mirror of
https://github.com/versity/scoutfs.git
synced 2026-07-20 06:52:20 +00:00
Auke Kok
c9d442c406
scoutfs_block_dirty_ref() only sets *ref_blkno on the path that allocates a new cow block. The early return paths leave it untouched, so a caller that reads it back gets whatever value was on the stack. This is harmless with the current callers. dirty_alloc_blocks() bails out before calling here when the blocks are already dirty, so the early return on an already-dirty block is never reached, and the error paths return a negative value that callers check before using ref_blkno. 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
Please join us on the open scoutfs-devel@scoutfs.org mailing list hosted on Google Groups