I stumbled across this entry:
http://blogs.sun.com/shepler/entry/port_623_or_the_mount
and even though we do not see this issue with port 623, but rather 664.
But sure enough, it was sending SYN/ACK, then timeout until RST.
I waited for the port to the released, told inetd to listen on port 664
and voila, mount works fine again.
We use Supermicros with Intel? 82573V and 82573L.
I would send Shepler my thanks but comments are disabled.
Useless logs:
# mount -o proto=tcp,vers=3 172.20.12.226:/export/src /mnt
172.20.12.6 -> 172.20.12.226 PORTMAP C GETPORT prog=100005 (MOUNT)
vers=3 proto=UDP
172.20.12.226 -> 172.20.12.6 PORTMAP R GETPORT port=39049
172.20.12.6 -> 172.20.12.226 MOUNT3 C Null
172.20.12.226 -> 172.20.12.6 MOUNT3 R Null
172.20.12.6 -> 172.20.12.226 MOUNT3 C Mount /export/src
172.20.12.226 -> 172.20.12.6 MOUNT3 R Mount OK FH=076E Auth=unix
172.20.12.6 -> 172.20.12.226 PORTMAP C GETPORT prog=100003 (NFS)
vers=3 proto=TCP
172.20.12.226 -> 172.20.12.6 PORTMAP R GETPORT port=2049
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=38337 Syn Seq=592414549
Len=0 Win=49640 Options=<mss 1460,nop,wscale 0,nop,nop,sackOK>
172.20.12.226 -> 172.20.12.6 TCP D=38337 S=2049 Syn Ack=592414550
Seq=2210245643 Len=0 Win=49640 Options=<mss 1460,nop,wscale
0,nop,nop,sackOK>
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=38337 Ack=2210245644
Seq=592414550 Len=0 Win=49640
172.20.12.6 -> 172.20.12.226 NFS C NULL3
172.20.12.226 -> 172.20.12.6 TCP D=38337 S=2049 Ack=592414670
Seq=2210245644 Len=0 Win=49520
172.20.12.226 -> 172.20.12.6 NFS R NULL3
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=38337 Ack=2210245672
Seq=592414670 Len=0 Win=49640
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=38337 Fin Ack=2210245672
Seq=592414670 Len=0 Win=49640
172.20.12.226 -> 172.20.12.6 TCP D=38337 S=2049 Ack=592414671
Seq=2210245672 Len=0 Win=49640
172.20.12.226 -> 172.20.12.6 TCP D=38337 S=2049 Fin Ack=592414671
Seq=2210245672 Len=0 Win=49640
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=38337 Ack=2210245673
Seq=592414671 Len=0 Win=49640
172.20.12.6 -> 172.20.12.226 PORTMAP C GETPORT prog=100003 (NFS)
vers=3 proto=TCP
172.20.12.226 -> 172.20.12.6 PORTMAP R GETPORT port=2049
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=38338 Syn Seq=3614232918
Len=0 Win=49640 Options=<mss 1460,nop,wscale 0,nop,nop,sackOK>
172.20.12.226 -> 172.20.12.6 TCP D=38338 S=2049 Syn Ack=3614232919
Seq=2210460804 Len=0 Win=49640 Options=<mss 1460,nop,wscale
0,nop,nop,sackOK>
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=38338 Ack=2210460805
Seq=3614232919 Len=0 Win=49640
172.20.12.6 -> 172.20.12.226 NFS C NULL3
172.20.12.226 -> 172.20.12.6 TCP D=38338 S=2049 Ack=3614233039
Seq=2210460805 Len=0 Win=49520
172.20.12.226 -> 172.20.12.6 NFS R NULL3
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=38338 Ack=2210460833
Seq=3614233039 Len=0 Win=49640
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=38338 Fin Ack=2210460833
Seq=3614233039 Len=0 Win=49640
172.20.12.226 -> 172.20.12.6 TCP D=38338 S=2049 Ack=3614233040
Seq=2210460833 Len=0 Win=49640
172.20.12.226 -> 172.20.12.6 TCP D=38338 S=2049 Fin Ack=3614233040
Seq=2210460833 Len=0 Win=49640
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=38338 Ack=2210460834
Seq=3614233040 Len=0 Win=49640
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=664 Rst Ack=0 Seq=3456416233
Len=0 Win=49640
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=664 Syn Seq=3507413975 Len=0
Win=49640 Options=<mss 1460,nop,wscale 0,nop,nop,sackOK>
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=664 Syn Seq=3507413975 Len=0
Win=49640 Options=<mss 1460,nop,wscale 0,nop,nop,sackOK>
# netstat
172.20.12.6.664 172.20.12.226.2049 0 0 49640 0 SYN_SENT
After inetd hack:
# netstat
*.664 *.* 0 0 49152 0 BOUND
# mount -o proto=tcp,vers=3 172.20.12.226:/export/src /mnt
172.20.12.6 -> 172.20.12.226 TCP D=2049 S=661 Syn Seq=1448210229 Len=0
Win=49640 Options=<mss 1460,nop,wscale 0,nop,nop,sackOK>
# df
172.20.12.226:/export/src
24T 11G 24T 1% /mnt
Jorgen Lundman wrote:
>
> Ok, it still happens even when not using aliases, it just took longer to
> turn up.
>
> Attempting to mount (snoop running on NFS client)
--
Jorgen Lundman | <lundman at lundman.net>
Unix Administrator | +81 (0)3 -5456-2687 ext 1017 (work)
Shibuya-ku, Tokyo | +81 (0)90-5578-8500 (cell)
Japan | +81 (0)3 -3375-1767 (home)
