mirror of
https://github.com/versity/scoutfs.git
synced 2026-01-06 04:04:59 +00:00
a4d25d9b55
The data_wait_err ioctl currently requires the correct data_version for the inode to be passed in, or else the ioctl returns -ESTALE. But the ioctl itself is just a passthrough mechanism for notifying data waiters, which doesn't involve the data_version at all. Instead, we can just drop checking the value. The field remains in the headers, but we've marked it as being ignored from now on. The reason for the change is documented in the header file as well. This all is a lot simpler than having to modify/rev the data_waiters interface to support passing back the data_version, because there isn't any space left to easily do this, and then userspace would just pass it back to the data_wait_err ioctl. 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