On Thu, Mar 9, 2017 at 11:10 AM, Kevin Lemonnier <[email protected]> wrote:
> > I've seen the term sharding pop up on the list a number of times but I > > haven't found any documentation or explanation of what it is. Would > someone > > please enlighten me? > > It's a way to split the files you put on the volume. With a shard size of > 64 MB > for example, the biggest file on the volume will be 64 MB. It's transparent > when accessing the files though, you can still of course write your 2 TB > file > and access it as usual. > > It's usefull for things like healing (only the shard being headed is > locked, > and you have a lot less data to transfert) and for things like hosting a > single > huge file that would be bigger than one of your replicas. > > We use it for VM disks, as it decreases heal times a lot. > > Some more details on sharding can be found at [1]. Regards, Vijay [1] http://blog.gluster.org/2015/12/introducing-shard-translator/
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