[openstack-dev] [cinder] Support share backup to different projects?
Jay S Bryant
jungleboyj at gmail.com
Tue Mar 20 20:12:56 UTC 2018
On 3/19/2018 10:55 PM, TommyLike Hu wrote:
> Now Cinder can transfer volume (with or without snapshots) to
> different projects, and this make it possbile to transfer data across
> tenant via volume or image. Recently we had a conversation with our
> customer from Germany, they mentioned they are more pleased if we can
> support transfer data accross tenant via backup not image or volume,
> and these below are some of their concerns:
> 1. There is a use case that they would like to deploy their
> develop/test/product systems in the same region but within different
> tenants, so they have the requirment to share/transfer data across
> 2. Users are more willing to use backups to secure/store their volume
> data since backup feature is more advanced in product openstack
> version (incremental backups/periodic backups/etc.).
> 3. Volume transfer is not a valid option as it's in AZ and it's a
> complicated process if we would like to share the data to multiple
> projects (keep copy in all the tenants).
> 4. Most of the users would like to use image for bootable volume only
> and share volume data via image means the users have to maintain lots
> of image copies when volume backup changed as well as the whole system
> needs to differentiate bootable images and none bootable images, most
> important, we can not restore volume data via image now.
> 5. The easiest way for this seems to support sharing backup to
> different projects, the owner project have the full authority while
> shared projects only can view/read the backups.
> 6. AWS has the similar concept, share snapshot. We can share it by
> modify the snapshot's create volume permissions .
> Looking forward to any like or dislike or suggestion on this idea
> accroding to my feature proposal experience:)
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As discussed at the PTG, this still sounds like improper usage of
Backup. Happy to hear input from others but I am having trouble getting
my head around it.
The idea of sharing a snapshot, as you mention AWS supports sounds like
it could be a more sensible approach. Why are you not proposing that?
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