[PVFS-users] pvfs mounting problems with minimalistic kernel

[Rob Ross]

Hi Kaveh,

[ Pinging has been verified to work. ]

I would suggest that you try putting the pvfs-ping utility out on one of 
the nodes that isn't working.  You can then run it with:

  pvfs-ping -h 10.0.0.1 -p 3000 -f /pvfs-meta

This will attempt to connect to the mgr (and if that succeeds, to the 
iods).  This program has somewhat more helpful error messages, so it might 
help us figure out what is going on.  It may also just print out "server 
not responding" though; we'll see.

Do you have tcpdump on the server, and are you familiar with its usage?  
That might be a next step.

Thanks,

Rob

On Thu, 13 May 2004, Rob Ross wrote:

> Hi Kaveh,
> 
> Can you ping between those nodes ok?
> 
> Thanks,
> 
> Rob
> 
> On Sun, 9 May 2004, Kaveh Moallemi wrote:
> 
> > Hello, I'm having some problems with mounting pvfs .... I'm currently using 
> > pvfs-1.6.2 on linux-2.4.21 patched with bproc (3.2.6) on a 2 node test 
> > cluster.  On the server side (10.0.0.1) everything works just fine, I can 
> > start the mgr, iod and pvfsd programs and then mount /pvfs-meta without any 
> > problems.  On the client side however, I can install the pvfs.o module and 
> > run pvfsd but mounting fails:
> > 
> > 1) If I try:
> > $mount 10.0.0.1:/pvfs-meta /mnt/pvfs -t pvfs
> > I get:
> > (inode.c, 340): pvfs_super_iget crapped out at ll_pvfs_lookup
> > (inode.c, 196): pvfs_read_super aborting!
> > mount: Mounting 10.0.0.1:/pvfs-meta on /mnt/pvfs failed: Invalid argument
> > 
> > 2) If I try:
> > $mount.pvfs 10.0.0.1:/pvfs-meta /mnt/pvfs
> > I get:
> > Kernel does not support tcp: No such file or directory
> > mount.pvfs: server 10.0.0.1:3000 not responding, giving up
> > 
> > Of course I've configured the kernel with TCP support (BProc uses TCP and it 
> > works), so I really don't understand the error message.  I should mention 
> > that the client is diskless and thus uses a very minimalistic kernel.  I 
> > suspect that I'm missing something in the kernel configuration .... so I 
> > would greatly appreciate any suggestions!
> > 
> > By the way, I'm sure that there is nothing wrong with the server since I can 
> > mount pvfs from a third test machine (not diskless) on the same network.