Please file bug report(s) with detailed information how to reproduce the
problem(s).

Thanks.

On Wed, Jan 28, 2015 at 01:58:21PM -0600, Schweiss, Chip via illumos-discuss 
wrote:
> I've been through a lot of problems with this to and ultimately gave up on
> the NFSv3 lock manager in Illumos and switched everything to NFSv4.
> 
> There are several problems.  I diagnosed them using tcpdump and Wireshark.
> 
>    1. The locking manager uses different ports than the Linux firewall
>    expects for NFS and ends up blocking connections.   The only solution I
>    found was to open all ports to the NFS server IP on the Linux NFS client.
>    2. The lock manager holds on to locks longer than it should.  It appears
>    to have a 30 second cycle on releasing lock.  This causes all locks to get
>    used up really fast.
>    3. And of course the well know problem of the lock manager not starting
>    because a client is no longer accessible.
> 
> The easiest trigger I've found is run a bunch of csh processes that cause a
> logon.  The .history file in the user's home directory will get locked lots
> of times and consume all the locks.  We saw this from our processing
> cluster immediately when the new lock manger was introduced.
> 
> -Chip
> 
> On Wed, Jan 28, 2015 at 1:19 PM, Youzhong Yang via illumos-discuss <
> [email protected]> wrote:
> 
> > A few months ago, we were hit by an issue in rpc module. When it happens,
> > lots of reserved ports are in BOUND state, so nlockmgr will refuse lock
> > request.
> >
> > If 'netstat -an | grep BOUND | wc -l' returns a large number, then it's
> > the same issue as we had.
> >
> >
> >
> > On Wed, Jan 28, 2015 at 2:09 PM, Marcel Telka via illumos-discuss <
> > [email protected]> wrote:
> >
> >> On Wed, Jan 28, 2015 at 02:07:20PM -0500, Dan McDonald wrote:
> >> >
> >> > > On Jan 28, 2015, at 2:02 PM, Marcel Telka via illumos-discuss <
> >> [email protected]> wrote:
> >> > >
> >> > > Note: NexentaStor 4 uses the same new NLM implementation as recent
> >> illumos
> >> > > does.
> >> >
> >> > Is there anything there that needs to be upstreamed?
> >>
> >> No. Nexenta's NLM is in sync with illumos (from top of my head, but I
> >> believe
> >> I'm right).
> >>
> >> --
> >> +-------------------------------------------+
> >> | Marcel Telka   e-mail:   [email protected]  |
> >> |                homepage: http://telka.sk/ |
> >> |                jabber:   [email protected] |
> >> +-------------------------------------------+
> >>
> >>
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-- 
+-------------------------------------------+
| Marcel Telka   e-mail:   [email protected]  |
|                homepage: http://telka.sk/ |
|                jabber:   [email protected] |
+-------------------------------------------+


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