> On 05 Mar 2016, at 17:01, Eugene Grosbein <eu...@grosbein.net> wrote:
> 
> 05.03.2016 20:42, Dmitry Sivachenko пишет:
> 
>>> and to discover what version is broken. And show full mount command/option 
>>> set.
>> I already included mount flags from fstab in my original e-mail:
>> 
>> rw,bg,intr,soft
> 
> If that's only options you use, there is another workaround: add options
> rsize=1024,wsize=1024 to avoid possible packet reassemply/defragmentation
> related bugs.

I wonder how rsize=wsize=1024 will affect performance?  I have 10GBit network 
and I expect to achieve comparable throughput.


> 
> Again, error 4 is EINTR so you could disable both "soft" and "intr" options 
> for test.


"soft" is meaningless in such setup, because "file system calls will fail after 
retrycnt round trip timeout intervals" but "The default is a retry count of 
zero, which means to keep retrying forever".

If I understand "intr" correctly, it matters only when server becomes 
unresponsive, that is "server is not responding" message should be in my logs.  
But I have no such a message.


> Anyway, re-read mount_nfs(8) manual page, section BUGS before switch to NFSv4.

That is why I chose to use NFSv3, I thought it is more mature and stable 
implementation.

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