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afs: Add a couple of tracepoints to log I/O errors

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Add a couple of tracepoints to log the production of I/O errors within the AFS
filesystem.

Signed-off-by: David Howells <dhowells@redhat.com>
This commit is contained in:
David Howells
2018-10-20 00:57:57 +01:00
parent 4ac15ea536
commit f51375cd9e
8 changed files with 114 additions and 16 deletions
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81
include/trace/events/afs.h
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@@ -103,6 +103,24 @@ enum afs_eproto_cause {
afs_eproto_yvl_vlendpt_type,
};
enum afs_io_error {
afs_io_error_cm_reply,
afs_io_error_extract,
afs_io_error_fs_probe_fail,
afs_io_error_vl_lookup_fail,
};
enum afs_file_error {
afs_file_error_dir_bad_magic,
afs_file_error_dir_big,
afs_file_error_dir_missing_page,
afs_file_error_dir_over_end,
afs_file_error_dir_small,
afs_file_error_dir_unmarked_ext,
afs_file_error_mntpt,
afs_file_error_writeback_fail,
};
#endif /* end __AFS_DECLARE_TRACE_ENUMS_ONCE_ONLY */
/*
@@ -183,6 +201,21 @@ enum afs_eproto_cause {
EM(afs_eproto_yvl_vlendpt6_len, "YVL.VlEnd6Len") \
E_(afs_eproto_yvl_vlendpt_type, "YVL.VlEndType")
#define afs_io_errors \
EM(afs_io_error_cm_reply, "CM_REPLY") \
EM(afs_io_error_extract, "EXTRACT") \
EM(afs_io_error_fs_probe_fail, "FS_PROBE_FAIL") \
E_(afs_io_error_vl_lookup_fail, "VL_LOOKUP_FAIL")
#define afs_file_errors \
EM(afs_file_error_dir_bad_magic, "DIR_BAD_MAGIC") \
EM(afs_file_error_dir_big, "DIR_BIG") \
EM(afs_file_error_dir_missing_page, "DIR_MISSING_PAGE") \
EM(afs_file_error_dir_over_end, "DIR_ENT_OVER_END") \
EM(afs_file_error_dir_small, "DIR_SMALL") \
EM(afs_file_error_dir_unmarked_ext, "DIR_UNMARKED_EXT") \
EM(afs_file_error_mntpt, "MNTPT_READ_FAILED") \
E_(afs_file_error_writeback_fail, "WRITEBACK_FAILED")
/*
* Export enum symbols via userspace.
@@ -197,6 +230,9 @@ afs_fs_operations;
afs_vl_operations;
afs_edit_dir_ops;
afs_edit_dir_reasons;
afs_eproto_causes;
afs_io_errors;
afs_file_errors;
/*
* Now redefine the EM() and E_() macros to map the enums to the strings that
@@ -613,6 +649,51 @@ TRACE_EVENT(afs_protocol_error,
__print_symbolic(__entry->cause, afs_eproto_causes))
);
TRACE_EVENT(afs_io_error,
TP_PROTO(unsigned int call, int error, enum afs_io_error where),
TP_ARGS(call, error, where),
TP_STRUCT__entry(
__field(unsigned int, call )
__field(int, error )
__field(enum afs_io_error, where )
),
TP_fast_assign(
__entry->call = call;
__entry->error = error;
__entry->where = where;
),
TP_printk("c=%08x r=%d %s",
__entry->call, __entry->error,
__print_symbolic(__entry->where, afs_io_errors))
);
TRACE_EVENT(afs_file_error,
TP_PROTO(struct afs_vnode *vnode, int error, enum afs_file_error where),
TP_ARGS(vnode, error, where),
TP_STRUCT__entry(
__field_struct(struct afs_fid, fid )
__field(int, error )
__field(enum afs_file_error, where )
),
TP_fast_assign(
__entry->fid = vnode->fid;
__entry->error = error;
__entry->where = where;
),
TP_printk("%x:%x:%x r=%d %s",
__entry->fid.vid, __entry->fid.vnode, __entry->fid.unique,
__entry->error,
__print_symbolic(__entry->where, afs_file_errors))
);
TRACE_EVENT(afs_cm_no_server,
TP_PROTO(struct afs_call *call, struct sockaddr_rxrpc *srx),