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pnfs: add pnfs_ds_connect trace point

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This tracepoint aims to expose pnfs DS connect status

Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Link: https://lore.kernel.org/r/20250610151246.9147-1-tigran.mkrtchyan@desy.de
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Tigran Mkrtchyan
2025-06-10 17:12:46 +02:00
committed by Trond Myklebust
parent c1b0b9d79f
commit a9e2183720
3 changed files with 36 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files
fs/nfs/nfs4trace.c
+1
View File
@@ -26,6 +26,7 @@ EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_read_done);
EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_write_done);
EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_read_pagelist);
EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_mds_fallback_write_pagelist);
EXPORT_TRACEPOINT_SYMBOL_GPL(pnfs_ds_connect);
EXPORT_TRACEPOINT_SYMBOL_GPL(ff_layout_read_error);
EXPORT_TRACEPOINT_SYMBOL_GPL(ff_layout_write_error);
fs/nfs/nfs4trace.h
+26
View File
@@ -274,6 +274,32 @@ TRACE_EVENT(nfs4_cb_offload,
show_nfs_stable_how(__entry->cb_how)
)
);
TRACE_EVENT(pnfs_ds_connect,
TP_PROTO(
char *ds_remotestr,
int status
),
TP_ARGS(ds_remotestr, status),
TP_STRUCT__entry(
__string(ds_ips, ds_remotestr)
__field(int, status)
),
TP_fast_assign(
__assign_str(ds_ips);
__entry->status = status;
),
TP_printk(
"ds_ips=%s, status=%d",
__get_str(ds_ips),
__entry->status
)
);
#endif /* CONFIG_NFS_V4_1 */
TRACE_EVENT(nfs4_setup_sequence,
fs/nfs/pnfs_nfs.c
+9 -5
View File
@@ -17,6 +17,7 @@
#include "internal.h"
#include "pnfs.h"
#include "netns.h"
#include "nfs4trace.h"
#define NFSDBG_FACILITY NFSDBG_PNFS
@@ -1007,8 +1008,10 @@ int nfs4_pnfs_ds_connect(struct nfs_server *mds_srv, struct nfs4_pnfs_ds *ds,
err = nfs4_wait_ds_connect(ds);
if (err || ds->ds_clp)
goto out;
if (nfs4_test_deviceid_unavailable(devid))
return -ENODEV;
if (nfs4_test_deviceid_unavailable(devid)) {
err = -ENODEV;
goto out;
}
} while (test_and_set_bit(NFS4DS_CONNECTING, &ds->ds_state) != 0);
if (ds->ds_clp)
@@ -1038,11 +1041,12 @@ out:
if (!ds->ds_clp || !nfs_client_init_is_complete(ds->ds_clp)) {
WARN_ON_ONCE(ds->ds_clp ||
!nfs4_test_deviceid_unavailable(devid));
return -EINVAL;
}
err = nfs_client_init_status(ds->ds_clp);
err = -EINVAL;
} else
err = nfs_client_init_status(ds->ds_clp);
}
trace_pnfs_ds_connect(ds->ds_remotestr, err);
return err;
}
EXPORT_SYMBOL_GPL(nfs4_pnfs_ds_connect);