrmapbt(
+ struct xfs_scrub *sc)
+{
+ struct xfs_owner_info oinfo;
+ struct xfs_mount *mp = sc->mp;
+ struct xfs_btree_cur *cur;
+ int error;
+
+ cur = xfs_rtrmapbt_init_cursor(mp, sc->tp, mp->m_rrmapip);
+ xfs_rmap_ino_bmbt_owner(&oinfo, mp->m_sb.sb_rrmapino, XFS_DATA_FORK);
+ error = xchk_btree(sc, cur, xchk_rtrmapbt_helper, &oinfo, NULL);
+ xfs_btree_del_cursor(cur, error);
+
+ return error;
+}
diff --git a/fs/xfs/scrub/scrub.c b/fs/xfs/scrub/scrub.c
index 047261cedd4b..b7910238d4a4 100644
--- a/fs/xfs/scrub/scrub.c
+++ b/fs/xfs/scrub/scrub.c
@@ -361,6 +361,13 @@ static const struct xchk_meta_ops meta_scrub_ops[] = {
.scrub = xchk_fscounters,
.repair = xrep_fscounters,
},
+ [XFS_SCRUB_TYPE_RTRMAPBT] = { /* realtime rmapbt */
+ .type = ST_FS,
+ .setup = xchk_setup_rtrmapbt,
+ .scrub = xchk_rtrmapbt,
+ .has = xfs_sb_version_hasrtrmapbt,
+ .repair = xrep_notsupported,
+ },
};
/* This isn't a stable feature, warn once per day. */
diff --git a/fs/xfs/scrub/scrub.h b/fs/xfs/scrub/scrub.h
index 1ce261f648f3..470785292b46 100644
--- a/fs/xfs/scrub/scrub.h
+++ b/fs/xfs/scrub/scrub.h
@@ -99,6 +99,7 @@ int xchk_parent(struct xfs_scrub *sc);
#ifdef CONFIG_XFS_RT
int xchk_rtbitmap(struct xfs_scrub *sc);
int xchk_rtsummary(struct xfs_scrub *sc);
+int xchk_rtrmapbt(struct xfs_scrub *sc);
#else
static inline int
xchk_rtbitmap(struct xfs_scrub *sc)
@@ -110,6 +111,11 @@ xchk_rtsummary(struct xfs_scrub *sc)
{
return -ENOENT;
}
+static inline int
+xchk_rtrmapbt(struct xfs_scrub *sc)
+{
+ return -ENOENT;
+}
#endif
#ifdef CONFIG_XFS_QUOTA
int xchk_quota(struct xfs_scrub *sc);
