Stackable file systems and NFS

Hi Mulyadi,

On Tue, Aug 14, 2012 at 3:33 PM, Mulyadi Santosa
[off-list ref] wrote:

Hi Ranjan...

On Tue, Aug 14, 2012 at 2:53 PM, Ranjan Sinha [off-list ref] wrote:

quoted

Hi,

We are writing a stackable file system. While testing this on NFS we
came across a situation where sometimes we are getting ASCII NUL bytes
in the buffer read from the lower file system (NFS in this case). This
happens when NFS client 1 is writing to a file and NFS client 2 is
continuously reading from the same file.

are you using synchronous or asynchronous mode in the NFS?

For now, /etc/export file has the following setting
*(rw,sync,no_root_squash)

On client side we have not specified any options explicitly. This is
from /proc/mounts entry
rw,vers=3,rsize=32768,wsize=32768,hard,proto=tcp,timeo=600,retrans=2,sec=sys

-- 
Regards,
Ranjan