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Jae,
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<div class="">To make sure deferred deletion is properly working: when you delete individual large volumes</div>
<div class="">with data in them, do you see that</div>
<div class="">- the volume is fully “deleted" within a few seconds, ie. not staying in ‘deleting’ for a long time?</div>
<div class="">- that the volume shows up in trash (with “rbd trash ls”)?</div>
<div class="">- the periodic task reports it is deleting volumes from the trash?</div>
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<div class="">Another option to look at is “backend_native_threads_pool_size": this will increase the number</div>
<div class="">of threads to work on deleting volumes. It is independent from deferred deletion, but can also</div>
<div class="">help with situations where Cinder has more work to do than it can cope with at the moment.</div>
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<div class="">Cheers,</div>
<div class=""> Arne</div>
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<blockquote type="cite" class="">
<div class="">On 11 Feb 2019, at 09:47, Jae Sang Lee <<a href="mailto:hyangii@gmail.com" class="">hyangii@gmail.com</a>> wrote:</div>
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<div dir="auto" class="">Yes, I added your code to pike release manually.
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<div dir="ltr" class="">2019년 2월 11일 (월) 오후 4:39에 Arne Wiebalck <<a href="mailto:Arne.Wiebalck@cern.ch" class="">Arne.Wiebalck@cern.ch</a>>님이 작성:<br class="">
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<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi Jae,<br class="">
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You back ported the deferred deletion patch to Pike?<br class="">
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Cheers,<br class="">
Arne<br class="">
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> On 11 Feb 2019, at 07:54, Jae Sang Lee <<a href="mailto:hyangii@gmail.com" target="_blank" rel="noreferrer" class="">hyangii@gmail.com</a>> wrote:<br class="">
> <br class="">
> Hello,<br class="">
> <br class="">
> I recently ran a volume deletion test with deferred deletion enabled on the pike release.<br class="">
> <br class="">
> We experienced a cinder-volume hung when we were deleting a large amount of the volume in which the data was actually written(I make 15GB file in every volumes), and we thought deferred deletion would solve it.<br class="">
> <br class="">
> However, while deleting 200 volumes, after 50 volumes, the cinder-volume downed as before. In my opinion, the trash_move api does not seem to work properly when removing multiple volumes, just like remove api.<br class="">
> <br class="">
> If these test results are my fault, please let me know the correct test method.<br class="">
> <br class="">
<br class="">
--<br class="">
Arne Wiebalck<br class="">
CERN IT<br class="">
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<div class="">--<br class="">
Arne Wiebalck<br class="">
CERN IT </div>
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