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Today's Topics:
1. Re: pvfs2 server bind problem (Phil Carns)
----------------------------------------------------------------------
Message: 1
Date: Mon, 23 Jan 2012 13:42:31 -0500
From: Phil Carns<ca...@mcs.anl.gov>
Subject: Re: [Pvfs2-developers] pvfs2 server bind problem
To: pvfs2-developers@beowulf-underground.org
Message-ID:<4f1daa17.2080...@mcs.anl.gov>
Content-Type: text/plain; charset="iso-8859-1"
Hi Dimos,
By default (unless you use the TCPBindSpecific flag in the conf file,
which you are not) the server should just try to bind to listen on
*:3334, no matter what hostname or IP address you put in the conf file.
In other words, it ignores the hostname and just listens for connections
on any ip address for port 3334. Later on when the servers are actually
communicating it is important to have the right IP addresses of course,
but just to start a server it doesn't much matter. Oddly, I think the
error message that you are posting matches what one would see if you
tried to bind to a specific (but not existent) IP address. Maybe there
are other cases that can trigger the error. For a sanity check maybe
you could post the output of "ifconfig" and make sure that the 10.10.8.2
interface is up (because you will surely want it later anyway), but I've
never seen mismatched IP address on a PVFS server cause a problem
without TCPBindSpecific.
This means that there is probably some other problem going on here that
is unrelated to how you have specified the IP address or alias in the
conf file, I think?
One thing that you could try to do is install "nc" if it isn't installed
already, and try running "nc -l 3334". nc is a generic tcp
server/client program, and depending on whether it will successfully
listen on 3334 or not will tell you if there is a system-wide problem or
a pvfs-specific problem. Make sure to run this as the same user that
you use to launch the pvfs2-server process.
... and finally, if the above steps don't turn up anything, you can try
the following:
strace pvfs2-server /etc/pvfs2-fs.conf -d -a 10.10.8.2>& foo.txt
grep bind foo.txt
You should see a line that looks something like this:
bind(3, {sa_family=AF_INET, sin_port=htons(3334),
sin_addr=inet_addr("0.0.0.0")}, 16) = -1 EADDRINUSE (Address already
in use)
... which will indicate exactly what port and addr are being used when
it actually tries to bind the socket, and also confirm what errno value
it is getting.
good luck!
-Phil
On 01/23/2012 09:37 AM, Dimokritos Stamatakis wrote:
Of course!
I attach the conf.
Many thanks,
Dimos.
Send me your pvfs2-fs.conf file and let me take a look at it. I will
also try using IP addresses and see what happens.
Becky
On Mon, Jan 23, 2012 at 9:30 AM, Becky Ligon<li...@omnibond.com
<mailto:li...@omnibond.com>> wrote:
You must also use different ports if you are bringing up multiple
servers on the same machine (or IP address).
Becky
On Mon, Jan 23, 2012 at 9:27 AM, Becky Ligon<li...@omnibond.com
<mailto:li...@omnibond.com>> wrote:
Good. Then, 10.10.8.2 must be the hostname on that machine.
What does the "hostname" command show?
Becky
On Mon, Jan 23, 2012 at 9:22 AM, Dimokritos Stamatakis
<dimsta...@gmail.com<mailto:dimsta...@gmail.com>> wrote:
Hello and thanks for your answer.
Actually my pvfs2-fs.conf contains this information about
aliases:
<Aliases>
Alias 10.10.8.2 tcp://10.10.8.2:3334
</Aliases>
So I should start the server like this, right?
pvfs2-server /etc/pvfs2-fs.conf -d -a 10.10.8.2
10.10.8.2 is the local IP address of the VM.
By the way I am able to start another process that binds
to 10.10.8.2 and 3334 port and waits for tcp connections.
That's very strange.
Many thanks,
Dimos.
The -a options refers to the alias assigned in your
pvfs2-fs.conf. Example:
<Aliases>
Alias pvfs001 tcp://pvfs001-myri0:3334
</Aliases>
The -a option refers to pvfs001 in the above example.
Hope this helps!
Becky
On Mon, Jan 23, 2012 at 8:08 AM, Dimokritos Stamatakis
<dimsta...@gmail.com<mailto:dimsta...@gmail.com>> wrote:
Hello all,
I have a problem while trying to run pvfs2 on a
eucalyptus cloud.
We have tested it to physical machines and it works
perfectly, but when we move to the cloud there is a
bind failure message. I try to run the I/O server
with this command:
pvfs2-server /etc/pvfs2-fs.conf -d -a 10.10.8.2
and I get these messages
[S 01/23 12:45] PVFS2 Server on node 10.10.8.2
version 2.8.1 starting...
LINE 1777 per-collection enviroment!!
Using cache style shm
//pvfs2-storage-space/1375f222/
[E 01/23 12:45] (null): can't bind socket to
listening address: Cannot assign requested address
LINE 1777 per-collection enviroment!!
[E 01/23 12:45] Error adding handle range
3-4611686018427387904,4611686018427387905-9223372036854775806
to filesystem pvfs2-fs
[E 01/23 12:45] Error: Could not initialize server
interfaces; aborting.
[E 01/23 12:45] Error: Could not initialize server;
aborting.
Segmentation fault
It says it cannot bind socket to listening
address... I have tested many applications before
and they can bind normally to this private address
(10.10.8.2) .
So what is an explanation you can guess??
I leave the default parameters at the configuration
file, except the I/O hostname and metadata hostname
where I put 10.10.8.2.
Many thanks,
Dimos.
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--
Becky Ligon
OrangeFS Support and Development
Omnibond Systems
Anderson, South Carolina
-- Becky Ligon
OrangeFS Support and Development
Omnibond Systems
Anderson, South Carolina
--
Becky Ligon
OrangeFS Support and Development
Omnibond Systems
Anderson, South Carolina
--
Becky Ligon
OrangeFS Support and Development
Omnibond Systems
Anderson, South Carolina
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