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Yes we have files whose sizes sometimes exceeds brick size . <br>
This case also hits when we have partially filled bricks and then we
want to create a single file using the space available in all the
bricks, even though that file size is lesser than a bricksize.<br>
<br>
Example:<br>
<br>
Say we have three bricks of 10 MB each.<br>
Each brick is filled with one 5.1 MB file each, initially. <br>
Now the left over space is 4.9 MB in each brick. So total space is
4.9 MB * 3 = 14.7 MB. We cannot now create a file of atleast 5 MB.<br>
<br>
Thanks<br>
Subrata<br>
<br>
<br>
<div class="moz-cite-prefix">On 07/23/2014 10:38 AM, Joe Julian
wrote:<br>
</div>
<blockquote
cite="mid:b103629f-638d-45d7-964c-ca9a06d461d6@email.android.com"
type="cite">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
To you have single files that exceed brick sizes which grow and
shrink?<br>
<br>
<div class="gmail_quote">On July 22, 2014 10:02:16 PM PDT, Subrata
Ghosh <a class="moz-txt-link-rfc2396E" href="mailto:subrata.ghosh@ericsson.com"><subrata.ghosh@ericsson.com></a> wrote:
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt
0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left: 1ex;"> Can you please help for this. It is
really becoming critical for us.<br>
<br>
Regards,<br>
Subrata<br>
<br>
<br>
<div class="moz-cite-prefix">On 07/22/2014 04:45 PM, Subrata
Ghosh wrote:<br>
</div>
<blockquote cite="mid:53CE47BD.4090004@ericsson.com"
type="cite"> Hi ,<br>
<br>
We are using GlusterFS in our product for DFS. We have
found an issue in using "striping" while experimenting
with Striped Volumes in our DFS infrastructure. We thought
of enable striping to support "Max Files Size" when a file
dynamically grows/shrink over time inside a brick. We need
to add more storage dynamically to handle this situation and
striped the file across bricks to fit it properly in that
striped volume .<br>
<br>
<b>Question</b>: is Does Gluster supports "dynamic
configuration of Stripe Count" (increment / decrement
stripe count) of Striping currently ?<br>
<br>
We tried with following two basic experiments :<br>
<br>
1. Create a volume with two bricks with stripe count 2 with
no replica ( to simplify ).<br>
<br>
2. Add one more brick in that volume and increase stripe
count by one ( the stripe count becomes 3 now) .<br>
- Seems it works fine and files are being striped
across 3 bricks as per specified chunk-size .<br>
<br>
3. However faced issues while removing a brick from the
volume and decrement stripe count by one again ( so the
stripe count becomes 2 again)<br>
=> Gluster is not allowing to reduce the stripe
count in this scenario.<br>
<br>
Could you please help us by clarifying this. <br>
<br>
Thanks for your help <br>
<br>
Regards, <br>
Subrata Ghosh <br>
(Ericsson R&D) </blockquote>
<br>
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