Ubuntu :: Strange "nfs Server Not Responding Timed Out" On Workstartion?

Feb 23, 2010

I have set up nfs-kernel-server on my Debian Lenny server and nfs-common on my Ubuntu 9.10 workstation as described here. Everything is generally working just fine, except that every time, when I start my workstation from suspend-to-RAM after more than a couple of hours of suspension, I can not access the NFS-shares (nautilus or ls in a terminal just hangs), and /var/log/messages shows "nfs: server NAME-OF-SERVERnot responding, timed out".

The problem is definitely not the server, because all I need to do to get it working again, is "umount -f /mnt/NFS-SHARE" followed by "mount /mnt/NFS-SHARE", or just wait some time (around 10-15 minutes) and then everything is fine again. I always only suspend-to-RAM, I usually do not turn of the machine completely. I have no explanation for that issue, but it must have something to do with being in suspend-to-RAM for a certain time. Pretty weird!

Strangely I never had this problem with NFS shares from a server running the FreeBSD-based FreeNAS operating system. Should the NFS shares be unmounted before suspension, and mounted after resume? Can this be done automatically?

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I have setup a Postfix system under Ubuntu server and everything works fine but I have seen 2 mails that stayed queued deferred in my mailqueue.

They can't be send because I received this :

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Nov 4, 2010

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Port 22
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[code]....

BTW, ports forwarded on my firewall, checked and triple checked it.

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Code:

NOTE: synergys.cpp,500: started server
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[code]....

I dont think I usually get disconnected when doing other tasks. Mostly only when watching flash videos. Sometimes it doesnt automatically reconnect, and I have to kill synergys and restart it.

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Apr 30, 2011

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Last night did a shutdown -h +120 which I have done regularly without problems. Only difference was there were some updates to go on which I said Restart later to.

Now my NVIDIA driver is screwed - as in I can't get my dual screens working. I have tried: sudo nvidia-config as suggested but not sure what it means by restart X server - PC restarted? No difference.

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Apr 29, 2011

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fetchmail: POP3 connection to 202.137.236.11 failed: Connection timed out
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I am trying to connect but it can't.

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Code:
Delivery to the following recipient has been delayed:
root@example.com

[code]...

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alias_maps = hash:/etc/aliases
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[code]...

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Nov 11, 2009

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May 13, 2010

I have a box running, within this box I serve approx 18 sites. Starting few months ago. the memory usage seems to climbs up everyday. I've check my cron, and I don't have any cron that runs everyday (but hourly cron that only did checking external server's availability via wget). The only new thing that I've add was a backup script to dump mysql database, which occurs weekly. (I can post it's script if needed).

Here is my weekly memory chart [url]

And lately things are getting worse, everytime I did this:

Code:

At least one of my site returns with timeout. When I visit the site using my browser, the site is actually reachable but it takes about 20 seconds to load (my wget use timeout 10 seconds so it will surely returns with timeout). Each time one or two sites downs randomly. But about two-three small sites dominates - their chance to get slowed seems to be higher than the rest 15 sites.

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My box runs on CentOS release 5.4 (Final)

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Code:
sudo tcpdump -i vlan4 -n
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

[code]...

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code....

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There are 3 other servers that are running Debian 4 and are working fine.

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I tried to add more threads in /etc/sysconfig/nfs but it didn't help.

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Apr 6, 2010

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Mar 30, 2010

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Code:

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Dec 14, 2009

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Feb 25, 2011

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Code:
target prot opt source destination
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[code]....

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Feb 23, 2010

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Mar 17, 2009

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Jul 13, 2010

when I am run:

ssh -v "login"@"server"

I get:

OpenSSH_5.3p1 Debian-3ubuntu4, OpenSSL 0.9.8k 25 Mar 2009
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to server ["address"] port 22.
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Code:
prompt 0
label linux

[code]....

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Nov 15, 2010

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Code:
WARNING: Closing client 192.168.2.99 connection due to lifetime timeout

In this way it was disconnecting clients randomly. The problem resolves when I restart proxy server

Im sending my cache.log file


Code:
Last login: Mon Nov 15 12:37:29 2010 from 192.168.2.2
[root@localhost ~]# cat /var/log/squid/cache.log
2010/11/15 08:11:49| storeDirWriteCleanLogs: Starting...
2010/11/15 08:11:49| Finished. Wrote 57740 entries.

[Code]....

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Apr 24, 2009

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this i tried yesterday:did a cold boot to see if some update had problems and actually needed a reboot even if the updater didn't say, after it started the connection seemed to be open for a good while, and not untill this morning from a outside source the connection is droped again, not been on my comp nor logged on on the server today yet.the install only has on it what i got from the dvd, and as far as i know it has all the updates on it since 5.3 came out.my network is built up like this:

modem
|
firewall-switch-computers

[code]....

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