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6a99ca9ede
The existing stat_more and setattr_more interfaces aren't extensible. This solves that problem by adding attribute interfaces which specify the specific fields to work with. We're about to add a few more inode fields and it makes sense to add them to this extensible structure rather than adding more ioctls or relatively clumsy xattrs. This is modeled loosely on the upstream kernel's statx support. The ioctl entry points call core functions so that we can also implement the existing stat_more and setattr_more interfaces in terms of these new attr_x functions. Signed-off-by: Zach Brown <zab@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