ScoutFS is a POSIX, scale out, open source GPL, in kernel, block file system designed specifically for archiving. Metadata is processed on all nodes or a sub set of nodes in a VSM2 cluster. There is no central metadata controller nor any single point of failure. ScoutFS introduces many outstanding new capabilities by radically increasing the number of POSIX files that can be reliably maintained in a single namespace.
Indexes are queryable from a built in interface.
The ScoutFS filesystem allows for near-instant queries to the filesystem.
ScoutFS vs XFS - notice how the time to find files is flat on ScoutFS, it doesn't grow with the number of files in the system.
If you're asking why we built a new filesystem instead of trying use an existing one, see this blog post.
Github site: https://github.com/versity/scoutfs-kmod-dev, patches or contributions welcome.
Need ScoutFS support?