[Gluster-devel] bit rot support for glusterfs

[Venky Shankar]

> 1. Depend on change-log to recompute checksum. This eliminates
> periodic crawl of brick/volume to update the checksum.
>

Consumption would be very much similar to how Geo-replication makes use of
journals, i.e. notification after a specified time interval. If you need
somewhat realtime notifications, that can be worked upon. For already
existing data on a volume you could fallback to a FS crawl and use
changelog thereafter.

FWIW, an history API for changelog consumption (from bricks) would be of
much use here (given a [start-time, end-time], fetch all changelogs given
that change-logging was _always_ enabled in that time duration, else resort
to FS crawl).

    Venky
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