go build, flock, and NFS_BADSEQID

[Alan Somers]

Yeah, that makes sense to me.

On Mon, Mar 2, 2020 at 5:16 PM Rick Macklem <rmacklem at uoguelph.ca> wrote:

> Good to hear. For some reason, the IETF NFSv4 working group does a
> lot of work trying to get NFSv4.0 right.
> From my point of view, it is just a typical .0 release that was fixed by
> the .1
> release.
>
> Linux always uses the newest version supported by the server by default.
> Maybe I could get away with doing the same for FreeBSD?
> (For NFSv4 minor versions, not NFSv4 instead of NFSv3, which I think would
>  be a POLA violation.)
> What do you think?
>
> rick
>
> Thanks, rick
>
> ________________________________________
> From: Alan Somers <asomers at freebsd.org>
> Sent: Monday, March 2, 2020 7:04 PM
> To: Rick Macklem; freebsd-fs
> Subject: Re: go build, flock, and NFS_BADSEQID
>
> Yep.  Remounting with minorversion=1 fixed the problem.  Thanks!.
>
> On Mon, Mar 2, 2020 at 3:51 PM Rick Macklem <rmacklem at uoguelph.ca<mailto:
> rmacklem at uoguelph.ca>> wrote:
> Oh and avoid "soft,intr" options on the mount. Those are pretty much
> guaranteed to result in a BADSEQID sooner or later.
>
> rick
> ps: It's in the Bugs section of "man mount_nfs", but nobody reads that
> far;-)
>
> ________________________________________
> From: Alan Somers <asomers at freebsd.org<mailto:asomers at freebsd.org>>
> Sent: Monday, March 2, 2020 5:40 PM
> To: Rick Macklem
> Cc: freebsd-fs; Rick Macklem
> Subject: Re: go build, flock, and NFS_BADSEQID
>
> Is that a mount option?  Because it seems like I can't set it with "mount
> -u".  Do I need to completely unmount first?
>
> On Mon, Mar 2, 2020 at 3:28 PM Rick Macklem <rmacklem at uoguelph.ca<mailto:
> rmacklem at uoguelph.ca><mailto:rmacklem at uoguelph.ca<mailto:
> rmacklem at uoguelph.ca>>> wrote:
> Try "minorversion=1". The seqid stuff is NFSv4.0 specific and shouldn't
> be broken, but NFSv4.1 fixed all this in better ways.
>
> rick
>
> ________________________________________
> From: alan somers <asomers at gmail.com<mailto:asomers at gmail.com><mailto:
> asomers at gmail.com<mailto:asomers at gmail.com>>>
> Sent: Monday, March 2, 2020 2:31 PM
> To: freebsd-fs
> Cc: Rick Macklem
> Subject: go build, flock, and NFS_BADSEQID
>
> I'm trying to build a Go project with /usr/home mounted with NFSv4.  The
> server is running 12.0-RELEASE and the client is running 12.1-RELEASE.  But
> the build reliably fails because flock(2) returns EACCES.  Dtrace shows the
> cause is nfsrpc_advlock returning NFS_BADSEQID.  This sounds like an NFS
> bug (server, client, or both?  I'm not sure).  I'm not an NFS expert.  Is
> this something I should pursue, and would somebody please give me advise on
> how to debug further?
> -Alan
>