Date: Tue, 12 Nov 2002 20:00:35 -0600 From: Dan Nelson <dnelson@allantgroup.com> To: Darlene Choontanom X45478 BSYS <darlene@water.rsc.raytheon.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: fcntl(xx, F_SETLK64, zz) ?? Message-ID: <20021113020035.GA4932@dan.emsphone.com> In-Reply-To: <200211130016.QAA07509@nomads.rsc.raytheon.com> References: <200211130016.QAA07509@nomads.rsc.raytheon.com>
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In the last episode (Nov 12), Darlene Choontanom X45478 BSYS said:
> Background: I'm running FreeBSD 4.4 on a file server we set up
> earlier this year in the hopes of relieving some of the load from our
> Solaris server. Currently we have mostly Sun clients, and a few
> Redhat clients.
>
> Problem: one of the big CAD applications we run hangs if a) it is
> in- stalled on the FreeBSD server, or b) if any of the user accounts
> that call it is located on the FreeBSD machine.
>
> After banging our heads into various different walls over a couple of
> months, we narrowed it down to the fact that this application makes a
> lot of (unnecessary?) NFS file locking calls.
>
> >From Sun clients, it hangs on the call:
>
> fcntl(6, F_SETLK64, 0xFFBEA3A8) (sleeping...)
>
> >From Redhat clients, it hangs on the call:
>
> fcntl64(5, F_SETLK, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0}) = -1 EACCES (Permission denied)
>
> We did talk to the CAD vendor about this, and they swear they've removed
> all NFS file locking. However, there seem to be a few that they've missed.
> Is this/are these options/commands supported anywhere under FreeBSD, and if
> not, could it?
Try enabling the locking daemons on the server by adding these lines to
rc.conf and rebooting. Note that on FreeBSD 4.* this only provides
server-side locking (if the machine tries to lock a remote NFS file it
will always succeed immediately), but that seems to be all you need
anyway.
rpc_lockd_enable="YES"
rpc_statd_enable="YES"
You can test to see if this will fix your proglem without rebooting by
running rpc.statd and rpc.lockd, then running your CAD program again.
--
Dan Nelson
dnelson@allantgroup.com
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