[Gluster-users] Tiering and sharding for VM workload

Krutika Dhananjay kdhananj at redhat.com
Tue Sep 6 13:08:21 UTC 2016

Theoretically whatever you said is correct (at least from shard's
Adding Rafi who's worked on tiering to know if he thinks otherwise.

It must be mentioned that sharding + tiering hasn't been tested as such
till now by us at least.

Did you try it? If so, what was your experience?


On Tue, Sep 6, 2016 at 5:59 PM, Gandalf Corvotempesta <
gandalf.corvotempesta at gmail.com> wrote:

> Anybody?
> Il 05 set 2016 22:19, "Gandalf Corvotempesta" <
> gandalf.corvotempesta at gmail.com> ha scritto:
>> Is tiering with sharding usefull with VM workload?
>> Let's assume a storage with tiering and sharding enabled, used for
>> hosting VM images.
>> Each shard is subject to tiering, thus the most frequent part of the
>> VM would be cached on the SSD, allowing better performance.
>> Is this correct?
>> To put it simple, very simple, let's assume a webserver VM, with the
>> following directory structure:
>> /home/user1/public_html
>> /home/user2/public_html
>> both are stored on 2 different shards (i'm semplyfing).
>> /home/user1/public_html has much more visits than user2.
>> Would that shard cached on hot tier allowing faster access by the
>> webserver?
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