Perform simple tests of the realtime bitmap and summary.
Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
---
fs/xfs/Makefile | 5 ++
fs/xfs/libxfs/xfs_format.h | 5 ++
fs/xfs/libxfs/xfs_fs.h | 4 +
fs/xfs/libxfs/xfs_rtbitmap.c | 2 -
fs/xfs/repair/agheader.c | 1
fs/xfs/repair/common.c | 7 ++
fs/xfs/repair/common.h | 6 ++
fs/xfs/repair/rtbitmap.c | 131 ++++++++++++++++++++++++++++++++++++++++++
fs/xfs/xfs_rtalloc.h | 3 +
fs/xfs/xfs_trace.h | 4 +
10 files changed, 165 insertions(+), 3 deletions(-)
create mode 100644 fs/xfs/repair/rtbitmap.c
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index bdab112..7cee02a 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -117,6 +117,11 @@ xfs-$(CONFIG_XFS_DEBUG) += $(addprefix repair/, \
rmap.o \
symlink.o \
)
+ifeq ($(CONFIG_XFS_DEBUG)$(CONFIG_XFS_RT),yy)
+xfs-$(CONFIG_XFS_DEBUG) += $(addprefix repair/, \
+ rtbitmap.o \
+ )
+endif
# low-level transaction/log code
xfs-y += xfs_log.o \
diff --git a/fs/xfs/libxfs/xfs_format.h b/fs/xfs/libxfs/xfs_format.h
index 301effc..cb00017 100644
--- a/fs/xfs/libxfs/xfs_format.h
+++ b/fs/xfs/libxfs/xfs_format.h
@@ -315,6 +315,11 @@ static inline bool xfs_sb_good_version(struct xfs_sb *sbp)
return false;
}
+static inline bool xfs_sb_version_hasrealtime(struct xfs_sb *sbp)
+{
+ return sbp->sb_rblocks > 0;
+}
+
/*
* Detect a mismatched features2 field. Older kernels read/wrote
* this into the wrong slot, so to be safe we keep them in sync.
diff --git a/fs/xfs/libxfs/xfs_fs.h b/fs/xfs/libxfs/xfs_fs.h
index 023a842..5cc8462 100644
--- a/fs/xfs/libxfs/xfs_fs.h
+++ b/fs/xfs/libxfs/xfs_fs.h
@@ -592,7 +592,9 @@ struct xfs_scrub_metadata {
#define XFS_SCRUB_TYPE_DIR 15 /* directory */
#define XFS_SCRUB_TYPE_XATTR 16 /* extended attribute */
#define XFS_SCRUB_TYPE_SYMLINK 17 /* symbolic link */
-#define XFS_SCRUB_TYPE_MAX 17
+#define XFS_SCRUB_TYPE_RTBITMAP 18 /* realtime bitmap */
+#define XFS_SCRUB_TYPE_RTSUM 19 /* realtime summary */
+#define XFS_SCRUB_TYPE_MAX 19
#define XFS_SCRUB_FLAG_REPAIR 0x1 /* i: repair this metadata */
#define XFS_SCRUB_FLAG_CORRUPT 0x2 /* o: needs repair */
diff --git a/fs/xfs/libxfs/xfs_rtbitmap.c b/fs/xfs/libxfs/xfs_rtbitmap.c
index ea45584..f4b68c0 100644
--- a/fs/xfs/libxfs/xfs_rtbitmap.c
+++ b/fs/xfs/libxfs/xfs_rtbitmap.c
@@ -70,7 +70,7 @@ const struct xfs_buf_ops xfs_rtbuf_ops = {
* Get a buffer for the bitmap or summary file block specified.
* The buffer is returned read and locked.
