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xfs: add trace point for fs shutdown 

Add a tracepoint for fs shutdowns so we can capture that in ftrace
output.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Darrick J. Wong 2021-08-10 17:00:54 -07:00
parent 54406764c6
commit 7f89c83839
5 changed files with 49 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
fs/xfs/xfs_error.h
View File

@ -75,4 +75,16 @@ extern int xfs_errortag_clearall(struct xfs_mount *mp);
#define XFS_PTAG_FSBLOCK_ZERO 0x00000080
#define XFS_PTAG_VERIFIER_ERROR 0x00000100
#define XFS_PTAG_STRINGS \
{ XFS_NO_PTAG, "none" }, \
{ XFS_PTAG_IFLUSH, "iflush" }, \
{ XFS_PTAG_LOGRES, "logres" }, \
{ XFS_PTAG_AILDELETE, "aildelete" }, \
{ XFS_PTAG_ERROR_REPORT , "error_report" }, \
{ XFS_PTAG_SHUTDOWN_CORRUPT, "corrupt" }, \
{ XFS_PTAG_SHUTDOWN_IOERROR, "ioerror" }, \
{ XFS_PTAG_SHUTDOWN_LOGERROR, "logerror" }, \
{ XFS_PTAG_FSBLOCK_ZERO, "fsb_zero" }, \
{ XFS_PTAG_VERIFIER_ERROR, "verifier" }
#endif /* __XFS_ERROR_H__ */

3
fs/xfs/xfs_fsops.c
View File

@ -19,6 +19,7 @@
#include "xfs_log.h"
#include "xfs_ag.h"
#include "xfs_ag_resv.h"
#include "xfs_trace.h"
/*
* Write new AG headers to disk. Non-transactional, but need to be
@ -551,6 +552,8 @@ xfs_do_force_shutdown(
why = "Metadata I/O Error";
}
trace_xfs_force_shutdown(mp, tag, flags, fname, lnnum);
xfs_alert_tag(mp, tag,
"%s (0x%x) detected at %pS (%s:%d). Shutting down filesystem.",
why, flags, __return_address, fname, lnnum);

6
fs/xfs/xfs_mount.h
View File

@ -331,6 +331,12 @@ void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
#define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */
#define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */
#define XFS_SHUTDOWN_STRINGS \
{ SHUTDOWN_META_IO_ERROR, "metadata_io" }, \
{ SHUTDOWN_LOG_IO_ERROR, "log_io" }, \
{ SHUTDOWN_FORCE_UMOUNT, "force_umount" }, \
{ SHUTDOWN_CORRUPT_INCORE, "corruption" }
/*
* Flags for xfs_mountfs
*/

1
fs/xfs/xfs_trace.c
View File

@ -33,6 +33,7 @@
#include "xfs_icache.h"
#include "xfs_ag.h"
#include "xfs_ag_resv.h"
#include "xfs_error.h"
/*
* We include this last to have the helpers above available for the trace

27
fs/xfs/xfs_trace.h
View File

@ -4096,6 +4096,33 @@ DEFINE_DAS_STATE_EVENT(xfs_attr_set_iter_return);
DEFINE_DAS_STATE_EVENT(xfs_attr_node_addname_return);
DEFINE_DAS_STATE_EVENT(xfs_attr_remove_iter_return);
DEFINE_DAS_STATE_EVENT(xfs_attr_rmtval_remove_return);
TRACE_EVENT(xfs_force_shutdown,
TP_PROTO(struct xfs_mount *mp, int ptag, int flags, const char *fname,
int line_num),
TP_ARGS(mp, ptag, flags, fname, line_num),
TP_STRUCT__entry(
__field(dev_t, dev)
__field(int, ptag)
__field(int, flags)
__string(fname, fname)
__field(int, line_num)
),
TP_fast_assign(
__entry->dev = mp->m_super->s_dev;
__entry->ptag = ptag;
__entry->flags = flags;
__assign_str(fname, fname);
__entry->line_num = line_num;
),
TP_printk("dev %d:%d tag %s flags %s file %s line_num %d",
MAJOR(__entry->dev), MINOR(__entry->dev),
__print_flags(__entry->ptag, "|", XFS_PTAG_STRINGS),
__print_flags(__entry->flags, "|", XFS_SHUTDOWN_STRINGS),
__get_str(fname),
__entry->line_num)
);
#endif /* _TRACE_XFS_H */
#undef TRACE_INCLUDE_PATH