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2321dfbdac
Since v4.6-rc3-29-g6192269444eb there has been a special readdir VFS method that can be called for the same directory multiple times in parallel, without any additional VFS locking. The VFS has provided a WRAP_DIR_ITER() macro to re-wrap the method with extra locking, in case the method wasn't safe for this. With el10, the old .readdir method is now gone, and we have no choice but to either use the wrapper, or just hook up our readdir() method to the .iterate_shared op. From what I can see, our implementation is safe to do this. Signed-off-by: Auke Kok <auke.kok@versity.com>
Introduction
scoutfs is a clustered in-kernel Linux filesystem designed to support large archival systems. It features additional interfaces and metadata so that archive agents can perform their maintenance workflows without walking all the files in the namespace. Its cluster support lets deployments add nodes to satisfy archival tier bandwidth targets.
The design goal is to reach file populations in the trillions, with the archival bandwidth to match, while remaining operational and responsive.
Highlights of the design and implementation include:
- Fully consistent POSIX semantics between nodes
- Atomic transactions to maintain consistent persistent structures
- Integrated archival metadata replaces syncing to external databases
- Dynamic seperation of resources lets nodes write in parallel
- 64bit throughout; no limits on file or directory sizes or counts
- Open GPLv2 implementation
Community Mailing List
Please join us on the open scoutfs-devel@scoutfs.org mailing list hosted on Google Groups