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Auke Kok
d929b06292
scoutfs_rename2 was a thin shim that validated flags and forwarded to scoutfs_rename_common. It existed because the old el7 RHEL_IOPS_WRAPPER path used a non-flag-taking .rename op alongside .rename2; with that path gone there is only one rename method, and the wrapper has no purpose. Move the RENAME_NOREPLACE flag validation into scoutfs_rename_common and point the directory inode_operations .rename slot at it directly. The symlink inode_operations already used scoutfs_rename_common, so this also makes symlink rename consistently reject unknown flags instead of silently accepting them. 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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