SFPの不良が原因のNAS読み取り遅延
環境
ONTAP 9
問題
- NAS共有で読み取りパフォーマンスの低下が報告される
- LIFをホストするコントローラポートに接続されたスイッチポートでCRCエラーが報告される
Ethernet1/40 is up admin state is up, Dedicated Interface Hardware: 1000/10000/25000 Ethernet, address: 748f.c20e.54b7 (bia 748f.c20e.54b7) Description: itsgbslnasc01n1 MTU 9216 bytes, BW 10000000 Kbit , DLY 10 usec reliability 253/255, txload 1/255, rxload 1/255 Encapsulation ARPA, medium is broadcast Port mode is access full-duplex, 10 Gb/s, media type is 10G Beacon is turned off Auto-Negotiation is turned on FEC mode is Auto Input flow-control is off, output flow-control is off Auto-mdix is turned off Rate mode is dedicated Switchport monitor is off EtherType is 0x8100 EEE (efficient-ethernet) : n/a admin fec state is auto, oper fec state is off Last link flapped 1week(s) 4day(s) Last clearing of "show interface" counters never 4 interface resets Load-Interval #1: 30 seconds 30 seconds input rate 11320 bits/sec, 1 packets/sec 30 seconds output rate 29768 bits/sec, 7 packets/sec input rate 11.32 Kbps, 1 pps; output rate 29.77 Kbps, 7 pps Load-Interval #2: 5 minute (300 seconds) 300 seconds input rate 6448 bits/sec, 3 packets/sec 300 seconds output rate 17896 bits/sec, 5 packets/sec input rate 6.45 Kbps, 3 pps; output rate 17.90 Kbps, 5 pps RX 179794285 unicast packets 180564 multicast packets 243884 broadcast packets 180218733 input packets 149626636212 bytes 0 jumbo packets 0 storm suppression packets 127 runts 0 giants 3426004 CRC 0 no buffer 3426311 input error 0 short frame 0 overrun 0 underrun 0 ignored 0 watchdog 0 bad etype drop 0 bad proto drop 0 if down drop 0 input with dribble 0 input discard 0 Rx pause TX 150701546 unicast packets 10728108 multicast packets 5426639 broadcast packets 166856293 output packets 62138770021 bytes 0 jumbo packets 0 output error 0 collision 0 deferred 0 late collision 0 lost carrier 0 no carrier 0 babble 1889662 output discard 0 Tx pause