Re: Wheezy "NFSv4 callback reply buffer overflowed"

[Rainer Stumbaum <rainer.stumbaum@boerse-go.de>]

Hi Javier,

nfs.v4.read_delegation       on         (value might be overwritten in takeover)

nfs.v4.write_delegation      off        (value might be overwritten in takeover)

Did you try disabling nfs.v4.read_delegation?

No, since we only recently changed from NFSv3 to NFSv4 and with v3 were using mount option nocto on 99% of the mounts for performance. We have currently no idea what implications we would have if we turn off read delegation.

Is there any way to estimate/measure the performance improvements achieved by using read delegation as in our current setup?

From looking through the source the message seems to be just a warning, right?

Thanks

Rainer