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ee9e8c3e1a
The _READ_XATTR_TOTALS ioctl had manual code for merging the .totl. total and value while reading fs items. We're going to want to do this in another reader so let's put these in their own funcions that clearly isolate the logic of merging the fs items into a coherent result. We can get rid of some of the totl_read_ counters that tracked which items we were merging. They weren't adding much value and conflated the reading ioctl interface with the merging logic. 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
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