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Re: [Gluster-devel] posix-locks problem


From: Anand Avati
Subject: Re: [Gluster-devel] posix-locks problem
Date: Tue, 7 Aug 2007 22:57:08 +0530

Kevan,
 I just submitted a patch to fuse-devel which adds flock() support to fuse.
You could either wait for the next fuse release, or install glusterfs's
patched fuse (2.7.0-glfs3) which has that patch included.

thanks,
avati

2007/8/7, Kevan Benson <address@hidden>:
>
>
> Any consensus on whether flock support is planned for the future?  I seem
> to
> remember reading somewhere in the documentation that a native glusterfs
> client was being considered at some point in the future, which could make
> this feasible.
>
> On Monday 06 August 2007 09:27, Amar S. Tumballi wrote:
> > Thanks for pointing out the mistakes in wiki.. just corrected it.
> >
> > -amar
> >
> > On 8/6/07, Kevan Benson <address@hidden> wrote:
> > > On Sunday 05 August 2007 23:28, Vikas Gorur wrote:
> > > > What you're trying to do is use flock(2) locks. flock(2) locks are
> not
> > > > supported by FUSE. The lock requests will be handled by the kernel
> > > > itself and never reach FUSE, let alone GlusterFS.
> > > >
> > > > The posix-locks translator implements the fcntl(2) locking API.
> > > > fcntl(2) allows for more fine-grained locking, as it supports
> locking
> > > > of particular regions inside a file --- whereas flock(2) locks are
> on
> > > > the entire file.
> > > >
> > > > flock(2) and fcntl(2) locks can co-exist on Linux. There is
> absolutely
> > > > no interaction between them.
> > > >
> > > > In summary, if you want distributed file locks, you should use the
> > > > fcntl(2) API, not flock(2).
> > >
> > > Thanks.  Does that mean the the part of the FAQ that mentions flock
> along
> > > with
> > > fcntl is incorrect, or just mentioning a feature not supported _yet_?
> > >
> > >
> > >
> http://www.gluster.org/docs/index.php/GlusterFS_FAQ#How_is_locking_handle
> > >d.3F
> > >
> > > --
> > > - Kevan Benson
> > > - A-1 Networks
> > >
> > >
> > > _______________________________________________
> > > Gluster-devel mailing list
> > > address@hidden
> > > http://lists.nongnu.org/mailman/listinfo/gluster-devel
>
> --
> - Kevan Benson
> - A-1 Networks
>
>
> _______________________________________________
> Gluster-devel mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/gluster-devel
>



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