[Bug 1983716] Re: Improve performances of glance when using rbd backend

[Corey Bryant]

Thanks for opening this Cedric. I can pick up this patch in a new
version of python-glance-store for focal (ussuri). Please can you do the
testing on this once it is in focal-proposed?

** Also affects: python-glance-store (Ubuntu Focal)
   Importance: Undecided
       Status: New

** Changed in: python-glance-store (Ubuntu Focal)
       Status: New => Triaged

** Changed in: python-glance-store (Ubuntu Focal)
   Importance: Undecided => High

** Changed in: python-glance-store (Ubuntu)
       Status: New => Invalid

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Title:
  Improve performances of glance when using rbd backend

Status in python-glance-store package in Ubuntu:
  Invalid
Status in python-glance-store source package in Focal:
  Triaged

Bug description:
  Hello,

  In order to significantly improve performances of images upload on rbd
  store, it would be great if commit [1] can be backported from branch
  2.0.1 to focal package (actually 2.0.0-0ubuntu3).

  Except for image upload, the real use case here is to speedup
  instances snapshots, benchmarks between 2.0.0 and 2.0.1 reports a
  performance gain of ~30%: it drops from 230 to 165 seconds with an
  image of 10GB (metrics shows up in nova-compute.log on the host where
  the snapshot occurs).

  
  [1] commit ca0c58b52756058b6d51bf6a47aeac3d525c1e16 (HEAD -> stable/ussuri, tag: ussuri-em, tag: 2.0.1, origin/stable/ussuri)

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