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Commit 08cb47fa authored by Trond Myklebust's avatar Trond Myklebust
Browse files

NFSv4.1: Add tracepoints for debugging test_stateid events 



Add tracepoints to detect issues with the TEST_STATEID operation.

Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent 2f92ae34

fs/nfs/nfs4proc.c

+3 −0
Original line number Diff line number Diff line
@@ -1950,6 +1950,7 @@ static void nfs41_clear_delegation_stateid(struct nfs4_state *state) 
		cred = get_rpccred(delegation->cred);

		rcu_read_unlock();

		status = nfs41_test_stateid(server, stateid, cred);

		trace_nfs4_test_delegation_stateid(state, NULL, status);

	} else

		rcu_read_unlock();
@@ -1992,6 +1993,7 @@ static int nfs41_check_open_stateid(struct nfs4_state *state) 
		return -NFS4ERR_BAD_STATEID;



	status = nfs41_test_stateid(server, stateid, cred);

	trace_nfs4_test_open_stateid(state, NULL, status);

	if (status != NFS_OK) {

		/* Free the stateid unless the server explicitly

		 * informs us the stateid is unrecognized. */
@@ -5472,6 +5474,7 @@ static int nfs41_check_expired_locks(struct nfs4_state *state) 
			status = nfs41_test_stateid(server,

					&lsp->ls_stateid,

					cred);

			trace_nfs4_test_lock_stateid(state, lsp, status);

			if (status != NFS_OK) {

				/* Free the stateid unless the server

				 * informs us the stateid is unrecognized. */

fs/nfs/nfs4trace.h

+49 −0
Original line number Diff line number Diff line
@@ -638,6 +638,55 @@ TRACE_EVENT(nfs4_delegreturn_exit, 
		)

);



#ifdef CONFIG_NFS_V4_1

DECLARE_EVENT_CLASS(nfs4_test_stateid_event,

		TP_PROTO(

			const struct nfs4_state *state,

			const struct nfs4_lock_state *lsp,

			int error

		),



		TP_ARGS(state, lsp, error),



		TP_STRUCT__entry(

			__field(int, error)

			__field(dev_t, dev)

			__field(u32, fhandle)

			__field(u64, fileid)

		),



		TP_fast_assign(

			const struct inode *inode = state->inode;



			__entry->error = error;

			__entry->dev = inode->i_sb->s_dev;

			__entry->fileid = NFS_FILEID(inode);

			__entry->fhandle = nfs_fhandle_hash(NFS_FH(inode));

		),



		TP_printk(

			"error=%d (%s) fileid=%02x:%02x:%llu fhandle=0x%08x",

			__entry->error,

			show_nfsv4_errors(__entry->error),

			MAJOR(__entry->dev), MINOR(__entry->dev),

			(unsigned long long)__entry->fileid,

			__entry->fhandle

		)

);



#define DEFINE_NFS4_TEST_STATEID_EVENT(name) \

	DEFINE_EVENT(nfs4_test_stateid_event, name, \

			TP_PROTO( \

				const struct nfs4_state *state, \

				const struct nfs4_lock_state *lsp, \

				int error \

			), \

			TP_ARGS(state, lsp, error))

DEFINE_NFS4_TEST_STATEID_EVENT(nfs4_test_delegation_stateid);

DEFINE_NFS4_TEST_STATEID_EVENT(nfs4_test_open_stateid);

DEFINE_NFS4_TEST_STATEID_EVENT(nfs4_test_lock_stateid);

#endif /* CONFIG_NFS_V4_1 */



DECLARE_EVENT_CLASS(nfs4_lookup_event,

		TP_PROTO(

			const struct inode *dir,