NFS: Add trace events to report non-zero NFS status codes
These can help field troubleshooting without needing the overhead of a full network capture (ie, tcpdump). Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Родитель
eb72f484a5
Коммит
f23f658404
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@ -22,6 +22,7 @@
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#include <linux/nfs.h>
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#include <linux/nfs2.h>
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#include <linux/nfs_fs.h>
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#include "nfstrace.h"
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#include "internal.h"
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#define NFSDBG_FACILITY NFSDBG_XDR
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@ -145,7 +146,13 @@ static int decode_stat(struct xdr_stream *xdr, enum nfs_stat *status)
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p = xdr_inline_decode(xdr, 4);
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if (unlikely(!p))
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return -EIO;
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if (unlikely(*p != cpu_to_be32(NFS_OK)))
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goto out_status;
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*status = 0;
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return 0;
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out_status:
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*status = be32_to_cpup(p);
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trace_nfs_xdr_status((int)*status);
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return 0;
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}
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@ -21,6 +21,7 @@
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#include <linux/nfs3.h>
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#include <linux/nfs_fs.h>
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#include <linux/nfsacl.h>
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#include "nfstrace.h"
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#include "internal.h"
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#define NFSDBG_FACILITY NFSDBG_XDR
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@ -337,7 +338,13 @@ static int decode_nfsstat3(struct xdr_stream *xdr, enum nfs_stat *status)
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p = xdr_inline_decode(xdr, 4);
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if (unlikely(!p))
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return -EIO;
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if (unlikely(*p != cpu_to_be32(NFS3_OK)))
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goto out_status;
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*status = 0;
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return 0;
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out_status:
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*status = be32_to_cpup(p);
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trace_nfs_xdr_status((int)*status);
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return 0;
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}
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@ -524,6 +524,31 @@ TRACE_EVENT(nfs4_setup_sequence,
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)
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);
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TRACE_EVENT(nfs4_xdr_status,
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TP_PROTO(
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u32 op,
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int error
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),
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TP_ARGS(op, error),
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TP_STRUCT__entry(
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__field(u32, op)
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__field(int, error)
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),
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TP_fast_assign(
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__entry->op = op;
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__entry->error = -error;
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),
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TP_printk(
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"operation %d: nfs status %d (%s)",
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__entry->op,
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__entry->error, show_nfsv4_errors(__entry->error)
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)
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);
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DECLARE_EVENT_CLASS(nfs4_open_event,
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TP_PROTO(
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const struct nfs_open_context *ctx,
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@ -54,6 +54,7 @@
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#include <linux/nfs_fs.h>
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#include "nfs4_fs.h"
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#include "nfs4trace.h"
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#include "internal.h"
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#include "nfs4idmap.h"
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#include "nfs4session.h"
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@ -3188,11 +3189,14 @@ static bool __decode_op_hdr(struct xdr_stream *xdr, enum nfs_opnum4 expected,
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opnum = be32_to_cpup(p++);
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if (unlikely(opnum != expected))
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goto out_bad_operation;
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if (unlikely(*p != cpu_to_be32(NFS_OK)))
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goto out_status;
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*nfs_retval = 0;
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return true;
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out_status:
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nfserr = be32_to_cpup(p);
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if (nfserr == NFS_OK)
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*nfs_retval = 0;
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else
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*nfs_retval = nfs4_stat_to_errno(nfserr);
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trace_nfs4_xdr_status(opnum, nfserr);
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*nfs_retval = nfs4_stat_to_errno(nfserr);
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return true;
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out_bad_operation:
