On Thu, Apr 25, 2013 at 8:01 PM, Dyweni - Ceph-Devel <YS3fpFE2ykfB@xxxxxxxxxx> wrote: > Hi All (again), > > I'm specific interested in POSIX advisory locks... as referred to by > SQLite Version 3 (http://www.sqlite.org/lockingv3.html, section 6). > > I want to store a set of SQLite database files on a shared Ceph FS, in order > to coordinate the activities of a number of nodes. I need to make sure that > multiple nodes won't be stepping on each other and corrupting these database > files. > > > --- > Thanks, > Dyweni > > > > > On 2013-04-25 20:54, Dyweni - Ceph-Devel wrote: >> >> Hi All, >> >> I ran across Bug # 2825 (http://tracker.ceph.com/issues/2825) >> tonight. Is file locking still an issue in the latest stable release >> (0.60 / 0.61) ? I'd forgotten about this bug. I don't believe we've done any work on the POSIX locks since then, although that bug doesn't mention the kernel version in use and I believe you need both sufficiently new servers and kernels. Sadly I don't have the time to pull down that code and check out the current results. The locking code is *fairly* readable though, if anybody would like to check it out. The interfaces grew to be messier than I'd like but it is at least well-isolated from the other MDS invariants, if somebody wants to check it out. -Greg Software Engineer #42 @ http://inktank.com | http://ceph.com -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
