On Fri, Feb 18, 2011 at 09:17:56AM +0200, Ciprian Pinzaru wrote:
> 
> Hello,
> I have a problem with a NFS server.
> When I try to write from a NFS client just write  a volume of information equal
> with the  free RAM form NFS server and gives the next error:
> 
>  [root@gs-27 fizica]# dd if=/dev/zero of=32G.img bs=1024k count=32768
> dd: writing `32G.img': Input/output error
> 6632+0 records in
> 6631+0 records out
> 6953107456 bytes (7.0 GB) copied, 270.222 seconds, 25.7 MB/s
> While the server RAM is exhausted:
> ramona:/storage/fizica # free -m
>              total       used       free     shared    buffers     cached
> Mem:          8000       7947         53          0         86       7575
> -/+ buffers/cache:        285       7714
> Swap:        10236          0      10236

The server RAM isn't exhausted here -- just being used for cache as
you'd expect (note that no swap is in use).

> 
> We tested the storage witch is connected directly to the NFS server:
> ramona:/storage/fizica # dd if=/dev/zero of=32G.img bs=1024k count=32768
> 32768+0 records in
> 32768+0 records out
> 34359738368 bytes (34 GB) copied, 208.834 s, 165 MB/s
> And is ok.
> 
> Could you help me to resolve this problem?
> Thanks
> 

I'm curious about the client.  Can you tell us a bit more?  I wonder if
we've got a 32-bit thing going on here...

Ray