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smb3: add dynamic tracepoint for reflink errors

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There are cases where debugging clone_range ("smb2_duplicate_extents"
function) and in the future copy_range ("smb2_copychunk_range") can
be helpful. Add dynamic trace points for any errors in clone, and
a followon patch will add them for copychunk.

  "trace-cmd record -e smb3_clone_err"

Reviewed-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Steve French 2024-07-23 18:12:40 -05:00
parent 0e314e4526
commit 5779d398db
2 changed files with 62 additions and 0 deletions
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5
fs/smb/client/smb2ops.c
View file

@ -2075,6 +2075,11 @@ smb2_duplicate_extents(const unsigned int xid,
cifs_dbg(FYI, "Non-zero response length in duplicate extents\n");
duplicate_extents_out:
if (rc)
trace_smb3_clone_err(xid, srcfile->fid.volatile_fid,
trgtfile->fid.volatile_fid,
tcon->tid, tcon->ses->Suid, src_off,
dest_off, len, rc);
return rc;
}

57
fs/smb/client/trace.h
View file

@ -206,6 +206,63 @@ DEFINE_SMB3_OTHER_ERR_EVENT(query_dir_err);
DEFINE_SMB3_OTHER_ERR_EVENT(zero_err);
DEFINE_SMB3_OTHER_ERR_EVENT(falloc_err);
/*
* For logging errors in reflink and copy_range ops e.g. smb2_copychunk_range
* and smb2_duplicate_extents
*/
DECLARE_EVENT_CLASS(smb3_copy_range_err_class,
TP_PROTO(unsigned int xid,
__u64 src_fid,
__u64 target_fid,
__u32 tid,
__u64 sesid,
__u64 src_offset,
__u64 target_offset,
__u32 len,
int rc),
TP_ARGS(xid, src_fid, target_fid, tid, sesid, src_offset, target_offset, len, rc),
TP_STRUCT__entry(
__field(unsigned int, xid)
__field(__u64, src_fid)
__field(__u64, target_fid)
__field(__u32, tid)
__field(__u64, sesid)
__field(__u64, src_offset)
__field(__u64, target_offset)
__field(__u32, len)
__field(int, rc)
),
TP_fast_assign(
__entry->xid = xid;
__entry->src_fid = src_fid;
__entry->target_fid = target_fid;
__entry->tid = tid;
__entry->sesid = sesid;
__entry->src_offset = src_offset;
__entry->target_offset = target_offset;
__entry->len = len;
__entry->rc = rc;
),
TP_printk("\txid=%u sid=0x%llx tid=0x%x source fid=0x%llx source offset=0x%llx target fid=0x%llx target offset=0x%llx len=0x%x rc=%d",
__entry->xid, __entry->sesid, __entry->tid, __entry->target_fid,
__entry->src_offset, __entry->target_fid, __entry->target_offset, __entry->len, __entry->rc)
)
#define DEFINE_SMB3_COPY_RANGE_ERR_EVENT(name) \
DEFINE_EVENT(smb3_copy_range_err_class, smb3_##name, \
TP_PROTO(unsigned int xid, \
__u64 src_fid, \
__u64 target_fid, \
__u32 tid, \
__u64 sesid, \
__u64 src_offset, \
__u64 target_offset, \
__u32 len, \
int rc), \
TP_ARGS(xid, src_fid, target_fid, tid, sesid, src_offset, target_offset, len, rc))
DEFINE_SMB3_COPY_RANGE_ERR_EVENT(clone_err);
/* TODO: Add SMB3_COPY_RANGE_ERR_EVENT(copychunk_err) */
/* For logging successful read or write */
DECLARE_EVENT_CLASS(smb3_rw_done_class,