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<div class="moz-cite-prefix">On 11/18/2014 04:14 PM, Lindsay
Mathieson wrote:<br>
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<blockquote cite="mid:1648831.TBTquAapmk@lindsay-office" type="cite">
<pre wrap="">On Tue, 18 Nov 2014 02:36:19 PM Pranith Kumar Karampuri wrote:
</pre>
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<pre wrap="">On 11/18/2014 01:17 PM, Lindsay Mathieson wrote:
</pre>
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<pre wrap="">On 18 November 2014 17:40, Pranith Kumar Karampuri <a class="moz-txt-link-rfc2396E" href="mailto:pkarampu@redhat.com"><pkarampu@redhat.com></a>
</pre>
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</blockquote>
<pre wrap="">wrote:
</pre>
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<pre wrap="">
However given the files are tens of GB in size, won't it thrash my
network?
</pre>
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<pre wrap="">
Yes you are right. I wonder why thrashing of the network is never
reported till now.
</pre>
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<pre wrap="">
Not sure if you are being sarcastic or not :) But from what I've observed,
sync operations seem to self throttle, I've not seen them use more than 50% of
bandwidth, and given most setups have a dedicated network for the servers
maybe they just don't notice if it takes a while?</pre>
</blockquote>
No, I was not being sarcastic :-). I am genuinely wondering why it
is not reported till now. May be Joe will have more inputs there,
that is the reason I CCed him.<br>
<blockquote cite="mid:1648831.TBTquAapmk@lindsay-office" type="cite">
<pre wrap="">
</pre>
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<pre wrap="">I still need to think about how best to solve this problem.
</pre>
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<pre wrap="">
Setup a array of queues for self healing, sorted by size maybe?
</pre>
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<pre wrap="">
Let me tell you a bit more about this issue:
there are two processes which heal the VM images:
1) self-heal-daemon. 2) Mount process.
Self-heal daemon heals one VM image at a time. But mount process
triggers self-heals for all the opened files(VM image is nothing but an
opened file from filesystem's perspective) when a brick goes down and
comes backup.
</pre>
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<pre wrap="">
Thanks, interesting to know.
</pre>
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<pre wrap="">So we need to come up with a scheme to throttle self-heals
on the mount point to prevent this issue. I will update you as soon as I
come up with a fix. This should not be hard to do. Need some time to
choose the best approach. Thanks a lot for bringing up this issue.
</pre>
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<pre wrap="">
Thanks you for looking at it!
Cheers,
</pre>
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