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Bug #1049

pnfs: A lot of BAD_SESSION, SEQ_MISORDERED, SERVERFAULT

Added by Vitaliy Gusev over 8 years ago. Updated about 8 years ago.

Status:
Feedback
Priority:
Low
Assignee:
Vitaliy Gusev
Category:
-
Start date:
2011-05-19
Due date:
% Done:

100%

Estimated time:
Difficulty:
Expert
Tags:
needs-triage

Description

At the Lab: during copy big 500M file to 2 DS a lot of errors see in the tcpdump's file.

NFS4ERR_BAD_SESSION                - on SEQUENCE request to DS
 NFS4ERR_SEQ_MISORDERED         - on SEQUENCE request to DS
 NFS4ERR_SERVERFAULT                 - on  WRITE request      to DS
NFS4ERR_STALE_CLIENTID            - on CREATE_SESSION to DS
NFS4ERR_DELAY                        - on OPEN request to MDS

History

#1

Updated by Vitaliy Gusev over 8 years ago

  • File dump added
#2

Updated by Vitaliy Gusev over 8 years ago

  • File deleted (dump)
#3

Updated by Vitaliy Gusev over 8 years ago

  • Priority changed from Urgent to Low

Affected to gethrestime_sec() under KVM issue.

Issue:
gethrestime_sec returns 0,

gethrestime() returns
.tv_sec == 0

Due to this session, clients become old.

Patch below fixes this situation:

diff -r 6cce99be4e7a usr/src/uts/i86pc/io/todpc_subr.c
--- a/usr/src/uts/i86pc/io/todpc_subr.c Wed May 25 21:29:50 2011 +0400
+++ b/usr/src/uts/i86pc/io/todpc_subr.c Thu May 26 06:07:03 2011 +0400
@@ -172,14 +172,14 @@ todpc_get(tod_ops_t *top)
        int compute_century;
        static int century_warn = 1; /* only warn once, not each time called */
        static int range_warn = 1;
+       static timestruc_t ts_prev;
+

        ASSERT(MUTEX_HELD(&tod_lock));

        if (todpc_rtcget((unsigned char *)&rtc)) {
-               ts.tv_sec = 0;
-               ts.tv_nsec = 0;
                tod_status_set(TOD_GET_FAILED);
-               return (ts);
+               return (ts_prev);
        }

        /* assume that we wrap the rtc year back to zero at 2000 */
@@ -219,6 +219,7 @@ todpc_get(tod_ops_t *top)

        ts.tv_sec = tod_to_utc(tod) + ggmtl();
        ts.tv_nsec = 0;
+       ts_prev = ts;

        return (ts);
 }
#4

Updated by Vitaliy Gusev over 8 years ago

  • Status changed from In Progress to Resolved
#5

Updated by Vitaliy Gusev over 8 years ago

  • % Done changed from 0 to 100
#6

Updated by Alexey Zaytsev about 8 years ago

  • Status changed from Resolved to Feedback

The resolved status was premature.

1) The patch seems to be just a workaround.
2) It was not integrated into ilumos.

#7

Updated by Albert Lee about 8 years ago

  • Project changed from NFS-4.1 to illumos gate

This affects illumos-gate.

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