[PVFS-users] creating file .........

[Rob Ross]

Hi,

The magic number is a value placed in packets to give servers some 
indication that the packet is actually one meant for it.  There is a 
separate value that indicates the release number, and is used to detect 
mismatches between versions.

Has this just started happening on a volume that has been in use for some 
time, or have you just installed and are seeing this problem?

Where do you get that message?  On the client I assume?  Please check the 
iolog files on your I/O servers for errors too; I'm guessing there will be 
something useful in there.

Regards,

Rob

On Thu, 22 Apr 2004, Mahesh Salunkhe wrote:

> Hello !
>     My pvfs version is 1.6.0.
>   My mgr node also acts as a client.
>   When I create a file using
>  /usr/local/bin/pvfs-mkfile -K -f /pvfs/mkf1 -s 30
>  on my mgr node ,it creates the file with proper size.
> But when i use the same command on some other client
> node,a file gets created but with size 0 byres & I get
> a message :
>   >   do_job:IOD_MAGIC_NR does not match
> >   do_jobs:do_job failed : invalid argument
> >   write (2):invalid argument.
> 
>   I've installed tthe same version on all machines.And
> ,basically , what is this magic number used for?
> 
> Thanks in advance.
> 
> Mahesh