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daea8d5bc1
An unfinalized log_trees entry whose rid is not in mounted_clients is an orphan left behind by incomplete reclaim. Previously this permanently blocked log merges because the finalize loop treated it as an active client that would never commit. Call reclaim_open_log_tree for orphaned rids before starting a log merge. Once reclaimed, the existing merge and freeing paths include them normally. Also skip orphans in get_stable_trans_seq so their open transaction doesn't artificially lower the stable sequence. 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
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