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-   -   NFS tcpdump give rpc reject messages (https://www.linuxquestions.org/questions/linux-newbie-8/nfs-tcpdump-give-rpc-reject-messages-4175611062/)

kumarjohn 08-01-2017 01:12 PM

NFS tcpdump give rpc reject messages
 
Hi,

NFS share is getting lot of RPC reject logs. which makes IO on NFS share very slow and sometimes CPU Load goes very high due to this.

Quote:

tcpdump -s 0 -n -i eth1 | grep reason
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth1, link-type EN10MB (Ethernet), capture size 65535 bytes
01:36:50.261699 IP 192.168.20.5.2049 > 192.168.20.203.917: Flags [.], seq 433436:434884, ack 11021613, win 9188, options [nop,nop,TS val 3396781974 ecr 1341991034], length 1448: NFS reply xid 1 reply ERR 1444: Unknown reason for rejecting rpc message 420
01:36:50.273142 IP 192.168.20.5.2049 > 192.168.20.203.917: Flags [.], seq 553168:554616, ack 16737561, win 5039, options [nop,nop,TS val 3396781975 ecr 1341991037], length 1448: NFS reply xid 0 reply ERR 1444: Unknown reason for rejecting rpc message 2956685858
01:36:50.283494 IP 192.168.20.5.2049 > 192.168.20.203.917: Flags [.], seq 803372:804820, ack 22002461, win 6272, options [nop,nop,TS val 3396781976 ecr 1341991039], length 1448: NFS reply xid 0 reply ERR 1444: Unknown reason for rejecting rpc message 2770191972
01:36:50.313544 IP 192.168.20.5.2049 > 192.168.20.203.917: Flags [.], seq 1132564:1134012, ack 36043609, win 7532, options [nop,nop,TS val 3396781979 ecr 1341991047], length 1448: NFS reply xid 0 reply ERR 1444: Unknown reason for rejecting rpc message 2746496249
01:36:50.323920 IP 192.168.20.5.2049 > 192.168.20.203.917: Flags [.], seq 1389312:1390760, ack 40838805, win 14097, options [nop,nop,TS val 3396781980 ecr 1341991049], length 1448: NFS reply xid 1 reply ERR 1444: Unknown reason for rejecting rpc message 420
Best Regards,
KJ

TheEzekielProject 08-01-2017 01:14 PM

Quote:

tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
Have you tried this for more information?


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