Hi all, Currently, our team is trying to add directory/project quota support to Lustre file system. Since ext4 is the basis of Lustre, as a part of the project, we are also attempting to add directory/project quota to ext4. We've made some progress, and I think it might be better to share our work in the community before going further. There are already some patches from Dmitry Monakhov, so we started from his patches. We had back-ported the patches to Linux-2.6.32 (RHEL 6.x) kernel and confirmed that his patches works well generally, though, as already discussed in this mail list, there might be some improvements we will have to do, including eliminating the differences with XFS project quotas. Another thing we did is adding subtree support to quota-tools. And with these changes, we tested subtree kernel patches. Sharing the same userspace quota API with XFS might be a good idea, but I think it will be strange to users if quota-tools doesn't have native support for directory/project quota support. So keeping quota-tools updated seems another necessary part of the project. We are currently working on adding support to e2fsprogs. No matter what features directory/project quota will have, e2fsprogs will have to be updated anyway. There might be some different opinions about how to design and implement this new feature in detail. But it is true for sure that we like and want this new feature. We hope our effort can do some help more or less, and we are willing to cooperate with anybody who are interested in this probject. It will be really helpful too if you can give us some advices. Thanks, Li Xi -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
