Weird Linux - FreeBSD/ZFS NFSv4 interoperability problem

[Josh Paetzel]

On Sep 12, 2010, at 7:00 PM, Rick Macklem <rmacklem at uoguelph.ca> wrote:

>> 
>> root at jester1d / ->mount -t nfs -o wsize=65536,rsize=65536
>> servant.ixsystems.com:/a/isos /mnt
>> root at jester1d / ->cd /mnt
>> root at jester1d /mnt ->dd if=PCBSD8-STABLE-20100420-x64-DVD.iso
>> of=/dev/null
>> bs=1m
>> 3344+1 records in
>> 3344+1 records out
>> 3507386368 bytes transferred in 34.562502 secs (101479528 bytes/sec)
>> 
>> root at jester1d /mnt ->cd ..
>> root at jester1d / ->umount /mnt
>> root at jester1d / ->mount -t newnfs -o nfsv3,rsize=65536,wsize=65536
>> servant.ixsystems.com:/a/isos /mnt
>> root at jester1d / ->cd /mnt
>> root at jester1d /mnt ->dd if=PCBSD8-STABLE-20100420-x64-DVD.iso
>> of=/dev/null
>> bs=1m
>> 345+0 records in
>> 345+0 records out
>> 361758720 bytes transferred in 46.191718 secs (7831679 bytes/sec)
>> 
>> The first run hits network limits.
>> 
> Hmm, the newnfs case seems to have terminated prematurely. That's a
> different problem than the others seemed to report, but you definitely
> have a slow read rate.
> 
> Could you by any chance run the newnfs test again and capture a "ps axHl"
> on the client (I'm hoping that will hint at where the threads are sleeping).
> 
> Thanks for doing the test, rick
> 

I'll do that soon. The premature end was me doing ctrl-c. I ran it a couple times to ensure it was repeatable. 

Thanks, 

Josh Paetzel