*/
-static int
+int
xfs_rtbuf_get(
xfs_mount_t *mp, /* file system mount structure */
xfs_trans_t *tp, /* transaction pointer */
diff --git a/fs/xfs/repair/agheader.c b/fs/xfs/repair/agheader.c
index 3623f4c..8812b64 100644
--- a/fs/xfs/repair/agheader.c
+++ b/fs/xfs/repair/agheader.c
@@ -248,6 +248,7 @@ xfs_scrub_superblock(
XFS_SCRUB_SB_FEAT(metauuid);
XFS_SCRUB_SB_FEAT(rmapbt);
XFS_SCRUB_SB_FEAT(reflink);
+ XFS_SCRUB_SB_FEAT(realtime);
#undef XFS_SCRUB_SB_FEAT
out:
diff --git a/fs/xfs/repair/common.c b/fs/xfs/repair/common.c
index 636bceed..6adccb5 100644
--- a/fs/xfs/repair/common.c
+++ b/fs/xfs/repair/common.c
@@ -688,6 +688,13 @@ static const struct xfs_scrub_meta_fns meta_scrub_fns[] = {
{xfs_scrub_setup_inode, xfs_scrub_directory, NULL, NULL},
{xfs_scrub_setup_inode_xattr, xfs_scrub_xattr, NULL, NULL},
{xfs_scrub_setup_inode_symlink, xfs_scrub_symlink, NULL, NULL},
+#ifdef CONFIG_XFS_RT
+ {xfs_scrub_setup_rt, xfs_scrub_rtbitmap, NULL, xfs_sb_version_hasrealtime},
+ {xfs_scrub_setup_rt, xfs_scrub_rtsummary, NULL, xfs_sb_version_hasrealtime},
+#else
+ {NULL, NULL, NULL, NULL},
+ {NULL, NULL, NULL, NULL},
+#endif
};
/* Dispatch metadata scrubbing. */
diff --git a/fs/xfs/repair/common.h b/fs/xfs/repair/common.h
index 123dc1d..8dc68b9 100644
--- a/fs/xfs/repair/common.h
+++ b/fs/xfs/repair/common.h
@@ -235,6 +235,10 @@ int xfs_scrub_setup_inode_symlink(struct xfs_scrub_context *sc,
struct xfs_inode *ip,
struct xfs_scrub_metadata *sm,
bool retry_deadlocked);
+int xfs_scrub_setup_rt(struct xfs_scrub_context *sc,
+ struct xfs_inode *ip,
+ struct xfs_scrub_metadata *sm,
+ bool retry_deadlocked);
/* Metadata scrubbers */
@@ -255,5 +259,7 @@ int xfs_scrub_bmap_cow(struct xfs_scrub_context *sc);
int xfs_scrub_directory(struct xfs_scrub_context *sc);
int xfs_scrub_xattr(struct xfs_scrub_context *sc);
int xfs_scrub_symlink(struct xfs_scrub_context *sc);
+int xfs_scrub_rtbitmap(struct xfs_scrub_context *sc);
+int xfs_scrub_rtsummary(struct xfs_scrub_context *sc);
#endif /* __XFS_REPAIR_COMMON_H__ */
diff --git a/fs/xfs/repair/rtbitmap.c b/fs/xfs/repair/rtbitmap.c
new file mode 100644
index 0000000..6492e35
--- /dev/null
+++ b/fs/xfs/repair/rtbitmap.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2017 Oracle. All Rights Reserved.
+ *
+ * Author: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it would be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+#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_trace.h"
+#include "xfs_sb.h"
+#include "xfs_alloc.h"
+#include "xfs_rtalloc.h"
+#include "xfs_inode.h"
+#include "repair/common.h"
+
+/* Set us up with the realtime metadata locked. */
+int
+xfs_scrub_setup_rt(
+ struct xfs_scrub_context *sc,
+ struct xfs_inode *ip,
+ struct xfs_scrub_metadata *sm,
+ bool retry_deadlocked)
+{
+ struct xfs_mount *mp = ip->i_mount;
+ int lockmode;
+ int error = 0;
+
+ if (sm->sm_agno || sm->sm_ino || sm->sm_gen)
+ return -EINVAL;
+
+ error = xfs_scrub_setup(sc, ip, sm, retry_deadlocked);
+ if (error)
+ return error;
+
+ 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 bitmap. */
+
+#define XFS_SCRUB_RTBITMAP_CHECK(fs_ok) \
+ XFS_SCRUB_CHECK(sc, bp, "rtbitmap", fs_ok);
