On 2012-09-09, at 11:34 PM, 李希 wrote: > We are trying to figure out whether it is possible to build a client-side > cache system over Lustre in order to speed up the perforamance of our > applications. In this system, we need to protect cached files and directories > from being changed by other clients. The per-file group lock may not be > enough since we need to protect the whole namespace including metadatas. I > think sub-tree locking may help a lot, though it is not designed for this > purpose. Any way, may I ask what time can we expect sub-tree lock to be > released? Is there any prototypical source codes?
There was no development work done for sub-tree locking for Lustre. This was only a proposed feature, but it never started development. Cheers, Andreas -- Andreas Dilger Whamcloud, Inc. Principal Lustre Engineer http://www.whamcloud.com/ _______________________________________________ Lustre-discuss mailing list [email protected] http://lists.lustre.org/mailman/listinfo/lustre-discuss
