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Date:      Tue, 6 Mar 2018 18:14:01 +0000
From:      NAGY Andreas <Andreas.Nagy@frequentis.com>
To:        Rick Macklem <rmacklem@uoguelph.ca>, "'freebsd-stable@freebsd.org'" <freebsd-stable@freebsd.org>
Subject:   =?iso-8859-1?Q?Re:_NFS_4.1_RECLAIM=5FCOMPLETE_FS=A0failed_error_in_combin?= =?iso-8859-1?Q?ation_with_ESXi_client?=
Message-ID:  <2feda1e2-16d5-43b5-98eb-dcc71cc67c6f@frequentis.com>
In-Reply-To: <YQBPR0101MB1042040D2BFB3681E940D271DDDA0@YQBPR0101MB1042.CANPRD01.PROD.OUTLOOK.COM>
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Okay, that was the main reason for using NFS 4.1.
Is it planned to implement it, or is the focus on pNFS?

Thanks,
Andi


________________________________
Von: Rick Macklem <rmacklem@uoguelph.ca>
Gesendet: 05.03.2018 11:49 nachm.
An: NAGY Andreas; 'freebsd-stable@freebsd.org'
Betreff: Re: NFS 4.1 RECLAIM_COMPLETE FS failed error in combination with E=
SXi client

Nope, that isn't supported, rick
(Hope no one is too upset by a top post.)

________________________________________
From: NAGY Andreas <Andreas.Nagy@frequentis.com>
Sent: Monday, March 5, 2018 8:22:10 AM
To: Rick Macklem; 'freebsd-stable@freebsd.org'
Subject: RE: NFS 4.1 RECLAIM_COMPLETE FS failed error in combination with E=
SXi client

Thanks, I am actually compiling with both patches.

I try now to get NFS 4.1 multipathing working. So I have now two connection=
 on different subnets between the ESXi host and the FreeBSD host with expor=
ts for the same mountpoint on both subnets.
Now I get the following errors in the vmkernel.log:
2018-03-05T13:06:07.488Z cpu10:66503)WARNING: NFS41: NFS41_Bug:2361: BUG - =
Invalid BIND_CONN_TO_SESSION error: NFS4ERR_NOTSUPP

Is there session trunking available in the FreeBSD NFS41 implementation?

Br,
andi

-----Original Message-----
From: Rick Macklem [mailto:rmacklem@uoguelph.ca]
Sent: Montag, 5. M=E4rz 2018 02:16
To: NAGY Andreas <Andreas.Nagy@frequentis.com>; 'freebsd-stable@freebsd.org=
' <freebsd-stable@freebsd.org>
Subject: Re: NFS 4.1 RECLAIM_COMPLETE FS failed error in combination with E=
SXi client

NAGY Andreas wrote:
[stuff snipped]
>In the source I saw nfs_async =3D 0; is it right that NFS will work in asy=
nc mode if I >compile the kernel with nfs_async =3D 1?
>
>I know the risk of running it async, but is it not the same risk having th=
e datastore >connected via iSCSI which standard is also not sync?
If you want to use it, you can just set it by setting the sysctl vfs.nfsd.a=
sync=3D1.
- If the server crashes/reboots you can lose data. Also, after the reboot, =
the
  client will only see an temporarily unresponsive server and will not have=
 any
  indication of data loss.
  (I am not familiar with iSCSI, so I can't comment on how safe that is.)
- If you are using ZFS, there is also a ZFS config (sync=3Ddisabled). I'm n=
ot a ZFS
  guy, so I don't know anything more, but I'm sure others reading this list=
 can
  tell you how to set it.
[more stuff snipped]
>So far I did not see any issue with the mount. Only in the vmkernel.log th=
ere are >often following entrees:
>WARNING: NFS41: NFS41ValidateDelegation:608: Server returned improper
>>reason for no delegation: 2
The attached patch *might* get rid of these, although I don't think it matt=
ers much, since it is just complaining about the "reason" the server return=
s for not issuing a delegation (issuing delegations is entirely at the disc=
retion of the server and is disabled by default).
[more stuff snipped]
Good luck with it, rick



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