[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: [Linux-cluster] gfs2, kvm setup

J. Bruce Fields wrote:
On Wed, Jul 09, 2008 at 04:50:14PM +0100, Christine Caulfield wrote:
J. Bruce Fields wrote:
On Wed, Jul 09, 2008 at 09:51:02AM +0100, Christine Caulfield wrote:
Steven Whitehouse wrote:

On Tue, 2008-07-08 at 18:15 -0400, J. Bruce Fields wrote:
On Mon, Jul 07, 2008 at 02:49:28PM -0400, bfields wrote:
On Mon, Jul 07, 2008 at 10:48:28AM -0500, David Teigland wrote:
On Sun, Jul 06, 2008 at 05:51:05PM -0400, J. Bruce Fields wrote:
-	write(control_fd, in, sizeof(struct gdlm_plock_info));
+	write(control_fd, in, sizeof(struct dlm_plock_info));
Gah, sorry, I keep fixing that and it keeps reappearing.

Jul  1 14:06:42 piglet2 kernel: dlm: connect from non cluster node
It looks like dlm_new_workspace() is waiting on dlm_recoverd, which is
in "D" state in dlm_rcom_status(), so I guess the second node isn't
getting some dlm reply it expects?
dlm inter-node communication is not working here for some reason.  There
must be something unusual with the way the network is configured on the
nodes, and/or a problem with the way the cluster code is applying the
network config to the dlm.

Ah, I just remembered what this sounds like; we see this kind of thing
when a network interface has multiple IP addresses, and/or routing is
configured strangely.  Others cc'ed could offer better details on exactly
what to look for.
OK, thanks!  I'm trying to run gfs2 on 4 kvm machines, I'm an expert on
neither, and it's entirely likely there's some obvious misconfiguration.
On the kvm host there are 4 virtual interfaces bridged together:
I ran wireshark on vnet0 while doing the second mount; what I saw was
the second machine opened a tcp connection to port 21064 on the first
(which had already completed the mount), and sent it a single message
identified by wireshark as "DLM3" protocol, type recovery command:
status command.  It got back an ACK then a RST.

Then the same happened in the other direction, with the first machine
sending a similar message to port 21064 on the second, which then reset
the connection.

That's a symptom of the "connect from non-cluster node" error in the DLM.
I think I am getting a message to that affect in my logs.

It's got a connection from an IP address that is not known to cman. So it closes it as a spoofer
OK.  Is there an easy way to see the list of ip addresses known to cman?

  cman_tool nodes -a

will show you all the nodes and their known IP addresses

piglet2:~# cman_tool nodes -a
Node  Sts   Inc   Joined               Name
   1   M    376   2008-07-09 12:30:32  piglet1
Addresses: 2 M 368 2008-07-09 12:30:31 piglet2 Addresses: 3 M 380 2008-07-09 12:30:33 piglet3 Addresses: 4 M 372 2008-07-09 12:30:31 piglet4 Addresses:
These addresses are correct (and are the same addresses that show up in the
packet trace).

I must be overlooking something very obvious....

Hmm, very odd.

Are those IP addresses consistent across all nodes in the cluster ?



[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]