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Date:      Sat, 30 Sep 2017 17:39:10 -0400
From:      Michael Butler <imb@protected-networks.net>
To:        Rick Macklem <rmacklem@uoguelph.ca>, freebsd-current <freebsd-current@freebsd.org>
Cc:        "rmacklem@freebsd.org" <rmacklem@freebsd.org>
Subject:   Re: Can't NFS mount ZFS volume
Message-ID:  <65feb444-3265-b9bc-3d4d-d57b125513d3@protected-networks.net>
In-Reply-To: <YQXPR0101MB0997D0BB798ADFE4283E2635DD7F0@YQXPR0101MB0997.CANPRD01.PROD.OUTLOOK.COM>
References:  <4cbb6150-0fcc-5393-846f-309e19cfb0ea@protected-networks.net> <YQXPR0101MB0997D0BB798ADFE4283E2635DD7F0@YQXPR0101MB0997.CANPRD01.PROD.OUTLOOK.COM>

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I have no idea why but using ..

sudo /sbin/mount vm01:/usr/local/exports/ /mnt

  .. instead of ..

sudo /sbin/mount -t nfs vm01:/usr/local/exports/ /mnt

  .. works; sorry for the noise,

	imb

On 09/30/17 16:25, Rick Macklem wrote:
> I have only done two NFS commits within that range.
> 1 - A trivial one that adds two new arguments always specified as 0,
>       which has no change in semantics.
> 2 - One that only affects NFSv4 during dismount, so it shouldn't affect
>       an NFSv3 mount.
> 
> Some things to try:
> - get rid of rpc.statd and rpc.lockd and do the mount with the "nolockd"
>    option
> - capture packets during the mount and look at them in wireshark, to
>    see what is going on the wire.
> - see if there are any patches applied to your net interface driver during
>    that commit rev. range
> - if you have any kind of firewall setup, get rid of that and see if that
>     helps
> 
> Good luck with it, rick
> ________________________________________
> From: Michael Butler <imb@protected-networks.net>
> Sent: Friday, September 29, 2017 9:09:35 PM
> To: freebsd-current
> Cc: rmacklem@freebsd.org
> Subject: Can't NFS mount ZFS volume
> 
> Both client and server have been upgraded from SVN r324033 to r324089
> 
> Now I can't mount a ZFS dataset over NFS :-(
> 
> imb@toshi:/home/imb> sudo /sbin/mount -t nfs vm01:/usr/local/exports/ /mnt
> 
> imb@toshi:/home/imb> mount
> /dev/ada0s3a on / (ufs, local, soft-updates)
> devfs on /dev (devfs, local, multilabel)
> procfs on /proc (procfs, local)
> linprocfs on /usr/compat/linux/proc (linprocfs, local)
> linsysfs on /usr/compat/linux/sys (linsysfs, local)
> vm01:/usr/local/exports on /mnt (nfs)
> 
> imb@toshi:/home/imb> sudo ls -l /mnt
> ls: /mnt: Input/output error
> 
> The server shows the mount as being registered ..
> 
> imb@vm01:/home/imb> showmount -a
> All mount points on localhost:
> toshi.auburn.protected-networks.net:/usr/local/exports
> 
> It takes some time to complete an umount request but it does complete,
> 
> Any thoughts?
> 
>          imb
> 




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