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dprintk("nfs: Server returned operation"
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@ -11,3 +11,4 @@
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EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_fsync_enter);
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EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_fsync_exit);
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EXPORT_TRACEPOINT_SYMBOL_GPL(nfs_xdr_status);
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@ -969,6 +969,91 @@ TRACE_EVENT(nfs_commit_done,
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)
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);
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TRACE_DEFINE_ENUM(NFS_OK);
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TRACE_DEFINE_ENUM(NFSERR_PERM);
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TRACE_DEFINE_ENUM(NFSERR_NOENT);
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TRACE_DEFINE_ENUM(NFSERR_IO);
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TRACE_DEFINE_ENUM(NFSERR_NXIO);
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TRACE_DEFINE_ENUM(NFSERR_ACCES);
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TRACE_DEFINE_ENUM(NFSERR_EXIST);
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TRACE_DEFINE_ENUM(NFSERR_XDEV);
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TRACE_DEFINE_ENUM(NFSERR_NODEV);
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TRACE_DEFINE_ENUM(NFSERR_NOTDIR);
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TRACE_DEFINE_ENUM(NFSERR_ISDIR);
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TRACE_DEFINE_ENUM(NFSERR_INVAL);
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TRACE_DEFINE_ENUM(NFSERR_FBIG);
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TRACE_DEFINE_ENUM(NFSERR_NOSPC);
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TRACE_DEFINE_ENUM(NFSERR_ROFS);
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TRACE_DEFINE_ENUM(NFSERR_MLINK);
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TRACE_DEFINE_ENUM(NFSERR_NAMETOOLONG);
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TRACE_DEFINE_ENUM(NFSERR_NOTEMPTY);
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TRACE_DEFINE_ENUM(NFSERR_DQUOT);
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TRACE_DEFINE_ENUM(NFSERR_STALE);
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TRACE_DEFINE_ENUM(NFSERR_REMOTE);
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TRACE_DEFINE_ENUM(NFSERR_WFLUSH);
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TRACE_DEFINE_ENUM(NFSERR_BADHANDLE);
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TRACE_DEFINE_ENUM(NFSERR_NOT_SYNC);
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TRACE_DEFINE_ENUM(NFSERR_BAD_COOKIE);
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TRACE_DEFINE_ENUM(NFSERR_NOTSUPP);
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TRACE_DEFINE_ENUM(NFSERR_TOOSMALL);
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TRACE_DEFINE_ENUM(NFSERR_SERVERFAULT);
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TRACE_DEFINE_ENUM(NFSERR_BADTYPE);
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TRACE_DEFINE_ENUM(NFSERR_JUKEBOX);
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#define nfs_show_status(x) \
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__print_symbolic(x, \
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{ NFS_OK, "OK" }, \
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{ NFSERR_PERM, "PERM" }, \
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{ NFSERR_NOENT, "NOENT" }, \
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{ NFSERR_IO, "IO" }, \
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{ NFSERR_NXIO, "NXIO" }, \
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{ NFSERR_ACCES, "ACCES" }, \
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{ NFSERR_EXIST, "EXIST" }, \
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{ NFSERR_XDEV, "XDEV" }, \
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{ NFSERR_NODEV, "NODEV" }, \
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{ NFSERR_NOTDIR, "NOTDIR" }, \
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{ NFSERR_ISDIR, "ISDIR" }, \
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{ NFSERR_INVAL, "INVAL" }, \
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{ NFSERR_FBIG, "FBIG" }, \
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{ NFSERR_NOSPC, "NOSPC" }, \
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{ NFSERR_ROFS, "ROFS" }, \
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{ NFSERR_MLINK, "MLINK" }, \
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{ NFSERR_NAMETOOLONG, "NAMETOOLONG" }, \
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{ NFSERR_NOTEMPTY, "NOTEMPTY" }, \
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{ NFSERR_DQUOT, "DQUOT" }, \
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{ NFSERR_STALE, "STALE" }, \
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{ NFSERR_REMOTE, "REMOTE" }, \
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{ NFSERR_WFLUSH, "WFLUSH" }, \
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{ NFSERR_BADHANDLE, "BADHANDLE" }, \
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{ NFSERR_NOT_SYNC, "NOTSYNC" }, \
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{ NFSERR_BAD_COOKIE, "BADCOOKIE" }, \
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{ NFSERR_NOTSUPP, "NOTSUPP" }, \
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{ NFSERR_TOOSMALL, "TOOSMALL" }, \
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{ NFSERR_SERVERFAULT, "REMOTEIO" }, \
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{ NFSERR_BADTYPE, "BADTYPE" }, \
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{ NFSERR_JUKEBOX, "JUKEBOX" })
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TRACE_EVENT(nfs_xdr_status,
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TP_PROTO(
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int error
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),
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TP_ARGS(error),
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TP_STRUCT__entry(
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__field(int, error)
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),
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TP_fast_assign(
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__entry->error = error;
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),
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TP_printk(
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"error=%d (%s)",
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__entry->error, nfs_show_status(__entry->error)
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)
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);
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#endif /* _TRACE_NFS_H */
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#undef TRACE_INCLUDE_PATH
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