+#define XFS_SCRUB_RTBITMAP_OP_ERROR_GOTO(error, label) \
+ XFS_SCRUB_OP_ERROR_GOTO(sc, 0, 0, "rtbitmap", error, label)
+/* Scrub the realtime bitmap. */
+int
+xfs_scrub_rtbitmap(
+ struct xfs_scrub_context *sc)
+{
+ struct xfs_mount *mp = sc->tp->t_mountp;
+ struct xfs_buf *bp = NULL;
+ xfs_rtblock_t rtstart;
+ xfs_rtblock_t rtend = 0;
+ xfs_rtblock_t block;
+ xfs_rtblock_t rem;
+ int is_free = 0;
+ int error = 0;
+ int err2 = 0;
+
+ /* Iterate the bitmap, looking for discrepancies. */
+ rtstart = 0;
+ rem = mp->m_sb.sb_rblocks;
+ while (rem) {
+ if (xfs_scrub_should_terminate(&error))
+ break;
+
+ /* Is the first block free? */
+ err2 = xfs_rtcheck_range(mp, sc->tp, rtstart, 1, 1, &rtend,
+ &is_free);
+ XFS_SCRUB_RTBITMAP_OP_ERROR_GOTO(&err2, out);
+
+ /* How long does the extent go for? */
+ err2 = xfs_rtfind_forw(mp, sc->tp, rtstart,
+ mp->m_sb.sb_rblocks - 1, &rtend);
+ XFS_SCRUB_RTBITMAP_OP_ERROR_GOTO(&err2, out);
+
+ /* Find the buffer for error reporting. */
+ block = XFS_BITTOBLOCK(mp, rtstart);
+ err2 = xfs_rtbuf_get(mp, sc->tp, block, 0, &bp);
+ XFS_SCRUB_RTBITMAP_OP_ERROR_GOTO(&err2, out);
+ XFS_SCRUB_RTBITMAP_CHECK(rtend >= rtstart);
+
+ xfs_trans_brelse(sc->tp, bp);
+ bp = NULL;
+ rem -= rtend - rtstart + 1;
+ rtstart = rtend + 1;
+ }
+
+out:
+ if (bp)
+ xfs_trans_brelse(sc->tp, bp);
+ if (!error && err2)
+ error = err2;
+ return error;
+}
+#undef XFS_SCRUB_RTBITMAP_OP_ERROR_GOTO
+#undef XFS_SCRUB_RTBITMAP_CHECK
+
+/* Scrub the realtime summary. */
+int
+xfs_scrub_rtsummary(
+ struct xfs_scrub_context *sc)
+{
+ /* XXX: implement this some day */
+ return -ENOENT;
+}
diff --git a/fs/xfs/xfs_rtalloc.h b/fs/xfs/xfs_rtalloc.h
index f798a3e..3036349 100644
--- a/fs/xfs/xfs_rtalloc.h
+++ b/fs/xfs/xfs_rtalloc.h
@@ -98,6 +98,8 @@ xfs_growfs_rt(
/*
* From xfs_rtbitmap.c
*/
+int xfs_rtbuf_get(struct xfs_mount *mp, struct xfs_trans *tp,
+ xfs_rtblock_t block, int issum, struct xfs_buf **bpp);
int xfs_rtcheck_range(struct xfs_mount *mp, struct xfs_trans *tp,
xfs_rtblock_t start, xfs_extlen_t len, int val,
xfs_rtblock_t *new, int *stat);
@@ -128,6 +130,7 @@ int xfs_rtfree_range(struct xfs_mount *mp, struct xfs_trans *tp,
# define xfs_growfs_rt(mp,in) (ENOSYS)
# define xfs_rtcheck_range(...) (ENOSYS)
# define xfs_rtfind_forw(...) (ENOSYS)
+# define xfs_rtbuf_get(m,t,b,i,p) (ENOSYS)
static inline int /* error */
xfs_rtmount_init(
xfs_mount_t *mp) /* file system mount structure */
diff --git a/fs/xfs/xfs_trace.h b/fs/xfs/xfs_trace.h
index 87fd942..c52e3a5 100644
--- a/fs/xfs/xfs_trace.h
+++ b/fs/xfs/xfs_trace.h
@@ -3370,7 +3370,9 @@ DEFINE_GETFSMAP_EVENT(xfs_getfsmap_mapping);
{ XFS_SCRUB_TYPE_BMBTC, "bmapbtc" }, \
{ XFS_SCRUB_TYPE_DIR, "dir" }, \
{ XFS_SCRUB_TYPE_XATTR, "xattr" }, \
- { XFS_SCRUB_TYPE_SYMLINK, "symlink" }
+ { XFS_SCRUB_TYPE_SYMLINK, "symlink" }, \
+ { XFS_SCRUB_TYPE_RTBITMAP, "rtbitmap" }, \
+ { XFS_SCRUB_TYPE_RTSUM, "rtsummary" }
DECLARE_EVENT_CLASS(xfs_scrub_class,
TP_PROTO(struct xfs_inode *ip, int type, xfs_agnumber_t agno,
xfs_ino_t inum, unsigned int gen, unsigned int flags,
--
To unsubscribe from this list: send the line "unsubscribe linux-xfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
