Re: [MooseFS-Users] Global file lock feature

[Aleksander W. <ale...@mo...>]

Hello!

Global locking support has been added in moosefs 3.0. There are two
locking mechanisms supported by this version: "posix_locks"
(ioctl,lockf) and "bsd_locks" (flock).

Global locking also needs to be supported by your version of fuse
library and kernel.
"posix_locks" were introduced in fuse version 2.6 and "bsd_locks" were
introduced in fuse version 2.9.

Also your kernel part of fuse has to support this mechanism. We mainly
tested in on Linux with kernel 3.13 (ubuntu 14.04).
As I remember there are no support for locking in other operating systems.

Be aware that there were bug in moosefs up to version 3.0.20 in "flock"
locking mechanism, so if you want to use "flock" be sure that you have
latest moosefs version (at least 3.0.21).

Best regards
Aleksander Wieliczko
Technical Support Engineer
MooseFS.com <moosefs.com>

On 05/15/2015 11:21 AM, Alexey Tsivinsky wrote:
> Good day!
>
> Please, advise, how i can eneble global file locking on MooseFS 20.0.60 
> setup, and how i can check it?
>
> Thanks.
>