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<p>Yes, you are correct. On a sharded volume, the hot and cold would
be based on sharded chunks.</p>
<p>I'm stressing the point which Krutika mentioned in her mail that
we haven't tested the use case in depth.</p>
<p><br>
</p>
Regards<br>
Rafi KC<br>
<br>
<div class="moz-cite-prefix">On 09/06/2016 06:38 PM, Krutika
Dhananjay wrote:<br>
</div>
<blockquote
cite="mid:CAPhYV8OFDhSm2-1RmdZifhoTDOzMEYQrQv9j2ZxrdReDRX0BXg@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div>
<div>Theoretically whatever you said is correct (at least
from shard's perspective).<br>
Adding Rafi who's worked on tiering to know if he thinks
otherwise.<br>
<br>
</div>
It must be mentioned that sharding + tiering hasn't been
tested as such till now by us at least.<br>
<br>
</div>
Did you try it? If so, what was your experience?<br>
<br>
</div>
-Krutika <br>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Tue, Sep 6, 2016 at 5:59 PM, Gandalf
Corvotempesta <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:gandalf.corvotempesta@gmail.com"
target="_blank">gandalf.corvotempesta@gmail.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<p dir="ltr">Anybody?</p>
<div class="HOEnZb">
<div class="h5">
<div class="gmail_extra"><br>
<div class="gmail_quote">Il 05 set 2016 22:19,
"Gandalf Corvotempesta" <<a
moz-do-not-send="true"
href="mailto:gandalf.corvotempesta@gmail.com"
target="_blank">gandalf.corvotempesta@gmail.<wbr>com</a>>
ha scritto:<br type="attribution">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Is
tiering with sharding usefull with VM workload?<br>
Let's assume a storage with tiering and sharding
enabled, used for<br>
hosting VM images.<br>
Each shard is subject to tiering, thus the most
frequent part of the<br>
VM would be cached on the SSD, allowing better
performance.<br>
<br>
Is this correct?<br>
<br>
To put it simple, very simple, let's assume a
webserver VM, with the<br>
following directory structure:<br>
<br>
/home/user1/public_html<br>
/home/user2/public_html<br>
<br>
both are stored on 2 different shards (i'm
semplyfing).<br>
/home/user1/public_html has much more visits than
user2.<br>
<br>
Would that shard cached on hot tier allowing
faster access by the webserver?<br>
</blockquote>
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</blockquote>
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<br>
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</blockquote>
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