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クラスタインターコネクトでポートエラーが発生してレイテンシが高くなります

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環境

ONTAP 9

問題

  • 共有へのクライアントアクセスは非常に低速です。
  • qos statistics volume latency showで は、クラスタインターコネクトから、高レイテンシをレポートできます。

cluster1::> qos statistics volume latency show -volume vserver_vol01 -vserver  vserver1
Workload       ID   Latency   Network   Cluster    Data     Disk   QoS Max   QoS Min    NVRAM    Cloud  FlexCache   SM Sync      VA
--------------- ------ ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ---------- ----------
-total-        -   10.71ms   520.00us   9.63ms   465.00us   88.00us     0ms     0ms    3.00us     0ms     0ms     0ms     0ms
vserver_vol01..   7948  1247.00us   48.00us  1140.00us   25.00us   33.00us     0ms     0ms    1.00us     0ms     0ms     0ms     0ms
-total-        -   26.10ms    5.74ms   19.53ms   753.00us   71.00us     0ms     0ms    6.00us     0ms     0ms     0ms     0ms
vserver_vol01..   7948   479.00us   41.00us   259.00us   26.00us   150.00us     0ms     0ms    3.00us     0ms     0ms     0ms     0ms
-total-        -   125.97ms   823.00us  124.86ms   187.00us   86.00us     0ms     0ms    8.00us     0ms     0ms     0ms     0ms
vserver_vol01..   7948  1466.00us   62.00us  1238.00us   45.00us   109.00us     0ms     0ms   12.00us     0ms     0ms     0ms     0ms

  • EMSログで報告されるCRCエラー:

Mon Dec 12 13:31:37 +0530 [cluster1: vifmgr: vifmgr.cluscheck.hwerrors:alert]: Port e0e on node cluster1-01 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped).
Mon Dec 12 14:31:37 +0530 [cluster1: vifmgr: vifmgr.cluscheck.hwerrors:alert]: Port e0e on node cluster1-01 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped).
Mon Dec 12 15:31:38 +0530 [cluster1: vifmgr: vifmgr.cluscheck.hwerrors:alert]: Port e0e on node cluster1-01 is reporting a high number (at least 1 per 1000 packets) of observed hardware errors (CRC, length, alignment, dropped).

 -- interface  e0e  (54 days, 3 hours, 15 minutes, 51 seconds) --

RECEIVE
Total frames:   11316m | Frames/second:   2420  | Total bytes:    11802g
Bytes/second:    2523k | Total errors:    290m | Errors/minute:   3732
Total discards:    0  | Discards/minute:    0  | Multi/broadcast:  6794k
Non-primary u/c:    0  | Errored frames:    0  | Unsupported Op:    0
CRC errors:     273m | Runt frames:      0  | Fragment:      797k
Long frames:     36  | Jabber:        4  | Length errors:     0
Alignment errors:   0  | No buffer:       0  | Pause:         0
Jumbo:        105m | Error symbol:   16247k | Bus overruns:     0
Queue drops:      0  | LRO segments:    4105m | LRO bytes:     11181g
LRO6 segments:     0  | LRO6 bytes:      0  | Bad UDP cksum:     0
Bad UDP6 cksum:    0  | Bad TCP cksum:     0  | Bad TCP6 cksum:    0
Mcast v6 solicit:   0  | Lagg errors:      0  | Lacp errors:      0
Lacp PDU errors:    0

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