Re: Networking AFS related problem
renyhp <[email protected]>
| Newsgroups | gmane.comp.file-systems.openafs.general |
|---|---|
| Message-ID | <20220202121544.6a419309@renato-X1Carbon> |
Hello Harald, thanks! > I would start with wireshark and filter on UDP ports 7000 and 7001, > then look if the packets are going out and if you get answers back > from the file servers and if you do if they are complete. Sometimes > bad networks drop or truncate UDP packets (either in or out) and if > they only truncate them, it can help to make your MTU size smaller, so > that not all default 1500 bytes are used. I test like 1400, 1200, .. > Restart afsd with additional parameter -rxmaxmtu SIZE. I have tried using wireshark and the following is a sample of what it captures on UDP ports 7000 and 7001, containing all the kinds of packets I see: Protocol Length Info ------------------------- AFS (RX) 74 VLDB Request: probe (514) RX 107 ACK Seq: 0 Call: 27 Source Port: 7001 Destination Port: 7003 RX 107 ACK Seq: 0 Call: 27 Source Port: 7001 Destination Port: 7003 AFS (RX) 74 VLDB Request: probe (514) RX 107 ACK Seq: 0 Call: 27 Source Port: 7001 Destination Port: 7003 RX 107 ACK Seq: 0 Call: 27 Source Port: 7001 Destination Port: 7003 RX 71 AFS (RX) 74 FS Request: get-capabilities (65540) AFS (RX) 74 FS Request: get-capabilities (65540) AFS (RX) 74 FS Request: get-capabilities (65540) AFS (RX) 74 FS Request: get-capabilities (65540) AFS (RX) 74 FS Request: get-capabilities (65540) AFS (RX) 74 FS Request: get-capabilities (65540) RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 107 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 107 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 107 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 107 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 107 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 107 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 AFS (RX) 74 FS Request: get-capabilities (65540) AFS (RX) 74 FS Request: get-capabilities (65540) AFS (RX) 74 FS Request: get-capabilities (65540) AFS (RX) 74 FS Request: get-capabilities (65540) RX 107 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 107 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 AFS (RX) 74 FS Request: get-capabilities (65540) AFS (RX) 74 FS Request: get-capabilities (65540) RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 634 ACK Seq: 0 Call: 1 Source Port: 7001 Destination Port: 7000 RX 71 RX 71 RX 71 RX 71 RX 71 RX 71 The source address is always only my private IP address, and the destination address is always an AFS server address. Do I understand correctly that I am not receiving any response from the servers? (Of course I am sure that the servers are actually up and running.) Also, is the length of these outgoing packets correct or are the outgoing packets damaged? Thank you again, renyhp