richard@xxxxxxxxxx wrote: > Replying to myself, this looks to be the same problem as was reported by > Sven earlier this week: Jepp, I think so. Unfortunately I'm a bit stuck in debugging this, as git-bisect just led me to another variant of broken behaviour (permission denied instead of infinite hang during mount). Wireshark output of Kernel 3.9.4 does not look all that interesting either (10.1.7.30=client, 10.1.7.111=server): No. Time Source Destination Protocol Length Info 1 0.000000 10.1.7.30 10.1.7.111 TCP 74 997 > nfs [SYN] Seq=0 Win=14600 Len=0 MSS=1460 SACK_PERM=1 TSval=1518792 TSecr=0 WS=128 2 0.000224 10.1.7.111 10.1.7.30 TCP 74 nfs > 997 [SYN, ACK] Seq=0 Ack=1 Win=14480 Len=0 MSS=1460 SACK_PERM=1 TSval=18228 TSecr=1518792 WS=64 3 0.000250 10.1.7.30 10.1.7.111 TCP 66 997 > nfs [ACK] Seq=1 Ack=1 Win=14720 Len=0 TSval=1518793 TSecr=18228 4 0.000273 10.1.7.30 10.1.7.111 NFS 110 V4 NULL Call (Reply In 6) 5 0.000389 10.1.7.111 10.1.7.30 TCP 66 nfs > 997 [ACK] Seq=1 Ack=45 Win=14528 Len=0 TSval=18228 TSecr=1518793 6 0.000554 10.1.7.111 10.1.7.30 NFS 94 V4 NULL Reply (Call In 4) 7 0.000564 10.1.7.30 10.1.7.111 TCP 66 997 > nfs [ACK] Seq=45 Ack=29 Win=14720 Len=0 TSval=1518793 TSecr=18228 8 0.005250 10.1.7.30 10.1.7.111 TCP 74 60072 > nfs [SYN] Seq=0 Win=14600 Len=0 MSS=1460 SACK_PERM=1 TSval=1518794 TSecr=0 WS=128 9 0.005393 10.1.7.111 10.1.7.30 TCP 74 nfs > 60072 [SYN, ACK] Seq=0 Ack=1 Win=14480 Len=0 MSS=1460 SACK_PERM=1 TSval=18229 TSecr=1518794 WS=64 10 0.005409 10.1.7.30 10.1.7.111 TCP 66 60072 > nfs [ACK] Seq=1 Ack=1 Win=14720 Len=0 TSval=1518794 TSecr=18229 11 0.006228 10.1.7.30 10.1.7.111 NFS 1450 V4 NULL Call (Reply In 13) 12 0.006393 10.1.7.111 10.1.7.30 TCP 66 nfs > 60072 [ACK] Seq=1 Ack=1385 Win=17408 Len=0 TSval=18230 TSecr=1518794 13 0.016922 10.1.7.111 10.1.7.30 NFS 298 V4 NULL Reply (Call In 11) 14 0.016938 10.1.7.30 10.1.7.111 TCP 66 60072 > nfs [ACK] Seq=1385 Ack=233 Win=15744 Len=0 TSval=1518797 TSecr=18232 15 0.017931 10.1.7.30 10.1.7.111 NFS 126 V4 NULL Call 16 0.017950 10.1.7.30 10.1.7.111 NFS 270 V4 Call SETCLIENTID 17 0.017956 10.1.7.30 10.1.7.111 TCP 66 60072 > nfs [FIN, ACK] Seq=1445 Ack=233 Win=15744 Len=0 TSval=1518797 TSecr=18232 18 0.018916 10.1.7.111 10.1.7.30 TCP 66 nfs > 60072 [FIN, ACK] Seq=233 Ack=1446 Win=17408 Len=0 TSval=18233 TSecr=1518797 19 0.018935 10.1.7.30 10.1.7.111 TCP 66 60072 > nfs [ACK] Seq=1446 Ack=234 Win=15744 Len=0 TSval=1518797 TSecr=18233 20 0.056246 10.1.7.111 10.1.7.30 TCP 66 nfs > 997 [ACK] Seq=29 Ack=249 Win=15552 Len=0 TSval=18242 TSecr=1518797 Communication stalls here.. Sven -- "Those who do not understand Unix are condemned to reinvent it, poorly" (Henry Spencer) /me is giggls@ircnet, http://sven.gegg.us/ on the Web -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
