[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [BUG] Xen Remus, DRBD Protocol D and old Linux kernels
Just adding the Remus maintainers to the CC. On Fri, 2016-01-15 at 15:26 -0300, Pato SÃinz wrote: > Good evening, people. > > More than a bug, it's an issue, a big one IMO. > > Even though information on the Remus project and its implementation is kind of > scarce on the internet and is usually outdated (the project could use some > love > on that side of things, though it seems that on the coding side, it's > still being > properly maintained), there's a huge problem in the current implementation: > its > storage depends on a custom patch developed for a very old version of DRBD. > > Currently, the wiki points that in order to use Remus you must use it > with a custom > version of DRBD, forked from 8.3.11 (and there's also a patch for > 8.3.9). Support > for these versions have been dropped for almost 3 years, and they are only > compatible with Linux kernels 3.0-3.4: most distros have already dropped these > kernels and deleted them from their repositories: even kernel.org plans to > drop > support for the 3.4 kernel in September this year. Building your own is an > unnecessary hassle. > > These problems make Remus practically unusable, despite being one of the > coolest features Xen has in my honest opinion. > > This issue has also been brought up at least once on the DRBD mailing list[1] > and until there's more cooperation between the Xen project and LINBIT to > develop a more robust Protocol D, they've refused to pull the patch into their > tree to be maintained. > > It's worth noting that the "official" patch (by rshiriam) is somewhat > simple[2][3]. > > A solution to this for the short term would be to port the patch to the > current > DRBD version (8.4.7-1) and in the long term, to collaborate with LINBIT so > the Xen project doesn't have to maintain their own downstream changes, and > we benefit from LINBIT's experience on realiable storage. > > The short term solution seems like a very quick one, since the original patch > is small-ish, and I've been trying to do it[4] but simply C isn't my strong > suit > and I don't know much of DRBD's source, even after doing a cursory reading > of it. > > I know this is an open source project and thus most developers are > volunteers, but > this kind of issue really is a show-stopper that keeps me (and presumably many > other people) from using the awesome feature that Remus is. > > [1]: http://lists.linbit.com/pipermail/drbd-user/2013-October/020370.html > [2]: > http://remusha.wdfiles.com/local--files/configuring-and-installing-remus/drbd-8.3.9-remus.patch > [3]: > https://github.com/macrosheep/remus-drbd/commit/2685b294f5b416d827bdf446a69c88ab04df50dd > [4]: https://github.com/superpatosainz/remus-drbd > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
|
Lists.xenproject.org is hosted with RackSpace, monitoring our |