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bf56585559
The expected case is when the last xattr with a totl key is removed that the count and value both reach zero. In case of a mismatch or corrupted value, we have several different failure modes: - count zero, value non-zero - value zero, count non-zero - both non-zero The first case is the easiest to resolve, which is what this patch does - it drops it and prints an error. The other cases are more difficult and need a manual method to erase the stale key, and one would have to scan the entire namespace to make sure that the xattrs are indeed all removed. 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
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