[Gluster-devel] EHT / DHT

Anand Avati avati at gluster.org
Tue Nov 25 22:21:24 UTC 2014


On Tue Nov 25 2014 at 2:13:43 PM Jan H Holtzhausen <janh at holtztech.info>
wrote:

> Yes we have deduplication at the filesystem layer
>

As things stand, it is not possible to achieve what you are looking for
with DHT. By using regexes, you can influence the placement of files
relative to other filenames *only within the same directory* (thereby
making temp file followed by rename inexpensive, etc.)

What you are looking for requires a major change in DHT - using a single
hash layout for all directories and not having a directory-specific
component in the hash calculation.

Thanks,
Avati
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