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NFS4: Add a trace event to record invalid CB sequence IDs

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Help debug NFSv4 callback failures.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Chuck Lever
2019-06-19 10:33:47 -04:00
committed by Anna Schumaker
parent 675dd90ad0
commit c5833f0dc4
2 changed files with 58 additions and 8 deletions
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38
fs/nfs/nfs4trace.h
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@@ -490,6 +490,44 @@ TRACE_EVENT(nfs4_cb_sequence,
__entry->highest_slotid
)
);
TRACE_EVENT(nfs4_cb_seqid_err,
TP_PROTO(
const struct cb_sequenceargs *args,
__be32 status
),
TP_ARGS(args, status),
TP_STRUCT__entry(
__field(unsigned int, session)
__field(unsigned int, slot_nr)
__field(unsigned int, seq_nr)
__field(unsigned int, highest_slotid)
__field(unsigned int, cachethis)
__field(int, error)
),
TP_fast_assign(
__entry->session = nfs_session_id_hash(&args->csa_sessionid);
__entry->slot_nr = args->csa_slotid;
__entry->seq_nr = args->csa_sequenceid;
__entry->highest_slotid = args->csa_highestslotid;
__entry->cachethis = args->csa_cachethis;
__entry->error = -be32_to_cpu(status);
),
TP_printk(
"error=%d (%s) session=0x%08x slot_nr=%u seq_nr=%u "
"highest_slotid=%u",
__entry->error,
show_nfsv4_errors(__entry->error),
__entry->session,
__entry->slot_nr,
__entry->seq_nr,
__entry->highest_slotid
)
);
#endif /* CONFIG_NFS_V4_1 */
TRACE_EVENT(nfs4_setup_sequence,