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11f624926b
We check superblock magic, crc, flags. data device superblock is checked but a little less thorough. We check whether the device is still mounted, since that would make checking invalid to begin with. Quorum blocks are validated to have sane contents. We add a global problem counter so we can trivially measure and report whether any problem was found at all, instead of iterating over all the problems and checking each individual count. We pick the standard exit code values from `fsck` and mirror their intentional behavior. This results in `fsck.scoutfs` can now be trivially created by making it a wrapper around `scoutfs check`. Signed-off-by: Auke Kok <auke.kok@versity.com> Signed-off-by: Hunter Shaffer <hunter.shaffer@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