[Ocfs2-users] fcntl locking problem

Sunil Mushran sunil.mushran at oracle.com
Tue Nov 11 10:35:53 PST 2008

The fcntl() locking support in ocfs2 will work only with userspace
clustering. As in, not with the default o2cb clusterstack. Userspace
clustering is still a work in progress. We hope to have a working
solution in 2009 atleast for sles, (rh)el, fedora and opensuse.

zoltan.kiss at serverside.hu wrote:
> Hello,
> I have a problem about the new POSIX locking feature.
> I have tested this feature on this configuration:
> -Ubuntu server edition 8.10
> -kernel 2.6.28-rc4
> -ocfs2-tools version 1.4.1 (downloaded from git repo today)
> We use an old Clipper program in our company, and as far as i know the dbf
> database format uses byte range locking to handle concurrent database
> accesses.
> I'm wainting for fcntl() locks around 1-2 months in ocfs, because it's
> faster than gfs or gfs2, but i'm really need the fcntl locking support.
> I'm installed these versions today and if i launch the progam on one server
> then the performance, and the locking is great, but if i'm launched the
> program on other side (both on two machines) then my databases is
> corrupted, because the locks not working proper.
> Can anybody help me about that problem?
> Thanks for your help and sorry for my english.
> Best regards,
> Zoltan Kiss
> System administrator
> Bardi Auto Ltd.
> zoltan.kiss at serverside.hu
> zoltan.kiss at bardiauto.hu
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