Stackable file systems and NFS

[Rajat Sharma]

Try mounting with noac nfs mount option to disable attribute caching.

ac / noac

"Selects whether the client may cache file attributes. If neither
option is specified (or if ac is specified), the client caches file
attributes."

-Rajat

On Tue, Aug 14, 2012 at 3:51 PM, Mulyadi Santosa
<mulyadi.santosa at gmail.com> wrote:
>
> Hi Ranjan...
>
> On Tue, Aug 14, 2012 at 5:10 PM, Ranjan Sinha <rnjn.sinha at gmail.com> wrote:
> > For now, /etc/export file has the following setting
> > *(rw,sync,no_root_squash)
>
> hm, AFAIK that means synchronous method is selected. So,
> theoritically, if there is no further data, the other end of NFS
> should just wait.
>
> Are you using blocking or non blocking read, btw? Sorry, i am not
> really that good reading VFS code...
>
> > 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
>
> hm, not sure, maybe in your case, read and write buffer should be
> reduced so any new data should be transmitted ASAP. I was inspired by
> bufferbloat handling, but maybe I am wrong here somewhere....
>
>
> --
> regards,
>
> Mulyadi Santosa
> Freelance Linux trainer and consultant
>
> blog: the-hydra.blogspot.com
> training: mulyaditraining.blogspot.com
>
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