[Gluster-devel] posix-locks problem
Amar S. Tumballi
amar at zresearch.com
Mon Aug 6 16:27:45 UTC 2007
Thanks for pointing out the mistakes in wiki.. just corrected it.
On 8/6/07, Kevan Benson <kbenson at a-1networks.com> 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
> fcntl is incorrect, or just mentioning a feature not supported _yet_?
> - Kevan Benson
> - A-1 Networks
> Gluster-devel mailing list
> Gluster-devel at nongnu.org
Engineer - Gluster Core Team
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