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Networking/Discussion/General/Network Lockup with ftp/List of Posts
Forum Topic - Network Lockup with ftp: (7 Items)
   
Update
Wade Hawkins(deleted)
08/24/2009 10:35 AM
post36518
Network Lockup with ftp   
I get an odd lock up on my imx31ads target when I try to ftp a particular binary onto its file system.  The system 
becomes unresponsive.  I can’t execute any commands through a high prio shell and networking is completely blocked.  I 
am having a hard time debugging what is going on since I can’t get any useful information from my target.  No cores are
 being produced so I assume its just a kernel lockup.   Here is an example of what happens.

Here is a pidin before I actually send the file.  My ksh is running at 80 and you can see the ftp daemon running at 10.
imx31ads-3480# pidin
     pid tid name               prio STATE       Blocked
       1   1 oc/boot/procnto-v6   0f READY
       1   2 oc/boot/procnto-v6 255r RECEIVE     1
       1   3 oc/boot/procnto-v6 255r RECEIVE     1
       1   5 oc/boot/procnto-v6 255r RECEIVE     1
       1   6 oc/boot/procnto-v6  10r RECEIVE     1
       1   7 oc/boot/procnto-v6  10r RECEIVE     1
       1   8 oc/boot/procnto-v6  10r RECEIVE     1
       1   9 oc/boot/procnto-v6  80r RECEIVE     1
       1  10 oc/boot/procnto-v6  10r RECEIVE     1
       1  11 oc/boot/procnto-v6  10r RECEIVE     1
       1  12 oc/boot/procnto-v6  80r RUNNING
       1  13 oc/boot/procnto-v6  80r RECEIVE     1
       2   1 c/boot/devc-sermx1  24r READY
       3   1 proc/boot/slogger   10r RECEIVE     1
       4   1 proc/boot/io-pkt    21r SIGWAITINFO
       4   2 proc/boot/io-pkt    21r READY
       4   3 proc/boot/io-pkt    21r RECEIVE     15
   16389   1 proc/boot/fs-nfs2   10r RECEIVE     1
   16389   2 proc/boot/fs-nfs2   80r RECEIVE     1
   16389   3 proc/boot/fs-nfs2   80r RECEIVE     1
   16389   4 proc/boot/fs-nfs2   10r RECEIVE     1
   16389   5 proc/boot/fs-nfs2   10r RECEIVE     1
   20486   1 proc/boot/fs-nfs2   10r RECEIVE     1
   20486   2 proc/boot/fs-nfs2   10r RECEIVE     1
   20486   3 proc/boot/fs-nfs2   10r RECEIVE     1
   20486   4 proc/boot/fs-nfs2   10r RECEIVE     1
   20486   5 proc/boot/fs-nfs2   80r RECEIVE     1
   24583   1 usr/sbin/dumper     10r RECEIVE     1
   24584   1 usr/bin/portmap     10r SIGWAITINFO
   24586   1 sbin/devc-pty       10r RECEIVE     1
   24587   1 usr/sbin/inetd      10r SIGWAITINFO
   28681   1 usr/sbin/qconn      10r SIGWAITINFO
   28681   2 usr/sbin/qconn      10r CONDVAR     (0x1247a8)
   28681   3 usr/sbin/qconn      10r RECEIVE     1
   28681   4 usr/sbin/qconn      10r RECEIVE     3
   45069   1 sbin/pipe           10r SIGWAITINFO
   45069   2 sbin/pipe           10r RECEIVE     1
   45069   3 sbin/pipe           80r RECEIVE     1
   45069   4 sbin/pipe           10r RECEIVE     1
   57358   1 sbin/devc-pty       10r RECEIVE     1
   65551   1 sbin/mq             10r RECEIVE     1
   81936   1 sbin/mqueue         10r RECEIVE     1
  106508   1 bin/ksh             80r SIGSUSPEND
  151569   1 usr/sbin/ftpd       10r REPLY       4
  155666   1 bin/pidin           80r REPLY       1

From my Neutrino host I send the binary and back in my shell I try to execute pidin to see what’s happening and this is
 what I see after about 2 mins of waiting for a prompt.
imx31ads-3480# pidin
ksh: pidin: cannot execute - Host is down
imx31ads-3480#

My host Neutrino/linux 642 M2
My target imx31ads 642M2

Any suggestions for fixing / debugging this issue?
Attachment: Text memset-chk.x4 80.81 KB
Andrew Boyd(deleted)
08/24/2009 10:43 AM
post36519
RE: Network Lockup with ftp   
What network driver are you running?  Especially
if you start the driver with the verbose option, 
is there anything in the sloginfo before the hang?  
What does the nicinfo look like?

If you can, try to get a 

  # top -p 255

running before you do the ftp command.

--
aboyd
Linda Deng(deleted)
08/24/2009 10:58 AM
post36522
Re: RE: Network Lockup with ftp   
Is fs-nfs2 must running for your file transfer?  6.4.2 M2 fs-nfs2 seems have problem on file lock. I have filed a fsys 
pr70721.
Wade Hawkins(deleted)
08/24/2009 11:06 AM
post36525
RE: RE: Network Lockup with ftp   
Ya actually it is.  I just checked and your right I am seeing some file
locks in place while this process is going on.  I will give this a shot
with all my binaries embedded with in the image.

-----Original Message-----
From: Linda Deng [mailto:community-noreply@qnx.com] 
Sent: August-24-09 10:59 AM
To: general-networking
Subject: Re: RE: Network Lockup with ftp

Is fs-nfs2 must running for your file transfer?  6.4.2 M2 fs-nfs2 seems
have problem on file lock. I have filed a fsys pr70721.



_______________________________________________

General
http://community.qnx.com/sf/go/post36522
Wade Hawkins(deleted)
08/24/2009 1:32 PM
post36556
Re: RE: RE: Network Lockup with ftp   
Once i remove the fs-nfs mounts from the situation everything works correctly.  Linda can I have the PR number you filed
 on this issue?

-Wade
Linda Deng(deleted)
08/24/2009 1:33 PM
post36557
Re: RE: RE: Network Lockup with ftp   
pr70721
Sean Boudreau(deleted)
08/25/2009 10:51 AM
post36628
Re: RE: RE: Network Lockup with ftp   
On Mon, Aug 24, 2009 at 01:32:25PM -0400, Wade Hawkins wrote:
> Once i remove the fs-nfs mounts from the situation everything works correctly.  Linda can I have the PR number you 
filed on this issue?

That issue is now fixed; however I can't imagine how
it would cause the symptoms you describe.  I'd be
interested if the HEAD nfs client caused similiar
issues.

Thanks,

-seanb

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