Folks:
My main desktop machine is connected to a server, and has three
directories mounted via NFS from the server. The options with which
they're mounted are:
soft,intr,timeo=12,wsize=8192,rsize=8192
As a result of *something*, I'm getting about 500 "pings" a second back
and forth from these two machines. Tcpdump reports the following (as a
representative sample; pokey is the server, sherman the desktop):
01:46:07.001643 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto:
UDP (17), length: 156) sherman.mars.lan.3510881473 > pokey.mars.lan.nfs:
128 getattr [|nfs]
01:46:07.001831 IP (tos 0x0, ttl 64, id 466, offset 0, flags [DF],
proto: UDP (17), length: 140) pokey.mars.lan.nfs >
sherman.mars.lan.3510881473: reply ok 112 getattr DIR 40777 ids
1000/1000 [|nfs]
01:46:07.003815 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto:
UDP (17), length: 156) sherman.mars.lan.3527658689 > pokey.mars.lan.nfs:
128 getattr [|nfs]
01:46:07.003980 IP (tos 0x0, ttl 64, id 467, offset 0, flags [DF],
proto: UDP (17), length: 140) pokey.mars.lan.nfs >
sherman.mars.lan.3527658689: reply ok 112 getattr DIR 40777 ids
1000/1000 [|nfs]
01:46:07.008768 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto:
UDP (17), length: 156) sherman.mars.lan.3544435905 > pokey.mars.lan.nfs:
128 getattr [|nfs]
01:46:07.008934 IP (tos 0x0, ttl 64, id 468, offset 0, flags [DF],
proto: UDP (17), length: 140) pokey.mars.lan.nfs >
sherman.mars.lan.3544435905: reply ok 112 getattr DIR 40777 ids
1000/1000 [|nfs]
01:46:07.012005 IP (tos 0x0, ttl 64, id 0, offset 0, flags [DF], proto:
UDP (17), length: 156) sherman.mars.lan.3561213121 > pokey.mars.lan.nfs:
128 getattr [|nfs]
01:46:07.012170 IP (tos 0x0, ttl 64, id 469, offset 0, flags [DF],
proto: UDP (17), length: 140) pokey.mars.lan.nfs >
sherman.mars.lan.3561213121: reply ok 112 getattr DIR 40755 ids
1000/1000 [|nfs]
Let me be clear: there is no program that I know of running in the
background which would be sending and receiving these packets, at least
not one I consciously started. I believe this is either a question of
how I'm mounting the directories, or a function of Linux NFS. My Windows
boxen don't do this.
So the question is, is this normal, or what can I do to reduce this?
Paul
-- Paul M. Foster ----------------------------------------------------------------------- This list is provided as an unmoderated internet service by Networked Knowledge Systems (NKS). Views and opinions expressed in messages posted are those of the author and do not necessarily reflect the official policy or position of NKS or any of its employees.
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